According to the Endosymbiotic theory, free-living bacteria were phagozited by another cell. The internal membrane of chloroplast represents the plasma membrane of cyanobacteria.
What does the endosymbiotic theory state?
The endosymbiotic theory proposes that mitochondria and chloroplasts were once free-living bacteria that were phagocytized by another cell but not digested.
These bacteria got to adapt to their host, and both cells became interdependent.
Both organelles have many similarities with other free-living bacteria.
Chloroplasts probably derivate from cyanobacteria. Mitochondria derivate from rickettsias.From the phagocytosis moment, these two cells became so dependent on each other, that they could not survive without the other one.
Chloroplasts and mitochondria share some traits with free-living bacteria, that support the theory.
Both organelles present their genetic material. This DNI is independent of the cell's DNA, is bi-catenary and circular, identical to the bacterial DNA, and very different from the one of the eukaryotic cells. Both organelles divide by binary fission, not by mitosis, and can synthesize their ribosomes and organelles. Both organelles present a double membrane, a characteristic that reinforces the idea of being phagocyted. The internal membrane looks identical to the bacterial membrane, while the external membrane looks like the eukaryotic one.In fact, in this internal membrane are placed the energy centers, just as it occurs in bacterias membrane.
Finally, the sizes of the organelles are similar to the size of some procaryotes.According to this information, we could say that membrane of the chloroplast that represents the plasma membrane of the ancestral cyanobacteria is the internal membrane.
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Particles in a liquid have _____ movement than particles in a solid.
Group of answer choices
a more orderly arrangement
more movement
less movement
Which situations would be most likely to negatively influence teenagers by increasing the risk of underage use of alcohol?
The situations that would be most likely to negatively influence teenagers by increasing the risk of underage use of alcohol are options(a),(b),(d), and (e). seeing advertisements that portray drinking as typically occurring in social settings, being provided alcohol at events by friends, having a history of alcohol misuse, alcoholism, or another addiction in one's family, and an alcoholic parent or parents
Since the developing brain continues to expand until the mid-20s, drinking alcohol as a teenager can dramatically increase the risk of injury to the developing brain. Additionally, it might lead to problems with alcohol in the future. When you drink a lot of alcohol quickly with the intention of becoming inebriated, this is called binge drinking.
Chronic illnesses and other grave issues, such as high blood pressure, heart disease, stroke, liver disease, and digestive issues, can develop over time as a result of heavy alcohol consumption. Cancer of the rectum, liver, colon, mouth, throat, esophagus, and breast. An immune system that is compromised by excessive drinking makes the body a much easier target for disease. Chronic drinkers are more likely than non-drinkers to get illnesses like pneumonia and TB.
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The complete question is:
Which situations would be most likely to negatively influence teenagers by increasing the risk of underage use of alcohol?
seeing advertisements that portray drinking as typically occurring in social settingsbeing provided alcohol at events by palsa partner who contracted an STD while intoxicatedhaving a history of alcohol misuse, alcoholism, or another addiction in one's familyan intoxicated parent or parentsConsider a portion of a gene that contains 48 nucleotides. how many amino acids will be coded for by this section of the gene?
The portion of a gene that contains 48 nucleotides can synthesize 16 different amino acids of a given polypeptide chain.
What is a codon?A genetic codon is a sequence of three consecutive nucleotides in a gene that specifies a given amino acid after transcription to mRNA and the translation in the ribosomes.
There are 20 different amino acids which can be codified by 64 different nucleotide codons (which represent triplets of nucleotides), it is for that reason that the genetic code is said to be degenerate.
In conclusion, the portion of a gene that contains 48 nucleotides can synthesize 16 different amino acids of a given polypeptide chain.
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
A: Cytoplasm
Explanation:
Suppose a toxin was found that entered cells and selectively destroyed their ribosomes. what effect would this probably have on the cell?
If a toxin enters the cell and destroys the ribosomes, the cell will not function properly and can end in its destruction.
What effect would this probably have on the cell?The effect that it could have on the cell is that the proteins for the various processes that occur within the cell, such as the formation of enzymes, will not be formed correctly, which will end in the cellular processes that it may have, such as the production of certain cellular signals to give their functions.
Therefore, we can confirm that if a toxin enters the cell and destroys the ribosomes, the cell will not function properly and can end in its destruction.
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Which compound does not cross the inner mitochondrial membrane due to lack of a specific transport protein?
NADH compound does not cross the inner mitochondrial membrane due to lack of a specific transport protein.
All living cells contain the coenzyme NADH, which consists of two nucleotides connected by their 5'-phosphate groups, one of which contains an adenine base and the other of which contains nicotinamide. It functions as a cofactor and a fundamental metabolite. Both a NAD and a NAD(P)H.Cristae, or folds, are formed by the inner membrane and extend into the matrix, or interior, of the organelle.A high energy electron is transferred along an electron transport chain to the inner mitochondrial membrane. Hydrogen is pumped out of the matrix space by the energy released. As a result, a gradient is produced that forces hydrogen back through the membrane via ATP synthase.To learn more about mitochondrial.
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Can someone please help me with this!!!!
The term experiment has to do with the relationship between the dependent and the independent variables in a study .
What is an experiment?When we are are carrying out an experiment, the aim is always to know the effect of one variable on another. One is the dependent variable and the other is the independent variable
Experiment A
Independent variable - Cure for knee problem
Dependent variable - Relief from the knee problem
Control group - Those who were given the placebo
Experiment B
Experimental variable -The reaction of the deer
Independent variable - The use or not of the tiger urine
Dependent variable -Whether or not the deer was repelled from the tree seedlings
Control group - Tree seedlings without with tiger urine
Controlled variables - Type of seedlings, specie of deer and tiger
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How is the flow of hemolymph through an open circulatory system similar to the flow of water through an outdoor fountain?
Fluid is pushed via a tube and then returned to the pump after accumulating in a pool in both an open circulatory system and a fountain.
What are the circulatory systems' main functions?Wastes are moved by the circulatory system, which also gives cells oxygen and nutrition. Blood is alternately oxygenated and hypoxic by the heart. The three different types of blood vessels are arteries, capillaries, and veins.
Lungs, which function as an internal gas exchange system, help to keep the gas exchange surface wet and reduce water loss. This makes a larger variety of terrestrial environments suitable for animal life. The very branching structure of the bronchial tree results in a large number of tiny alveoli.
It is advantageous because it prevents the moist respiratory epithelial surface from evaporating in the atmosphere.
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what is sugma and ligma
The sugma and ligma are the rare diseases cause by the bofa family viruses.
Sugma and Ligma are both diseases and are related to each other where LIGMA is also known as loose internal gene miaasintits and this is the second stage od BOFA which is biologically offset farkowonian asintits and this diseases interferes with the immune system and it increases the risk of having tuberculosis and if in LIGMA a person enter the BOFA stage it is considered as last treatable stage and due to highly weakened immune system the people are most likely to die at this stage but still there is one treatment suggested n this case called as LIGMA balls where as SUGMA is the rarest antibiotic strain resistant of LIGMA virus and this sugma is non lethal but is contagious and can spread very fast and its great prevention is by awareness of BOFA family viruses s sugma strain can be transferred via both verbal and virtual communication and as it is a rare disease so the cure are not there as the most difficult part is the virus detection in these disease as by the time the virus is detected it has already used and lysed the host machinery cells and eventually these disease leads to death of the host.To know more about sugma and ligma click at https://brainly.com/question/1228921
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Properties of the cell membrane
A common starting point for scientists who seek to learn new things is a(n) __________ .
A common starting point for scientists who seek to learn new things is observation.
What is the role of observation in science?Science depends heavily on observation. Through observation, scientists collect evidence that enables them to develop and later test theories and hypotheses. Using their own senses or tools to improve their vision or hearing, such as microscopes, scanners, or transmitters, scientists can observe in a variety of ways. These tools allow for more exact and accurate observations. Instruments are also used by scientists to track intangible phenomena like pH or radiation.
How do scientists make new discoveries?By presenting observational data and making an effort to form a preliminary, rough knowledge of a phenomenon, discovery is produced. A five-sigma degree of certainty is the generally accepted definition of a discovery in the field of particle physics.
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Which of the following is common to the development of both birds and mammals? a. holoblastic cleavage b. epiblast and hypoblast c. trophoblast d. gray crescent
Epiblast and Hypoblast are common in the development of both birds and mammals.
Hypoblast is the second layer of the embryonic disc that creates the yolk sac, Epiblast is one of the two layers that creates the three basic germ layers (ectoderm, definitive endoderm, and mesoderm), amnionic ectoderm, and extraembryonic mesoderm.
The embryonic disc is made up of two parts: epiblast and hypoblast.
The epiblast and hypoblast are formed by layering the core cell mass. As a result, the inner cell mass gives rise to the epiblast and hypoblast.
Additionally, epiblast cells are topped by hypoblast cells.
Both layers are formed before implantation and gastrulation.
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Water moving from a high concentration in the plasma to an area of lower concentration in the kidney tubule is an example of?
Water moving from a high concentration in the plasma to an area of lower concentration in the kidney tubule is an example of osmosis.
What is osmosis?Osmosis is the process in which there is a passive diffusion of water through a semi-permeable membrane where it passes from the most dilute solution to the least dilute. This process occurs without an energy expenditure since it does not require the use of energy-dependent channels for diffusion to take place.
Therefore, we can confirm that water moving from a high concentration in the plasma to an area of lower concentration in the kidney tubule is an example of osmosis.
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WRITE ABOUT A THEME: ORGANIZATION Cells are the basic units of structure and function in all organisms. A key feature in the life cycle of plants is the alternation of multicellular haploid and diploid generations. Imagine a lineage of flowering plants in which mitotic cell division did not occur between the events of meiosis and fertilization (see Figure 30.12). In a short essay (100-150 words), describe how this change in the timing of cell division would affect the structure and life cycle of plants in this lineage.
The alternation of generations is a phenomenon present in the life cycle of all plants and also in some algae and fungi. This alternation means that during the life of the plant it will go through a haploid phase, called the gametophyte, which will alternate with the diploid generation, known as the sporophyte. The change in cell division time would affect the structure and life cycle of plants in this lineage because the haploid time, where the plant does not reproduce, will increase, making the plant inferred and not producing offspring for a longer time.
What happens during cell division?Before any cell division, DNA duplication occurs during interphase. The G2 phase corresponds to the interval between DNA synthesis and mitosis. The cell continues to grow and produce proteins.
With this information, we can conclude that The classification of cells in diploid and haploid refers to the chromosome set of each one.
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Consider a grassland with five trophic levels: grasses, mice, snakes, raccoons, and bobcats. If you released additional bobcats into the grassland, how would grass biomass change if the bottom-up model applied? If the top-down model applied?
If the number of bobcats increased, the number of plants would decrease in bottom-up model but increase in a top-down model.
What is the bottom-up model and top-down model?The bottom-up model refers to the model where changes affect the bottom to the top.
The top-down model is the model in which changes affect the top before the down first.
Considering the grassland with five trophic levels:
grasses,mice,snakes,raccoons, andbobcats.Grass is at the bottom whole bob-cats are at the top.
Using a bottom-down model, if the number of bobcats increased, the number of plants would decrease.
Using a top-down model, if the number of bobcats increased, the number of plants would increase.
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An example of secondary succession is:_____.
a. crabgrass colonizing an abandoned wheat field.
b. grasses colonizing sand dunes.
c. lichens colonizing a rock.
d. weeds colonizing a volcanic lava flow.
An example of secondary succession is (a) crabgrass colonizing an abandoned wheat field.
Secondary succession is the phenomenon where the establishment of life takes place again because the climax community of the early succession was removed. However, the essential conditions for life are still present in the area where succession takes place. The time taken to establish secondary succession is less than the primary succession.
Crabgrass are the grasses, scientifically known as Digitaria. Their native habitat is the warm and tropical temperate regions. It is an annual plant that lives only for one year and then dies. The crabgrass can be of two types: smooth crabgrass and hairy crabgrass.
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The smallest clade that includes all protists and archaea would also include? fungi only animals and fungi animals only animals, fungi and bacteria bacteria
The smallest clade that includes all protists and archaea would also include animals and fungi.
Why were Archaea and Bacteria grouped together?Archaea and bacteria are the part of the same taxonomic kingdom because they were both are prokaryotic organisms that have no nucleus in their cells but the scientists also discovered in their research that archaea has different molecular structure as compared to bacteria. Clade is a branch that has a single common ancestor and all of its descendants. A cladogram is a diagrams that shows ancestral relationships between different types of organisms. Animals and fungi are also include in one clade because of their similarities.
So we can conclude that the smallest clade that includes all protists and archaea would also include animals and fungi.
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Select the biochemical pathways that are involved in the breakdown of glucose? conjugation citric acid cycle glycolysis transpiration electron transport chain
The Krebs cycle, oxidative phosphorylation, glycolysis, and pyruvate oxidation make up the entire biological process that are involved in the breakdown of glucose.
What is citric acid cycle glycolysis?The citric acid cycle is a series of chemical reactions that eliminate high-energy electrons and use them in the electron transport chain to create ATP.
One molecule of ATP (or an equivalent) is produced each time the cycle is completed. The chemicals used in the citric acid cycle are created during glycolysis.
Pyruvate will eventually be broken down via the citric acid cycle in the cell's mitochondria to inorganic molecules like carbon dioxide and water, releasing all the energy held within the molecule.
Therefore, cellular respiration is involved in the breakdown of glucose.
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Sally was admitted for outpatient surgery with a diagnosis of abdominal pain. the final diagnosis was mass in stomach. the principal diagnosis is?
Sally was admitted for outpatient surgery with a diagnosis of abdominal pain. The final diagnosis was mass in stomach. The principal diagnosis is mass in stomach
What exactly is a primary diagnosis?Only when a doctor has finished all essential tests and examinations is a principal diagnosis—the reason for a patient's initial hospital admission—assigned.
There are causes of abdominal pain besides underlying illnesses. Constipation, wind, overeating, stress, and muscle strain are a few examples.
Constipation, irritable bowel syndrome, food allergies, lactose intolerance, food poisoning, and stomach viruses are less serious causes of abdominal pain. Appendicitis, an abdominal aortic aneurysm, a bowel obstruction, malignancy, and gastroesophageal reflux are some of the more severe reasons.
Therefore, Sally was admitted for outpatient surgery with a diagnosis of abdominal pain. The final diagnosis was mass in stomach. The principal diagnosis is mass in stomach.
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Sally was admitted for outpatient surgery with a diagnosis of abdominal pain. The final diagnosis was mass in stomach. The principal diagnosis is __________ in stomach.
the dispute over the relative importance of genetics and learning is often called the evolved modifiability debate. the dispute over the relative importance of genetics and learning is often called the evolved modifiability debate. true false
The relative importance of genetics and learning is often called the evolved modifiability debate. This is False. The debate is actually about how much of our behavior is due to nature (genetics) versus nurture (environment).
Most experts now agree that both nature and nurture play a role in human development. However, the debate continues about which is more important. Some people believe that our genes are the most important factor in determining our behavior. Others believe that our environment is more important.
There is no easy answer to this debate. Both factors are important in shaping who we are. However, it is likely that the importance of each varies from person to person.
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How does energy transfer through a forest?
Answer:
Photosynthesis
Explanation:
Source: Energy Flow - Tropical Rainforest Biome Energy Flow Light energy from the sun is converted to chemical energy by plants through the process of photosynthesis. Photosynthesis produces oxygen for all organisms and a source of food for herbivores.
Hope this helps.
Your client has a diagnosis of hypervolemia. what would be an important intervention that you would initiate?
According to the research, the correct option is giving diuretics, and a low-salt diet. If a client has hypervolemia would be an important intervention giving diuretics and a low-salt diet.
What is hypervolemia?It is the abnormal concentration of fluids and solutes in all compartments of the body and is a factor that enhances cardiovascular mortality.
In this sense, it is considered as the excess volume of liquids; due to the abnormal retention of water and sodium in the same proportions in which they usually exist in the extracellular medium.
Therefore, we can conclude that according to the research, the correct option is giving diuretics, and a low-salt diet. If a client has hypervolemia would be an important intervention giving diuretics and a low-salt diet.
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Number the events from earliest (1) to most recent (6) to outline the development of the cell theory.
Anton van Leeuwenhoek observed small organisms he called “animalcules.”
Robert Hooke was the first to use the word “cell.”
Matthias Schleiden theorized that plants are made of cells.
Theodor Schwann theorized that animals are made of cells.
Hans and Zacharias Janssen created the first microscope.
Rudolf Virchow theorized that cells come from other pre-existing cells.
The most well-known theory in cell biology is the one known as the "cell theory," which proposes that pre-existing cells give rise to new cells and the idea of plant cells.
The first microscope was made by Hans and Zacharias Janssen in 1590, and he utilized a compound microscope to observe minuscule objects that were invisible to the human eye.In 1660 , Robert Hooke was the first to use the word “cell.”Animalcules were tiny organisms that Anton van Leeuwenhoek discovered in 1674.In 1838 ,Matthias Schleiden theorized that plants are made of cells.In 1839 ,Theodor Schwann , he was a zoologist and theorized that animals are made of cells .Rudolf Virchow proposed the theory that cells originate from other existing cells in 1858, implying that the cell divides and produces new cells.The statements are arranged on the basis of years from most earliest to recent discovery.
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How does the average number of drops required to break open a whelk depend on platform height for a drop of 5 meters or less? For drops of more than 5 meters?
With increased drop height, fewer drops are necessary.
Which of the following best illustrates how an inhibitory signal affects the potential of a neuronal membrane?The membrane becomes hyperpolarized by inhibitory impulses, further degrading the membrane potential.
The distribution of biomes is influenced by latitude and altitude, which have an impact on precipitation and temperature.
Competition is considered to exist when several species compete for the same scarce resource. Members of the same species might engage in a competitive manner.
Terrestrial biomes are defined chiefly by the type of plant that predominates in them, which is mostly influenced by temperature and precipitation.
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Explain a technique that can be used to distinguish between simple and compound leaves. Define all scientific terms that you use.
A technique that can be used to distinguish between simple and compound leaves is the pattern of incisions on the leaves of the plant.
Incisions are cuts into the soft tissue of the leaf. If the incisions on the leaf did not touch the midrib of the leaf, it is called as simple leaf. Midrib is the large vein that is visible in the middle of the leaf.
The compound leaf is one in which the incisions or cuts touch the midrib and the leaf would be divided into several leaflets. Leaflet is a part of compound leaf with leaf like structure.
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Complete each statement by choosing the correct answer from the drop-down menu. is a result of the kidneys not being able to properly regulate or remove acids in the blood. when the lungs are not able to function at their normal speed, can occur.
Acidosis is the inability of the kidneys not being able to regulate or remove acids in the blood. When the lungs are not able to function at their normal speed, respiratory acidosis can occur.
Acidosis is caused by an overproduction of acid that builds up in the blood or an excessive loss of bicarbonate from the blood (metabolic acidosis) or a buildup of carbon dioxide in the blood that results from poor lung function or depressed breathing (respiratory acidosis).
Acidity and alkalinity are expressed on the pH scale, which ranges from 0 (strongly acidic) to 14 (strongly basic or alkaline). A pH of 7.0, in the middle of this scale, is neutral. Blood acidity increases when people ingest substances that contain or produce acid or when the lungs do not expel enough carbon dioxide.
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In addition to temperature, a terrestrial biome is defined by? i. annual precipitation. ii. distinctive animal species. iii. distinctive plant species.
Biomes are defined according to their climatic patterns (temperature, precipitation) and vegetation structure. Options i and iii. annual precipitation and distinctive plant species.
What is a biome?A biome might be defined as a community at a supercontinental scale.
It is a group of communities from different parts of the world that express the same or very similar physiognomy.
Biomes are defined according to climatic patterns, vegetation structure, and the other forms of life inhabiting them. This is an ecological classification.
The location of a biome is determined by climatic conditions in each region.
Precipitation and humidity levels are significant factors that characterize the biome.
In addition to temperature, a terrestrial biome is defined by
i. annual precipitation.
iii. distinctive plant species.
Option i and iii are correct
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explain one way in which facilitated diffusion is the same as simple diffusion and one way in which it is different from simple diffusion. quizlet
Facilitated diffusion is similar to simple diffusion in that it consumes no energy and diffuses material along a gradient. Facilitated diffusion differs from simple diffusion in that it necessitates the presence of carrier proteins.
Simple diffusion and assisted diffusion are two forms of passive transport techniques in which molecules are transported across the cell membrane. It leverages natural entropy to shift molecules from higher to lower concentrations until the concentrations are equalized. As a result, no ATP energy is required for molecular movement. Passive transport is classified into four types: osmosis, simple diffusion, assisted diffusion, and filtration. The primary distinction between simple diffusion and facilitated diffusion is that simple diffusion is an unassisted type of diffusion in which a particle moves from a higher concentration to a lower concentration across a membrane, whereas facilitated diffusion is the transport of substances across a biological membrane through a concentration gradient via a carrier molecule.
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The metabolic machinery of the cell, highly organized structures that carry out specific functions for the cell are __________.
The highly organized structures that carry out specific functions for the cell are called organelles.
What are organelles?Inside cells, organelles are specialized structures that carry out a variety of tasks. Literally, the phrase refers to "tiny organs." Organelles provide specialized duties to keep a cell alive, just like organs like the heart, liver, stomach, and kidneys serve specific roles to keep an individual alive.
Prokaryotic cells and eukaryotic cells, which are divided into two distinct groups based mostly on the existence of one organelle, the nucleus, are types of cells. Eukaryotic cells have nuclei, but prokaryotic cells do not. The nucleus is a sizable organelle that houses DNA and acts as the brain of the cell. Prokaryotic cells often make up single-cell creatures, whereas eukaryotic cells typically make up multicellular species.
Therefore, organelles are the structures of the cell that carry out its specific functions.
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Stephanie was helping her mother make spaghetti for dinner. She saw the water begin to boil over the pot on the stove and wondered if there was any way to keep the water from boiling over. Stephanie’s mother told her she could add salt in the water to keep it from boiling over. Stephanie wanted to test if this was true. The following day, Stephanie and her mother got two pots of equal size. They added two cups of water to both pots and a 25 grams of salt to one pot. They set both pots on the same size burners on the stove on high heat and timed to see how long they both took to boil over. They found that the pot without salt boiled over much quicker than the pot with salt. What is the independent, dependent, Experimental control, and the constant.
Ind. variable: salt added/not added. Dep. variable: water boiling over. Controlled variables: pot size, number of water cups, high heat. Exp. group: Water to which salt was added. Control group: Water with no salt on it.
What are the variables in an experiment?Independent variableThis is the variable changed on porpose by the researcher to study how these changes affect the dependent variable response, and hence, the experiment results.
Dependent variableThis is the one directly affected by the changes provoked by the independent variable. It will change following the changes in the independent variable.
Controlled variablesSince several variables might influence the results, the researcher must keep constant all the other variables that might influence the results. The reason is to make sure the only one affecting the dependent variable response is the independent one.
In the exposed example,
Goal: to test if salt keeps water from boiling over fast.
Independent variable: added salt
Dependent variable: water boiling over
Controlled variables: pot size, number of water cups, high heat.
Experimental group: Water to which salt was added
Control group: Water with no salt on it.
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