Answer:
The density of warm air is less in comparison to cold air.
Explanation:
Warm air rises up because when heat is provided, air expands. When the air expands, it becomes less dense than the air around it. The less dense warm air then floats above the denser cold air much like oil floats on water.
:)
Explain the comparative uses of the USDA Hardiness Zones and the Koppen-Geiger Scale.
The USDA Hardiness Zones and the Koppen-Geiger Scale are two different systems that are used to classify and compare the climates of different regions.
What are USDA Hardiness Zones and Koppen-Geiger Scale?
The USDA Hardiness Zones is a system used to classify the minimum temperatures that a specific type of plant can survive in a particular area. The zones are based on the average annual minimum temperature of a region, and are divided into 11 zones, from zone 1 (the coldest) to zone 11 (the warmest). This system is commonly used by horticulturists, gardeners, and farmers to determine which types of plants can be grown in a specific location.
The Koppen-Geiger Climate Classification system, also known as the Koppen climate classification, is a widely used system for classifying the climates of the world. It was developed by the German climatologist Wladimir Köppen in the late 1800s and was later modified by his student Rudolf Geiger.
The system is based on the temperature and precipitation patterns of a region, and is divided into five main climate groups: A (tropical), B (dry), C (temperate), D (continental), and E (polar). This system is commonly used by meteorologists, climatologists, and geographers to study and compare the climates of different regions.
In summary, USDA Hardiness Zones are used to classify the minimum temperatures that a specific type of plant can survive in a particular area, while the Koppen-Geiger Climate Classification system is used to classify the climates of different regions based on temperature and precipitation patterns.
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consider the critical experiment described on page 22 of your textbook. what would the result of that experiment have been if the change you described in your answer to 3a was a developmental change; and what would the result have been if the change was an evolutionary change? ok, then, what kind of change was it? explain.
The outcome of the crucial experiment would have shown that the newborn chicks continued to peck at the red object, suggesting that the preference for the red object is a learned habit that develops during the chick's early life. If the change indicated in question 3a was a developmental change.
It is most likely that the change mentioned in question 3a is a developmental change based on the experiment mentioned in the textbook. The experiment specifically states that the baby chicks were exposed to red and green objects before pecking, indicating that the preference for the red object is a learned behavior rather than an innate, evolutionary trait.
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scan section 1 of the chapter and make a list of three general ways in which cells use energy
Answer:
Chemical, digestion mechanical, thinking
A mutation occurs in which the mRNA strand synthesized from the nuclear DNA is translated into a protein. What is the likely cause of mutation?
A. RNA processing did not occur.
B. A point mutation caused a frameshift.
C. The mRNA did not move into the cytoplasm.
D. Multiple ribosomes attached to the mRNA during translation.
Therefore, once it reaches the mutation, the ribosome will read the mRNA sequence differently. As a result, the developing polypeptide chain may produce amino acids that are in a completely different sequence.
Where do mutations occur?Somatic and germ-line mutations are the two basic classifications of mutations, respectively, according to where they take place. Cells incapable of reproduction experience somatic mutations. The ability of genetically normal body cells to adjust for the mutant cells means that many types of somatic mutations have no evident impact on an organism. Other mutations, however, can have a significant impact on an organism's existence and ability to function. For instance, numerous cancer types are characterized by somatic mutations that alter cell division, particularly those that enable uncontrolled cell division.Gametes or the cells that will one day create gametes can develop germ-line mutations. Germ-line mutations are transmitted to an organism's offspring, in contrast to somatic mutations.The mutation will therefore be present in all of an organism's cells in subsequent generations (both somatic and germ-line).To Learn more About mutation Refer To:
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In certain species of horses, a roan coat color (mixed red and white hairs) occurs in the heterozygous (Rr) offspring of red (RR) and white (rr)
homozygotes. Which type type of inheritance does this example represent?
A. Co-Dominance
B. Incomplete Dominance
C. Polygenetic inheritance
D. Segregation
4
Answer:
Option B is correct that is Incomplete dominance.
Incomplete dominance is a type of gene interaction in which both alleles of the same gene at the same locus are partially expressed, culminating in an intermediate or distinct phenotype. It is often referred to as partial dominance.
Explanation:
Co Dominance
1. Two parent phenotypes co-express in their child.
2. Neither allele is dominant or recessive over the other.
3. The creation of a new phenotype will not emerge from a hybrid.
Individuals of blood group ABO, for example, have Codominance. A and B are dominant in relation to O, but not in relation to each other.
Incomplete Dominance
1. Two parents combine to produce a new phenotype for their offspring.
2. One allele does not totally outnumber the other.
2. Every hybrid will produce a new phenotype.
Snapdragon, for example, Antirrhinum majus (pink flowers are the resultant when crossed between a homozygous red flower and a homozygous white flower)
"Polygenic inheritance is a sort of quantitative heredity in which numerous separate genes have a similar or additive influence on a single quantitative feature."
Polygenic inheritance can also be referred to as multiple gene inheritance or multiple factor inheritance.
•A polygene is a gene that, in conjunction with other genes, has little influence on phenotype.
•Because the effect of a single gene is so modest, it is difficult to determine.
The law of segregation is the second law of heredity. This law describes how a pair of alleles segregate from each other during meiosis cell division (gamete production), such that each gamete has just one allele.
Both alleles are expressed in the F2 generation of a monohybrid cross with no mixing. As a result, the law of segregation is predicated on the fact that each gamete only carries one allele.
This theory is predicated on four basic concepts:
•A gene can exist in more than one allele form.
•When meiosis produces gametes, the allelic pairings split, leaving each gamete with only one allele.
•Each characteristic has two alleles that each creature inherits.
•A pair's two alleles vary in that one is dominant and the other is recessive.
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The antenna of a shrimp carry sensory organs the muscles of the legs are organs of move ment. The shrimp exhibits a fluht reaction upon facing a danger use this pic to interpret this reaction
The antennae of a shrimp carry sensory organs that allow the shrimp to detect changes in its environment, such as the presence of predators or other potential dangers.
The shrimp can swim and move around in its environment because to the muscles in its legs, which are its organs of movement.
A shrimp's "flight" reaction, a type of survival mechanism that enables fast escape from damage, is exhibited in the presence of danger. The shrimp uses its powerful leg muscles to swim quickly away from the imagined danger in this reaction. The sensory organ-equipped antennae of the shrimp pick up on the threat and send a message to the brain, which sets off the flight response. For the shrimp to survive in the wild, it is essential that it be able to recognize danger rapidly and react with a flight reflex.
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When a shrimp senses danger, it exhibits a ‘flight reaction’, which is a process of quickly escaping from danger. The antennae of the shrimp are sensory organs that detect changes in the environment and alert the shrimp to the presence of danger.
The muscles of the shrimp’s legs then contract, allowing the shrimp to swim away quickly and escape the threat.
This flight reaction is a survival instinct that helps shrimp to evade predators. It is an example of an innate behavior, meaning that the shrimp does not need to learn it. The shrimp is born with the reflex to swim away when it senses danger, and this instinct can help it to survive in its aquatic environment.
Additionally, the shrimp’s antennae and legs are both essential for the flight reaction to occur, so the shrimp must rely on both parts of its body to react quickly and escape.
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Any type of data that may either agree or disagree with a prediction so that it may either support or disprove a hypothesis is known as
Evidence is any sort of data that may support or refute a hypothesis and may either agree or disagree with a prediction.
What is hypothesis?Hypothesis is a fact whose exsistence need to be proved.
Every hypothesis be it scientific or for a social cause needs to be proved with documents which we call evidences, these might be individuals, papers, circumstances, methodology etc.
An explanation for a phenomenon is put forth as a hypothesis. According to the scientific method, a hypothesis must be testable in order to qualify as a scientific hypothesis.
Usually, scientists build their ideas on earlier discoveries that raise questions about the reliability of the corpus of current information.
A methodology is the step-by-step process for conducting a scientific experiment.
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Rising air creates what type of pressure system at the surface?
precipitation
diverging
converging
low
high
Rising air creates a low pressure system at the surface.
A low pressure system is an area where the atmospheric pressure is lower than the surrounding areas. Rising air is a key factor in the formation of low pressure systems because as air rises, it cools and expands, which decreases its density and creates an area of lower pressure. Low pressure systems are often associated with clouds and precipitation because the rising air can lead to the formation of clouds and storms as the air cools and moisture condenses.
High pressure systems are characterized by sinking air and are associated with clear and stable weather.
Converging refers to the movement of air towards a certain point and diverging refers to the movement of air away from a certain point. They are not related to pressure systems.
Precipitation is the release of water droplets or ice crystals from the atmosphere that falls to the surface. It can be associated with low-pressure systems but it is not the same as a low-pressure system.
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Rising air creates a low-pressure system at the surface. When air rises, it expands and cools, leading to a decrease in pressure at the surface. Here option D is the correct answer.
This decrease in pressure creates an area of low pressure at the surface, also known as a diverging pressure system. Diverging air at the surface creates an area of decreased air pressure which causes air to move away from the center of the low-pressure system.
This creates an area of reduced cloudiness and precipitation. This is an important aspect of the global atmospheric circulation, which drives the winds and weather patterns around the world, and can be influenced by other factors such as temperature, humidity, and topography.
Complete question:
Rising air creates what type of pressure system at the surface?
A - precipitation
B - diverging
C - converging
D - low
E - high
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what distinguishes a linear metabolic pathway from a cyclic metabolic pathway?
A sequence of metabolic reactions leads to the end product in a linear metabolic route. On the other hand, a cyclic metabolic pathway has a cycle where the initial reactant is created at the conclusion.
Linear Metabolic routes entail the transformation of one chemical into another compound by passing through several intermediates. An illustration would be the process of glycolysis, which turns glucose into pyruvate.
A sequence of metabolic reactions leads to the end product in a linear metabolic route. On the other hand, a cyclic metabolic pathway has a cycle where the initial reactant is created at the conclusion.
Catabolic pathways, which break down compounds, and anabolic pathways, which create substances from raw materials, are the two different types of metabolic processes. In catabolic processes, energy is released, whereas, in anabolic pathways, energy is used up.
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To have motion, a body must experience a change in what? (A) position (B) velocity (C) acceleration (D) momentum.
Since we know from the description that it's the rate of change of velocity if a body is accelerated, its haste must change as well.
Velocity and speed describe how snappily or sluggishly an object is moving. We constantly encounter circumstances when we must determine which of two or further moving objects is going faster.However, it's simple to determine which is hastily, If the two are travelling on the same route in the same direction. It's challenging to identify who's moving the fastest when their stir is in the other direction. The conception of velocity is useful in the circumstances like these for analysis.
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A body's haste must change if it is accelerated, as we infer from the explanation that the rate of change in velocity is what changes.
Speed and velocity are terms used to indicate how quickly or slowly an object is moving. We frequently find ourselves in situations where we must choose which of two or more moving objects is travelling quicker. If the two are moving in the same direction and on the same path, it is easy to tell which is moving quickly. When someone is stirring in the opposite direction from you, it can be difficult to tell who is going the fastest. In situations like this, the concept of velocity is helpful for analysis.
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all of these are environmental problems associated with pesticide use in the u.s. except a. human health concerns. c. pesticide persistence. b. pesticide resistance. d. the ongoing application of ddt.
With the exception of (d), which continues to be applied ddt, all of these are environmental issues related to pesticide use in the United States.
What are persistent pesticides?Organochlorine pesticides, which make up the majority of persistent pesticides, are so-called because of their environmental stability and resistance to deterioration. It is possible to assess persistence by grouping pesticide half-lives into three categories. These fall into three categories: low (16 days or less) moderate (16 to 59 days), and high (over 60 days). Because they are significantly less likely to linger in the environment, pesticides with shorter half-lives tend to accumulate less.
Are pesticides persistent pollutants?Organochlorine pesticides like DDT, industrial chemicals, polychlorinated biphenyls (PCB), as well as unintended byproducts of numerous industrial processes, including polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF), often known as dioxins, are the most frequently encountered POPs.
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The analysis of the internal structure of individual cells is called
Cytology. The premise that a cell is the basic building block of life underlies the study of cell biology, which focuses on the structure and operation of individual cells.
Biology's field of anatomy studies the structure of organisms and their constituent components. The term "anatomy" comes from the Ancient Greek for "dissection". The structure of living organisms is examined in the field of anatomy, which belongs to natural science. The cytoplasm, which surrounds the nucleus in cells, is composed of the cytosol, a jelly-like fluid. Cytoskeleton. A web of lengthy fibres called the cytoskeleton serves as the structural framework of the cell.
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_____solutions have the same concentration of water and solutes inside
and outside cells allowing cells to retain their normal shape.
what is the substrate molecule that initiates this metabolic pathway? b. what is the inhibitor molecule c. what type of inhibitor is it? d. when does it have the most significant regulatory effect? e. what is this type of metabolic control called?
The substrate molecule that starts this metabolic pathway is threonine. The molecule of inhibition is isoleucine. It comes under non-competitive inhibition
When does it have significant regulatory effect?when it connects to an allosteric site, it has the most substantial regulatory impact. The non-active site of an enzyme is in which the allosteric inhibitor interacts. The active site's architecture is altered to prevent the enzyme from binding to its substrate.
What is the name of this kind of metabolic regulation?Through feedback inhibition, isoleucine inhibits threonine deaminase from working. Noncompetitive inhibitors are used in a common biochemical process called feedback inhibition to modulate some enzyme activity. In this process, the finished item blocks the enzyme that catalyses the initial reaction in a chain of reactions.
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how long after exposure to strep do symptoms appear?
An individual exposed to group A strep germs typically takes two to five days to become unwell with strep throat.
Till they have taken antibiotics for at least 24 hours, refrain from coming into contact with anyone who has strep throat. Don't exchange personal goods like toothbrushes either. When you cough or sneeze while suffering with strep, be cautious to cover your mouth. People with strep throat might be contagious for up to a few days before they begin to exhibit symptoms, which is unfortunate given how quickly streptococcal germs spread. This implies that a person who is not yet ill can spread the illness.
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After contact to the bacterium, symptoms of strep throat often start to manifest 2 to 5 days later. One to three days following contact to the germs, symptoms of strep throat usually start to manifest.
However, in rare circumstances, symptoms may not start to manifest for up to 5 days. Sore throat, fever, enlarged lymph nodes in the neck, and red, swollen tonsils are the most typical signs of strep throat. Headache, nauseousness, discomfort in the abdomen, and vomiting are possible additional symptoms. Scarlet fever, which can also cause a rash in certain people, is known. It's crucial to keep in mind that not everyone who has strep throat will experience all of these symptoms, and some people may even show no symptoms at all. To avoid problems, it's crucial to get checked out by a doctor if you think you might have strep throat.
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how is cohesin tagged differently in mitosis and meiosis to allow for proper segregation of chromatids?
In the process of mitosis, the cohesion of sister chromatids at the centromere breaks down at the conclusion of metaphase, while during meiosis, the chromatids continue to be united at the centromere throughout the first anaphase of the process
In the process of mitosis, the cohesion of sister chromatids at the centromere breaks down at the conclusion of metaphase. This gives the daughter chromosomes the ability to separate and travel toward the two poles of the spindle. In contrast, during meiosis, the chromatids continue to be united at the centromere throughout the first anaphase of the process.
During the first stage of meiosis, a protease known as separase cleaves cohesin, which is found on the chromosome arms. This opens the door for the separation of homologous chromosomes.
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* 9. anteaters evolved long claws from ancestors that had shorter claws. think about the first anteater to have claws as long as modern anteaters. why did this individual have such long claws?
Because the anteater need large claws to consume, a mutation altered its DNA. Long claws were evolved because the anteater needed them to dig out ants.
The anteater removed numerous anthills, and these actions harmed its claws: The anteater was fortunate that a genetic mistake resulted in long claws.
The four mammal species of the suborder Vermilingua which means "worm tongue" commonly go by the label "anteater." These animals are notorious for consuming termites and ants.
The many species are known by different names in English and other languages. They belong to the order Pilosa, which also includes sloths. Aardvarks, numbats, echidnas, pangolins, and some members of the Oecobiidae are also frequently referred to as "anteaters," despite not being closely related to them.
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How do seeds make angiosperms and gymnosperms more fit to reproduce on land than ferns and mosses?
Ferns and mosses are both seedless plants, while conifers are gymnosperms, which produce seeds.
What makes gymnosperm different from moss and ferns?The seeds make angiosperms and gymnosperms suitable to reproduce on land by Ferns making their seeds either bear interior plants or on the scales of cones. They make it so the seeds have to copy on land because the seed's pollen has to go to sure gymnosperms' places such as in a flower or on cones.
Gymnosperms require wind to breed but ferns need water for the sperm to swim through. Gymnosperms have wood lignin and cork cambium and are more constitutional rigid and thick because of layers of dead lesser vascular tissue. Ferns do not have wood or bark.
So we can conclude that Gymnosperms on the other hand have seeds, while they are not put inside an ovary.
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cells found in the nervous system that insulate, nourish and direct the growth of neurons as well as remove dead neurons and waste products are known as
The glial cells (glia) are the cells found in the nervous system that insulates, nourishes, and direct the growth of neurons, removing dead neurons and waste products.
These cells, referred to as the glue of the nervous system, are a part of the peripheral and central nervous systems. In the peripheral nervous system, the Schwann and satellite glial cells are found. In the central nervous system, there are five types of glial cells - microglia, radial glia, astrocytes, oligodendrocytes, and ependymal cells.
The glial cells provide and maintain a suitable environment for the neurons by giving them chemical and physical support. It also maintains homeostasis.
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Glial cells or the glia are the cells which are found in the nervous system and perform the function of insulating, nourishing and directing the growth of neurons as well as removing dead neurons and waste products.
Glial cells are basically a type of cell which provides physical as well as chemical support to the neurons and maintain their environment. They are located in the central nervous system or the CNS and peripheral nervous system.
Glial cells are also sometimes referred to as neuroglia or just glia. There are five basic types of glial cells namely radial glia, astrocytes, microglia, oligodendrocytes, and ependymal cells. They direct the growth of neurons and even remove the dead neurons as well as the waste product.
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scientists have reached a key milestone in learning how to reverse aging. true or false
scientists have reached a key milestone in learning how to reverse aging is false.
Reversing aging in mammals and humans is still a challenging and active area of research, despite substantial advances in our understanding of the mechanisms behind aging and the development of therapies that can lengthen longevity in some organisms.
While numerous hypotheses and treatments, including calorie restriction, exercise, and some medications, have been put out to slow or reverse aging, none have been demonstrated to completely reverse the aging process in mammals. About the root causes of aging and how to effectively combat them, there is still much to learn. Aging help to keep the population in check thus acting as natural population control.
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It is false that scientists have reached a critical milestone in learning how to reverse ageing.
Despite significant advances in our understanding of the mechanisms underlying ageing and the development of therapies that can extend longevity in some organisms, reversing ageing in mammals and humans remains a challenging and active area of research.
While numerous hypotheses and treatments have been proposed to slow or reverse ageing, including calorie restriction, exercise, and some medications, none have been shown to completely reverse the ageing process in mammals. There is still much to learn about the underlying causes of ageing and how to effectively combat them. Aging contributes to population control by keeping the population in check.
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calcium is released and sequestered differently in skeletal and cardiac muscles. what is one physiological relevance of cardiac muscle calcium handling?
Calcium is released and sequestered differently in skeletal and cardiac muscles, this difference is due to the specific properties of the muscle fibers of each muscle.
In skeletal muscle, calcium is released from the sarcoplasmic reticulum (SR) into the cytoplasm in response to an action potential. In cardiac muscle, calcium is released from the SR and also from the extracellular space. This difference in calcium handling is physiologically relevant because in cardiac muscle, calcium ions play a key role in the contraction and relaxation of cardiac muscle fibers. Calcium ions bind to the protein troponin, which then triggers a series of events that result in muscle contraction. The cardiac muscle fibers are able to release calcium ions from the SR and extracellular space, this allows for a more rapid and sustained contraction of the cardiac muscle, which is necessary for the efficient pumping of the blood throughout the body.
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the biological approach to psychology focuses on the brain and system. true or false
True, the biological approach to psychology focuses on the brain and system.
The study of the biological and physiological mechanisms underlying behavior and mental processes is the main objective of the biological approach to psychology.
Using this method, researchers look at how the brain and nervous system affect behavior as well as how genetic, evolutionary, and physiological variables play a role. This method highlights how crucial it is to comprehend the biological underpinnings of both behavior and mental processes in order to properly comprehend and account for human behavior.
Psychology is thus important branch of science in order to better understand the behavior of the humans as well as their relationships.
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True. The biological approach to psychology is focused on understanding the biological bases of behavior.
This approach views behavior as the result of interactions between the brain, nervous system, and the environment. This approach seeks to understand how biological processes such as hormones, neurotransmitters, and brain structures influence behavior and how behavior can change these biological processes. This approach also looks at genetics and evolution to understand how behavior is influenced.
For instance, this approach investigates how genetic factors can influence a person's personality or how evolutionary pressures can shape behavior. Research within this approach has been used to explain and treat various mental disorders.
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in dna fingerprinting what do restriction enzymes do
Restriction enzymes will use the recognition sequence to identify every location on a DNA molecule and cut the DNA there
to what diameter must it be expanded to increase the blood flow by a factor of 5.0 with no change in pressure?
Increasing the radius of the vessel by a factor of the square root of 5 would increase blood flow by a factor of 5.0 while maintaining constant pressure.
The relationship between blood flow, pressure, and diameter of a vessel is complex and influenced by many factors, such as the viscosity of the blood, the elasticity of the vessel walls, and the resistance of the vessel to distension. However, in general, blood flow is directly proportional to the fourth power of the radius of a vessel. This is known as Poiseuille's law.
If we want to increase the blood flow by a factor of 5, we need to increase the radius of the vessel by a factor of the square root of 5.
The formula to calculate the diameter:
Diameter = (5^(1/4)) * Diameter_initial
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A population of water beetle lives in a small pond on a cattle range. During a severe drought, a herd of cattle accidentally drink up many water beetles from a water source, preventing the beetle's genes from being passed to future generations. Which of the following evolutionary mechanisms is represented by this scenario?
A.Gene Flow
B.Genetic Drift
C.Independent Assortment
D.Mutation
in a differentiated cell what percent of genes are active?
In a differentiated cell, only a small percentage of the total number of genes in the genome are active, or expressed.
The exact percentage of active genes varies depending on the type of cell and its stage of development, but it is generally estimated to be around 1-2%. The remaining 98-99% of the genome is made up of non-coding regions, such as introns and intergenic regions, that do not encode for proteins.
This is because only a small subset of genes are needed to perform the specific functions of a particular type of cell. For example, a muscle cell will express genes that are involved in muscle contraction, while a nerve cell will express genes that are involved in nerve signaling. Different cells in the same organism may express different sets of genes due to the different functions they perform.
In addition, many genes are turned on or off depending on the cell's developmental stage and the environmental signals it receives. This allows cells to respond to changes in their environment and to differentiate into different cell types.
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In a differentiated cell only 10 to 20% of the genes are active genes. Cells are vital building blocks of every organism. There are various types of cells performing multiple functions every period of time.
When a cell is altered into a more formed and mature state such that it becomes specialized in terms of function and no longer remains generalized.
Cellular differentiation is a process in which young and immature cells that have non specialized functions undergo gradual development to get converted into more specific and mature cells, essential for various metabolic functions and growth development or when dividing cells alter their phenotypical and functional attributes.
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before placing the slide on the stage of a compound light microscope, which of the actions must be completed?
Lower the stage all the way using the coarse focus knob. Rotate the revolving nosepiece and click the 4x objective lens into place. Turn on the microscope using the power switch. Raise the stage all the way using the coarse focus knob. Rotate the revolving nosepiece and click the 10x objective lens into place
Before placing the slide on the stage of a compound light microscope, actions must be completed is a. Lower the stage all the way using the coarse focus knob. c. Turn on the microscope using the power switch.
While using microscope one should place the slide to the nosepiece to help holds the objective lenses. These eyepiece or the ocular is known as the first lens that you look through by using a magnification of about 10x .In compound microscope this is located at top of the body tube.
On completed viewing , when you lower the stage, you need to click the low power lens in such position as to remove the slide. Switch off the microscope is mandatory when not in use. also Avoid touching the glass of the lenses by your fingers. special lens papers are used to clean the lenses.
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Before placing the slide on the stage of a compound light microscope,
The power switch must be turned onThe stage must be lowered all the way using the coarse focus knobThe revolving nosepiece must be rotated and the desired objective lens (typically the lowest magnification) must be clicked into place.When preparing to use a compound light microscope, it is important to turn on the power switch to ensure that the illumination source is functioning. Additionally, the stage should be lowered all the way using the coarse focus knob to prevent damage to the microscope or slide during placement.
Once the slide is in position, the revolving nosepiece should be rotated and the objective lens with the lowest magnification (typically 4x) should be clicked into place. Only after these steps have been completed should the stage be raised using the coarse focus knob for initial focusing.
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Complete Question:
Before placing the slide on the stage of a compound light microscope, which of the actions must be completed?
1. Lower the stage all the way using the coarse focus knob.
2. Rotate the revolving nosepiece and click the 4x objective lens into place.
3. Turn on the microscope using the power switch.
4. Raise the stage all the way using the coarse focus knob.
5. Rotate the revolving nosepiece and click the 10x objective lens into place.
Most scientists now subscribe to the three-domain system of classifying organisms, which has
replaced the five-kingdom system. Which is the main reason for this change?
(1 Point)
The main reason for the change from the five-kingdom system to the three-domain system of classifying organisms is based on molecular evidence, specifically the analysis of ribosomal RNA (rRNA) sequences.
The three-domain system was proposed by Carl Woese in 1977 and it is based on the idea that there are three major branches of life: Bacteria, Archaea and Eukarya.
The three-domain system recognizes that the prokaryotic organisms (Bacteria and Archaea) are more different from each other than they are from the eukaryotic organisms (Eukarya) and therefore they should be placed in separate domains.
The five-kingdom system, on the other hand, placed prokaryotic organisms in the same kingdom as eukaryotic organisms.
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The main reason for the change from the five-kingdom system to the three-domain system of classifying organisms is based on molecular evidence, specifically the analysis of ribosomal RNA (rRNA) sequences.
The three-domain system was proposed by Carl Woese in 1977 and it is based on the idea that there are three major branches of life: Bacteria, Archaea and Eukarya. The three-domain system recognizes that the prokaryotic organisms (Bacteria and Archaea) are more different from each other than they are from the eukaryotic organisms (Eukarya) and therefore they should be placed in separate domains. The five-kingdom system, on the other hand, placed prokaryotic organisms in the same kingdom as eukaryotic organisms.
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Which one of which of the following is not a part of an atom?
Proton
Molecule
Neutron
Electron
molecules that absorb specific wavelength of sunlight
Answer:
Pigments absorb specific wavelength of sunlight.
Explanation:
Instead, pigments, which are light-absorbing compounds found in photosynthetic organisms, only absorb some visible light wavelengths while reflecting others. The range of wavelengths that a pigment absorbs is known as its absorption spectrum.