Spores are the cells performing asexual reproduction whereas gametes are involved in sexual reproduction in the land plants. The non-vascular land plants have various structures like elaters, peristomeal teeth, capsules, etc. that help in spore dispersal.
Spores are the diploid non-gametic structures involved in reproduction. They alone can give rise to offspring through asexual mode of reproduction. They can reproduce by fragmentation or by formation of special structures called gemmae.
Peristomeal teeth are the triangular tooth-like structures that surround the capsule of bryophytes. There are two sets of teeth with 16 in each set. They perform hygroscopic movement and therefore help in dispersal.
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the posterior atrial wall is smooth, but the auricle and anterior wall exhibit obvious muscular ridges, called
The posterior atrial wall is smooth, but the auricle and anterior wall exhibit obvious muscular ridges, called right atrioventricular opening.
What is posterior wall isolation?The posterior wall isolation technique for atrial fibrillation ablation is based on the assumption that the posterior left atrium has an arrhythmogenic substrate. Posterior wall isolation techniques include box isolation, single ring isolation, and debulking ablation.
What is posterior atrium?The sinus venarum is the posterior section of the right atrium that encompasses most of the chamber's lateral wall. In comparison to the anterior section, it has a comparatively smooth surface. The crista terminalis connects the posterior and anterior walls.
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An ancestor and all of its descendants are known as a monophyletic group or a(n) ________. a. apomorphy b. plesiomorphy c. synapomorphy d. clade
An ancestor and all of its descendants are known as a monophyletic group or a clade.
A monophyletic group, or clade, is a group of organisms that includes an ancestor and all of its descendants. This is in contrast to a paraphyletic group, which includes an ancestor and some, but not all, of its descendants.
There are many ways to define monophyly, but one common way is to use phylogenetic trees. A clade is a group of organisms that includes all the descendants of a common ancestor. If two groups are each other's closest relatives, they are said to be monophyletic.
Monophyletic groups tend to be more evolutionarily successful than paraphyletic ones, because they have all the genetic information of their ancestor. This is because they share a common ancestor, and so are more likely to have similar traits. They are also more morphologically and behaviorally homogeneous, and make it easier to study their evolution.
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producing energy that fuels the activities of the cell is a function of the . a. myelin sheath b. axon terminals
producing energy that fuels the activities of the cell is a function of- c. cell body
Neurons are the structural and functional part of the nervous system. It is divided into dendrites, cell body and axon.
The dendrites are responsible for carrying the action potential into the cell. The cell body have the organelles like nucleus, mitochondria and nissl granules.
The axon carries the action potential into the next nerve cell. sometimes it can be covered with myelin sheath which increases the speed of transmission of nerve impulse.
Since mitochondria are responsible for producing the energy which are present in the cell body. Cell body will be producing energy required for cell.
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What type of molecule should be able to pass through the cell membrane most easily?
Small and hydrophobic molecules should be able to pass through the cell membrane most easily.
The cell membrane is a selectively permeable membrane that separates the interior of a cell from the exterior of a cell.
The cell membrane is mainly made up of a phospholipid bilayer. The phospholipids are arranged in such a manner that the heads made of phosphate are pointing outwards and the tails made of lipids are pointing inwards.
The heads are hydrophilic whereas the tails are hydrophobic. Hence, molecules that are hydrophobic and small can easily pass through the cell membrane as they do not get trapped by the tails. On the other hand, hydrophilic molecules as well as large molecules will have difficulty passing through the cell membrane.
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How many electrons, protons, and neutrons are present in this atom of carbon
Answer: P=6 E=6 N=6
Explanation:
The process for finding Protons, Electrons, and Neutrons is quite simple. The atomic number (the number at the top of the element) is both your Proton and Electron count. You then round the atomic mass to the nearest number (12, in the Carbons case) and subtract the atomic number from that. ( 12-6=6) See APE MAN PEN.
Answer:
P=6 E=6 N=6
The process for finding Protons, Electrons, and Neutrons is quite simple. The atomic number (the number at the top of the element) is both your Proton and Electron count. You then round the atomic mass to the nearest number (12, in the Carbons case) and subtract the atomic number from that. ( 12-6=6) See APE MAN PEN.
A lung biopsy and magnetic resonance imaging have confirmed the presence of a benign lung tumor in a client. Which characteristic is associated with this client's neoplasm?
The characteristic that is associated with this client's neoplasm of a benign lung tumor is that the tumor grows but is encapsulated and therefore cannot continue with its development.
What is a benign lung tumor?A benign lung tumor is a group of cells in the lung that proliferate in an uncontrolled way but they have a limit to producing a mass that does not grow more until reach to a boundary.
A benign lung tumor may remain over years and it does not represent a harmful risk for life of the patient/client.
In conclusion, the characteristic that is associated with this client's neoplasm of a benign lung tumor is that the tumor grows but is encapsulated and therefore cannot continue with its development.
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Hawaiian silverswords underwent a remarkable adaptive radiation after their ancestor reached Hawaii, while the islands were still young (see Figure 25.22). Would you expect the cattle egret to undergo a similar adaptive radiation in the Americas (see Figure 52.17 )? Explain.
The dispersion of people within a confined area is known as population distribution. People are disproportionately spread out throughout society.
Since it is how invasive species proliferate and how organisms track habitat variations brought on by climate change, the expansion of range is both a crucial applied and fundamental concern.Ecologists claim that a competitor can restrict or even prevent a species' range expansion. The necessity of dispersal is revealed when organisms reach a previously unoccupied area, known as a range extension.As the environment changes, organisms rapidly transform into new forms. Biotic interactions alter or new niches become available when the environment shifts and new resources become available.Hawaiian silverswords, a plant native to North America, is an excellent example of tarweed that spreads widely. Natural range expansions eloquently illustrate the impact of dispersal on distribution.Learn more about the Adaptive radiation with the help of the given link:
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What two components contribute to species diversity? Explain how two communities with the same number of species can differ in species diversity.
The two main components of species diversity and these are;
species richnessspecies compositionWhat is specie diversity?The term species diversity has to do with the existence of several species in a habitat. We know that a given habitat could be home to so many species that exist together and depend on each other.
There are two main components of species diversity and these are;
species richnessspecies compositionWe know that a community is composed of different species of organisms. However, two communities differ in their species diversity depending on the suitability of the system to sustain many species.
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Since the day we are born, our brain is continuously learning as we observe and explore the world around us. the brain's ability to engage in this process is known as _____.
Answer:
Neuroplasticity
Explanation:
Neuroplasticity is what allows the brain to form connections as we learn and observe new things. It makes our learning faster and out memory sharper each time the brain makes a new connection or pathway.
She forms a hypothesis that color reaches the flower through the stem. What should Maria do to confirm the hypothesis
Answer:
Maria should then put the cut stem into the red colour water. Once this is done,Maria should keep the jar in a shade,and give it time to obtain the result. Of the flower gets some red sheds then the hypothesis is hold.
Explanation:
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What country will soon become the first large industrial economy powered primarily by renewable energy?
Germany will soon become the first large industrial economy powered primarily by renewable energy
Renewable energy derives from sources that are infinite like the sun, wind, and water, or from sources that refill themselves naturally like geothermal and biomass. like Geothermal, Hydroelectric, Solar, wind.
Fuels that can NOT be reformed during a lifetime are said to be non renewable energy
Electricity that derives from renewable energy sources considered better for the planet because it emits little or no air pollution and will not run out.
We often call renewable energy technologies clean or "green" because they produce few if any pollutants
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What is the genetic problem that leads on to defective hemoglobin and shape of the rbcs in sickle cell anemia?
SCD is caused by a faulty gene known as the sickle cell gene. Sickle cell disease patients are born with two sickle cell genes, one from each parent.
What is the aetiology of sickle cell anaemia?Sickle cell disease (SCD) is a hereditary illness caused by a mutation in both copies of the HBB gene in an individual. This gene encodes a component of haemoglobin, the protein that transports oxygen in red blood cells. Because of the mutation, haemoglobin molecules clump together, resulting in sickle-shaped red blood cells.
Sickle cell disease (SCD) is a single-gene ailment caused by a single base-pair point mutation in the -globin gene that results in the amino acid valine being substituted for glutamic acid in the -globin chain.
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A process is illustrated in the diagram below.
Which process is illustrated in the diagram?
1. Gamete Formation
2. Facilitied Diffustion
3 bacterial conjunction
4 Viral reproduction
Which type of noncovalent interaction can incolce either the polypeptide backbone or amino acid side chains?
Hydrogen bonds are the type of noncovalent interaction that can involve either the polypeptide backbone or amino acid side chains.
Hydrogen bonds are the non-covalent interactions formed between two molecules. It is the bonds between an electropositive atom of one molecule and another electronegative atom of another molecules. Hydrogen atoms are formed between the atoms in covalent bonds. These atoms are found in polypeptide backbone as well as amino acid side chains.
Amino acids are the molecules that form the proteins. This happens by the joining of amino acids together by peptide bonds. There are 22 amino acids that are involved in the protein making process.
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If a human female begins taking estradiol and progesterone immediately after the start of a new menstrual cycle, how will ovulation be affected? Explain.
If a human female begins taking estrogen and progesterone
Immediately after the start of a new menstrual cycle then increased concertation of progesterone and estrogen will negatively feedback back FSH and LH so no ovarian follicle mature and no ovulation is achieved
estrogen occurs when a mature egg is released from the ovary, pushed down the fallopian tube, and is available to be fertilized.ovulation Follicular Phase is the first phase where starts the first day of the last menstrual period (LMP) and estrogen continues until ovulation.Luteal Phase - phase is from the day of ovulation until the next period begins in ovulation Follicle Stimulating Hormone triggers a few of your follicles to develop into mature eggs.Luteinizing Hormone causes the egg to burst through the ovary wall within 24-36 hours and begin its journey down the fallopian tube for fertilization.To know more about ovulation visit : https://brainly.com/question/6748709
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In the soybean experiment, the _____ used more oxygen and the ___ produced more atp.
In the soybean experiment, the germinating seeds used more oxygen and the germinating seeds used more ATP.
The necessary resources and abilities for photosynthetic energy synthesis are not present in seeds. Soybean, also known as soja bean or soya bean, is an annual legume that belongs to the Fabaceae family and is grown for its edible seed. The soybean is the most significant bean commercially since it provides ingredients for hundreds of chemical goods and millions of people with vegetable protein.Germination is the process by which a mature seed goes through activation after a period of dormancy and sprouts the first little root and shoot of the plant.Early on in seed germination, adenosine triphosphate is created and serves as the source of energy for metabolism.To learn more about germinating seeds.
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groups of tissues combine to form organs, which work together to form , which function together to accomplish a common purpose
Groups of tissues combine to form organs, which work together to form organ systems, which function together to accomplish a common purpose.
We define biological organization as a system of organizing components of a living system from smallest to largest.
For living organisms, cells work together to form particular tissues. These tissues combine and work together to form organs. When multiple organs work together to accomplish a function, then this biological organization level is referred to as an organ system. For example, the circulatory system consists of blood vessels (arteries, veins, capillaries), the heart, and blood. The function of the circulatory system is to transport blood to all parts of the body.
When all the organ systems of a body are combined, a living organism is formed.
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Approximately how long did it take for the frequency of the dominant allele to fall to half its starting value?
It takes approximately 34 months for the frequency of the dominant allele to fall to half its starting value.
When allele frequencies change over time, it's called allele frequency drift. And it turns out that the rate of drift is usually pretty slow: on average, it takes approximately 34 months for the frequency of the dominant allele to fall to half its starting value.
Why does this matter? Well, if you're tracking the frequencies of alleles in a population over time, you need to take drift into account. Otherwise, you might think that the alleles are disappearing when they're actually just drifting to lower frequencies.
So, next time you're looking at allele frequencies, remember to factor in drift! It might not seem like a big deal, but it can definitely make a difference in your interpretation of the data.
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due to less snowfall in an area white mice are eaten by predators more than dark mice this should lead to
Due to the less snowfall in the area white the mice are eaten by the predators more than the dark mice this should lead to direction selection
An example of the directional selection is the fossil records that has show that the size of the black of bears in the Europe and decreased during the interglacial periods of the ice ages, but it increased during each the glacial period. an Another example is the beak size in the population of the finches as directional selection is giraffe neck lengths. The environment was created as selection pressure which is favored by giraffes with longer necks who could be reach more food in the trees. At the same time, there was the selection pressure against the giraffes with shorter neck
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In the term trace element, the adjective trace means that a. the element is required in very small amounts. b. the element can be used as a label to trace atoms through an organism's metabolism. c. the element is very rare on Earth. d. the element enhances health but is not essential for the organism's long-term survival.
In the term trace element, the adjective trace means that the element is required in very small amounts (Option a is correct).
What is a trace element?A trace element is any chemical substance that is required to be obtained from the diet but in small amounts, such as for example vitamins and minerals.
Trace elements are very useful as dietary supplements and therefore minerals (e.g. zinc) and vitamins (e.g. vitamin B12) are being increasingly used in nutrition.
In conclusion, in the term trace element, the adjective trace means that the element is required in very small amounts (Option a is correct).
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______ is like a language interpreter that converts the genetic message carried by ______ into the language of protein.
Answer:
ribosome
mRNA
Explanation:
The ribosome is like a language interpreter that converts the genetic message carried by mRNA into the language of protein.
Ribosomes are an essential organelle. It is crucial for the creation of protein, a chemical required for metabolism and growth. Protein is produced by the ribosomes for use inside and outside the cell.
What is the importance of ribosomes inside the cell?
A sophisticated macromolecular element of the organism that helps with translation is called a ribosome. To make proteins and a wide range of other biological components, all living cells need to perform this crucial process.
Ribosomes in eukaryotes contain roughly equal amounts of protein and rRNA. Typically, ribosomes include three or four rRNA molecules and between 40 and 80 distinct ribosomal proteins.
Two subunits, a larger and a smaller one, make up each ribosome, and each of them has a distinct form.
Therefore, ribosome functions as a kind of linguist, translating the genetic information carried by mRNA into the language of protein.
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If a child were born without a thymus gland, what cells and functions of the immune system would be deficient? Explain.
Fat mostly takes the place of the thymus. Due to their profound T cell deficiency and increased susceptibility to infections, children with congenital anthemia are born without a thymus.
What exactly is a thymus?Your lymphatic system includes a little gland called the thymus. Tonsils, spleen, and appendix are just a few of the organs, tissues, and channels that make up your lymphatic system. A component of your immune system is the lymphatic system. It supports immunity to sickness and infection.
What is the main function of thymus?The thymus is a vital organ for the immune system, which acts as the body's first line of defense, monitoring and protecting it from a variety of viruses, tumors, antigens, and mediators of tissue damage.
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calmodulin kinase ii attenuation of gene transcription by preventing camp response element-binding protein (creb) dimerization and binding of the creb-binding protein
Calmodulin kinase ii attenuation of gene transcription by preventing camp response a effects of kinases on the transcription of CRE-containing genes.
What are genes?The building block of genes is DNA. Some genes serve as protein synthesis blueprints. Many genes, however, do not code for proteins. Human genes range in size from a few hundred to over 2 million DNA bases. For instance, if both of your parents have green eyes, you may inherit the characteristic from them.
What are genes vs DNA?Genes are DNA segments that encode for a specific protein that functions in one or more types of cells in the body. Chromosomes are cell structures that store an individual's genes. Chromosomes, which are found in the cell nucleus, contain genes.
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the validity of research based on standard experimental procedures as opposed to claims that cannot be tested justify your inference
The validity of research based on standard experimental procedures as opposed to claims that cannot be tested because there is proof behind the results.
The scientific factors include questions related to endpoint selection, the only-size-suits-all criterion, and the want for a greater bendy approach, e.g., evaluation of the degree of similarity.
Clinical research is the neutral, systematic, deliberate, and a couple of-step process that makes use of previously observed information to improve expertise that doesn't exist in the literature.
Research is creative and systematic work undertaken to increase the stock of understanding. It entails the gathering, enterprise and evaluation of information to increase understanding of a subject or problem. A research task can be a spread on past paintings in the field.
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which of the following is an advantage of electron microscopy? choose one: a. specimens can be observed at high resolution. b. the microscope is inexpensive and easy to use. c. living specimens can be observed. d. motile specimens can be observed.
The advantage of electron microscopy is that specimens can be observed at high resolution. Option A
What is electron microscopy?A microscope is a device that is used to obtain a very high resolution image of a specimen. The specimen could be biological or non biological. Hence, a microscope is used in various areas of science.
The first microscope was invented by Robert Hooke and was used in the study of cells. The electron microscope is very useful in science because it can show the images of specimen at a high magnification.
Thus, the advantage of electron microscopy is that specimens can be observed at high resolution. Option A
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Basic growth media must be formulated to meet the diverse nutritional requirements of routinely cultivated bacteria, which includes supplying sources of ____________ and nitrogen in various forms. If these nutrients are supplied in the form of animal extracts like peptone or beef extract, the growth medium is termed a _______________ medium.
Basic growth media for bacterial growth should have sources of carbon and nitrogen. The growth medium is termed a complex medium if the supply of these nutrients is in the form of animal extract.
For the growth of bacteria and other microorganisms, nutrient-rich mediums are used such as agar plates and nutrient broths.
These mediums are of immense importance as they support the growth of bacteria on a wide scale.
The most common mediums are soy agar, brain heart infusion agar, and nutrient agar which are required widely for bacterial growth, cell culture, and microorganisms growth.
Furthermore, additional serums and blood are also added to enhance the capability of the basic growth media.
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A good question to use for a scientific investigation should be testable, and it should be connected to science concepts. Casey wants to do a scientific investigation about light. Which of the following questions would be best to use to guide his scientific investigation? A. What color of light is the prettiest? B. Which type of light bulb burns the longest? C. Which type of light bulb is easiest to catch? D. Which type of light bulb is preferred by moms?
Answer:
Explanation:
hjyf, fyju,ju
Answer:
C. which type of light bulb burns the longest
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1) Unscramble the parts of the
Respiratory System.
A) otinirs
B) nyxrahp
C) alrxny
D) gunl
E) bohcsunr
F) aipgamrhd
G) rbhcio
H) nocelihorb
I) alevoll
J) otuhm
K) rthceaa
Answer:
.
Explanation:
A) nostril
B) pharynx
C) larynx
D) lung
E) bronchus
F) diaphragm
G) bronchi
H) bronchiole
I) alveoli
J) mouth
K) trachea
A high level of ________ in the muscle fiber would slow glycolysis by inhibiting its rate limiting enzyme.
According to the research, the correct option is ATP. A high level of ATP in the muscle fiber would slow glycolysis by inhibiting its rate limiting enzyme.
What is glycolysis?It is a series of chemical reactions that cells use to obtain energy for different cellular processes.
In this sense, in this reaction ATP is required to provide energy for the process and phosphate to form the product, a high level of the same in the muscle fiber would slow this process, since it inhibits the enzyme; fructose-2,6-bisphosphate and is influenced by a combination of factors, including the availability of substrates, the concentration of regulatory enzymes and their activity levels, and the energy status of the muscle.
Therefore, we can conclude that according to the research, the correct option is ATP. A high level of ATP in the muscle fiber would slow glycolysis by inhibiting its rate limiting enzyme.
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How can a target cell's response to a single hormone molecule result in a response that affects a million other molecules?
A target cell's response to a single hormone molecule result in a response that affects a million other molecules is through cascade cell signal transduction.
This pattern is common in signal transduction circuits. Transmission is maintained by a series of metabolic changes within the cell or by modifying the cell membrane potential through ion migration in and out of the cell. Receptors that trigger biochemical changes can do so either directly through intrinsic enzymatic activity inside the receptor or indirectly through the activation of intracellular messenger molecules.
One ion or molecule may activate several molecules in the following phase of a cascade of consecutive activations at each step. This amplifies the response at each stage, resulting in a significant amplification of the original signal.
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