Like a jigsaw puzzle, put the continents together one piece at a time. When the "game" is finished, cut and rearrange the pieces to create a new image.
What is tectonic plate?According to the widely recognised scientific hypothesis of plate tectonics, the Earth's lithosphere is made up of several major tectonic plates.
A technique by which a scientist might improve their model of the tectonic plates of Earth.
University of Adelaide's Derrick Hasterok When the "game" was finished, the continents were chopped and reassembled to create a new image. "The continents were pieced together a few pieces at a time, like a jigsaw puzzle."
This knowledge leads us to the conclusion that the continents should be put together one piece at a time, much like a jigsaw puzzle, but after the "game" is finished, it should be cut and rearranged to create a new picture.
Thus, these are some shortcomings of using this model as a replicable of the Earth.
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During the gram stain procedure, which of the following reagents represents the first step in the gram stain when the gram negative cells react differently than gram positive cells
A. preparation of the smear on the slide.
B. Crystal violet
C. Iodine
D. Acetone alcohol
E. Safranin
During the gram stain procedure, the reagent that represents the first step in the gram stain when the gram negative cells react differently than gram positive cells is Crystal violet. The correct answer is B.
The Gram stain is a laboratory technique used to differentiate between different types of bacteria based on the properties of their cell walls.
In the Gram stain procedure, a bacterial sample is first treated with crystal violet, which binds to the cell wall of both gram positive and gram negative bacteria.
The sample is then washed with iodine, which helps to fix the crystal violet in place and provide a contrast against the background.
After the iodine treatment, the sample is washed with acetone alcohol, which causes gram negative bacteria to lose the crystal violet and take up the red counterstain, safranin.
Gram positive bacteria, however, retain the crystal violet and appear blue or purple under the microscope. Thus, the different staining patterns of gram positive and gram negative bacteria can be used to identify the type of bacteria present in the sample.
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Which of the following statements regarding Darwin's theory of adaptation by natural selection are accurate?
A. advantageous traits are passed from parents to offspring
B. organisms must compete for resources with other members of their population
C. populations are made up of individuals that are exactly alike
D. all environments have an infinite ability to support increasing populations
E. if it can survive in a given environment, an organism is evolutionarily successful
The correct statements regarding Darwin's theory of adaptation by natural selection are:
A. advantageous traits are passed from parents to offspring
B. organisms must compete for resources with other members of their population
E. if it can survive in a given environment, an organism is evolutionarily successful.
A. Darwin's theory of evolution by natural selection states that beneficial traits that help an organism survive and reproduce are more likely to be passed on to future generations. This process, known as natural selection, leads to the evolution of species over time.
B. Competition for resources is a key aspect of Darwin's theory of evolution by natural selection. Organisms must compete for limited resources such as food, water, and mates with other members of their population. Those that are best adapted to the environment and can most effectively compete for resources are more likely to survive and pass on their traits to future generations.
E. Evolutionary success in Darwin's theory of evolution by natural selection is determined by an organism's ability to survive and reproduce in its environment. If an organism is able to survive and pass on its traits to offspring, it is considered evolutionarily successful, even if it is not the most fit organism in its environment.
C. Darwin's theory of evolution by natural selection does not state that populations are made up of individuals that are exactly alike. In fact, genetic variation within a population is an important factor in evolution by natural selection, as it provides the raw material for natural selection to act upon.
D. Darwin's theory of evolution by natural selection does not state that all environments have an infinite ability to support increasing populations. In fact, populations are limited by their environments, and those that grow beyond the carrying capacity of the environment will experience increased competition for resources and a decrease in population size.
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The elastic structures of muscle and tendons, called the _____ ______ ______, must be pulled tight before a muscle contraction can result in shortening.
Elastic Series Component. Because they are slightly elastic and in series (in line) with the force of muscle contraction, tendon supply what is known as a series-elastic component.
What hurts when a muscle is pulled?
A strain occurs when a muscle is overextended to the point of tearing. Another name for it is a pulled muscle. A strain is a hurt that hurts. When a muscle contracts, the series-elastic component helps to relieve part of the stress; however, this component must be pushed tightly in order for the muscle to shorten.
What is the name of the elastic muscle tissue?
The epimysium, a sheath of connective tissue, encases each muscle.
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What is metabolism?
the chemical reactions that take place in living organisms to provide energy and sustain growth
the chemical processes that take place in living organisms to break down food into glucose
the physical processes that take place in living organisms to burn glucose to power the motion of muscles
the physical processes that take place in living organisms to take in oxygen and bring it to cells
Answer:
The physical processes that take place in the living organisms to take in oxygen and bring it to the cell.
Put the following in order to describe the flow of a blood cell through the pulmonary circuit. Start with the first vessel the blood enters as it leaves the right ventricle.
Pulmonary trunk
Pulmonary arteries
Lobar arteries
Alveolar capillaries
Pulmonary veins
Left atrium
Explanation:
Right ventricle → Pulmonary trunk → Pulmonary arteries → Lobar arteries → Alveolar capillaries → Pulmonary veins → Left atrium
enzymes in pancreas..
Answer:
pancreatic enzymes.....
Which molecule is the monomer used to build polypeptides or protein polymers? Draw this molecule and label all five parts.
Despite the diversity, cells resemble each other to an astonishing degree in their chemistry. For example, the same 20 ________ __________ are used to make proteins.
Despite the diversity, cells resemble each other to an astonishing degree in their chemistry. For example, the same 20 amino acids are used to make proteins.
What is a cell?A cell is the basic unit of life. It is the smallest unit of an organism that can perform all the basic functions necessary for life. All living organisms are made up of one or more cells, and the study of cells is called cell biology. Cells come in a variety of shapes and sizes, but all cells have several key features in common, including a plasma membrane that encloses the cell, genetic material in the form of DNA, and the ability to produce energy and carry out metabolic processes. Some cells are simple and single-celled, while others are complex and made up of many specialized cells that work together as tissues and organs to perform specific functions.
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Which of the following is an example of demonstrative evidence?
Gun
Fingerprint
Handwritten note
Model of crime scene
Answer: Model of crime scene
Explanation:
According to Hardy-Weinberg principal, if p and q are unchanging, the population is in equilibrium. Which of the following is NOT a requirement for the population to maintain this equilibrium?
Question 16 options:
the population must not have any natural selection
there must not be any mutations in the gene pool
the population must be small
the population must have random mating
Explanation:
The population must not have any natural selection is NOT a requirement for the population to maintain equilibrium according to Hardy-Weinberg principal. The Hardy-Weinberg principal states that a population will remain in genetic equilibrium as long as certain conditions are met, which include no mutations, random mating, a large population size, and no gene flow. Natural selection is not one of the conditions for the population to remain in equilibrium according to Hardy-Weinberg principle.
relate how the repetitive polymerization of monomers into polymers can yield macromolecules with diverse properties and functions.
The repetitive polymerization of the monomers to form the polymers which can yield macromolecules with the diverse properties and functions and this can be done by varying the sequence of the subunits, the cell can make a diversity of different polymeric molecules.
Monomers are basically the basic structural units of the polymers. Monomers undergo polymerization to form complex structures which are known as the polymers. These monomers can be completely identical or can be of different types.
Different types of macromolecules exhibiting diverse structural organization as well as functions can be obtained by changing the sequence as well as type of subunits which are polymerizing.
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a signal travels down an axon and then encounters an excitatory synapse. compare the frequency of action potentials in the presynaptic neuron and the postsynaptic neuron (assume all other factors are the same)
In comparison to action potentials on presynaptic neurons, post synaptic neurons will experience action potentials less frequently.
What distinguishes post synaptic potentials from action potentials?So, action potentials require activation of voltage-gated ion channels found at very high concentrations along the axon hillock and at lower concentrations along the remaining of the axon, whereas postsynaptic potentials require activation of ligand-gated ion channels located on the postsynaptic membrane.
Pre- or postsynaptic action potentials are present?The synaptic cleft, which is a 20–40 nm gap between the presynaptic axon terminal and the postsynaptic dendrite, is where neurotransmitter is released from the neuron when an action potential reaches the presynaptic terminal (often a spine).
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Determine whether the statement is true or false, and why. "It is impossible for any two people to have the same genetic fingerprint."
A. False, it should read "While it is not impossible for two people to have the same genetic fingerprint, it is very unlikely."
B. False, it should read "It is impossible for two people to have the same genetic fingerprint, but it is not difficult for someone to make a fake one."
C. True
D. False, it should read "It is possible for two people to have the same genetic fingerprint, it occurs frequently, and there must be other evidence in order to convict someone."
False; it should say "There must be other information in favor to convict anyone." It is conceivable for two persons to have the same findings support the hypothesis, and it happens frequently.
What three sorts of fingerprints are there?However every fingerprint is unique, they always fall into one of three main categories: its whorl, which resembles a whirlpool, loop loop, which resembles a teardrop, and the arch, which resembles a pass of a hill.
Explain what a fingerprint is?The sinusoidal grooves on the tips of the hands and toes leave a fingerprint impression. Since each person's finger has a different pattern of ridges that does not change with age or growing, fingerprints provide an unfailing method of identity documents.
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Teach a child
How would you explain the following to a child?
1) Neurons
2) Peripheral Nervous System
3) Central Nervous System
4) Endocrine System
Answer:
Explanation:
Neurons:
Neurons are special cells in our body that help us to think, feel, and move. They are like tiny messengers that send signals to our brain to tell us what is happening in our body or around us. They are very important for us to learn new things, remember old things, and feel emotions.
Peripheral Nervous System:
The peripheral nervous system is like a big network of roads that connect different parts of our body to our brain and spinal cord. It is made up of nerves that carry messages back and forth between the brain and the rest of the body. It helps us to sense things like touch, pain, temperature, and pressure.
Central Nervous System:
The central nervous system is like the control center of our body. It includes our brain and spinal cord, which are the main parts of our nervous system. Our brain helps us to think, learn, and feel emotions, and our spinal cord helps us to move and feel sensations. Together, they work to help us control our body and respond to the world around us.
Endocrine System:
The endocrine system is like a group of messengers that help our body to communicate and work properly. It is made up of different glands in our body, such as the thyroid gland, adrenal gland, and pancreas, which produce hormones. Hormones are like special chemicals that travel through our blood to different parts of our body and help to control things like growth, metabolism, and reproduction. They work with our nervous system to help our body stay healthy and balanced.
Table 1 shows the stage and number of cells and chromosomes per cell at the end of the stage in a 2n=24 organism.Table 1. Cell and chromosome count during selected phases of meiosisStage: Number of Cells: Number of Chromosomes per Cell:Prophase I 1 24Metaphase I 1 24Anaphase I 1 24Telophase I 1 24Beginning of Prophase II 2 12Which of the following statements correctly describes the chromosomes in each daughter cell at the end of meiosis I?A) Each daughter cell contains 12 chromatids. Each chromatid is one of two from a single chromosome with the other one of the pair found in the other daughter cell.B) Each daughter cell contains 12 chromosomes, each composed of two chromatids. Since the chromosomes were randomly divided, one daughter cell may contain both of a pair of homologous chromosomes, while the other cell contains both of another pair of homologous chromosomes.C) Each daughter cell contains 12 chromosomes, each composed of two chromatids. Each chromosome is one of a pair of homologous chromosomes from the parent cell, with the other homologue found in the other daughter cell.D) Each daughter cell contains 24 separate chromatids. Since every two chromatids were originally joined, forming one homologous chromosome, the number of chromatids is divided by two to determine the number of chromosomes.
The following statement correctly describes the chromosomes in each daughter cell at the end of meiosis I: Each daughter cell contains 12 chromosomes, each composed of two chromatids. Each chromosome is one of a pair of homologous chromosomes from the parent cell, with the other homologue found in the other daughter cell.
Thus, the correct option is C.
Meiosis I is а type of cell division in which diploid pаrent cell give rise to four hаploid dаughter cells. The meiotic division is а chаrаcteristic of germ cells. Some of the chаrаcteristics of meiosis I аre:
The pаrent cell divides twice to give rise to four hаploid dаughter cells.The number of chromosomes in dаughter cells аre hаlf of the pаrent cell. Meiotic division tаkes plаce in reproductive cells.The dаughter cells consist of 12 chromosomes thаt аre composed of two chromаtids. The chromosome in the dаughter cell is а pаir of homologous chromosome from the pаrent cell. the other homologue is found in the other dаughter cell.
Your question is incomplete, but most probably your full question can be seen in the Attachment.
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The field of PNI is most broadly concerned with how the psychological, neural, and endocrine systems together affect the
A. Reproductive system.
B. Cardiovascular system.
C. Immune system.
D. Respiratory system.
The field of PNI is most broadly concerned with how the psychological, neural, and endocrine systems together affect the immune system.
Thus, the correct option is C.
Psychoneuroimmunologists’ аreа of study, cаlled psychoneuroimmunology (or PNI for short), is а highly integrаtive field thаt exаmines how psychologicаl, neurаl, аnd immunologic processes influence eаch other аnd shаpe humаn heаlth аnd behаvior. Using а vаriety of different in vivo, in situ, аnd in vitro techniques in both humаn аnd аnimаl model system, PNI hаs yielded numerous discoveries thаt hаve helped to greаtly clаrify how sociаl, psychologicаl, аnd behаviorаl fаctors influence the аctivity of the immune system; how the immune system аffects cognition, emotion, neurаl processes, аnd behаvior; аnd how these bidirectionаl interаctions shаpe risk for а vаriety of mentаl аnd physicаl heаlth problems, including аnxiety disorders, depression, posttrаumаtic stress disorder (PTSD), cаrdiovаsculаr diseаse, chronic pаin, certаin cаncers, аnd neurodegenerаtion.
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Describe the role of each of the following in DNA replication:a. DNA polymerase Ib. DNA polymerase IIIc. Gyrase (topoisomerase)d. Helicasee. Initiator protein (origin recognition complex)f. Ligaseg. Okazaki fragmentsh. Origin of replicationi. Primasej. Single-strand binding protein
DNA polymerases, which sequentially add nucleotides to the growing DNA chain while only integrating those that are complementary to the template, are responsible for the production of DNA.
What part does DNA polymerase play in the replication of DNA?The primary role of DNA polymerases is to preserve the genome and guarantee that the genetic code is reliably transmitted from one generation to the next.
What two functions does DNA polymerase provide in a cell?Normal replication and repair are two major categories under which they offer polymerase activity. DNA polymerase uses its 3′–5′ exonuclease activity to fix mistakes during normal replication.
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Which of the following double stranded DNA molecules would maintain its double helical structure longer as temperature increases?A. A DNA molecule that has more guanine and cytosine nucleotidesB. Both DNA molecules would be equally stable under conditions of increasing temperatureC. A DNA molecule that has more adenine and thymine nucleotides
A. A DNA molecule that has more guanine and cytosine nucleotides of the following double stranded DNA molecules would maintain its double helical structure longer as temperature increases
Which DNA double helix bonds are the strongest?A-T base pairings contain two hydrogen bonds, compared to three for G-C base pairs. As a result, double-stranded DNA with more G-C base pairs will be stronger and more stable, and it will also have a higher melting point.
Van der Waals forces, hydrogen bonds between complementary organic bases (a base pair), and hydrophobic interactions between the nitrogenous bases and the surrounding water sheath all support the shape of the DNA helix.
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which of the following is a disease in which the walls of the ventricles of the heart are markedly thickened?
Hypertrophic cardiomyopathy is a disease in which the walls of the ventricles of the heart are markedly thickened.
Hypertrophic cardiomyopathy, abbreviated as HCM, is a complicated form of cardiac disease that manifests itself in abnormalities of the heart muscle. It may result in:
A thickening of the muscle in your heart (especially the ventricles or lower heart chambers).
Left ventricular stiffness.
Mitral valve changes.
Cellular alterations.
This most frequently happens near the septum of your nose. The muscular wall that separates the left side of your heart from the right side of the heart is called the septum. When the septum that separates your heart's lower chambers, known as ventricles, becomes thicker, it can cause a number of problems.
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Option A. Hypertrophic Cardiomyopathy (HCM) is a genetic disorder in which the walls of the heart ventricles become abnormally thickened.
This thickening can cause the heart to become less efficient at pumping blood throughout the body, leading to symptoms such as:
Shortness of breathChest painDizzinessIrregular heartbeatsEven sudden deathHCM is a chronic condition that typically has no cure and requires lifelong management. Treatment may include medications to reduce the thickness of the heart walls, surgery to reduce obstruction in the heart, or implantable devices to regulate the heart rate.
Patients with HCM are advised to seek regular medical care to monitor their condition and to follow a healthy lifestyle.
Here's the full task:
Which of the following is a disease in which the walls of the ventricles of the heart are markedly thickened?
Choose the right option:
A. Hypertrophic Cardiomyopathy.B. Atrial Fibrillation.C. Congestive Heart Failure.D. Dilated Cardiomyopathy.Learn more about cardiopulmonary diseases: https://brainly.com/question/11656801
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use the information you learned from the dna microarray to write an argument to convince smokers to stop smoking. be sure to reference any differences you saw in gene expression in smokers and nonsmokers studied in the experiment
Smoking is a dangerous habit that can lead to serious health problems The results of DNA microarray experiments that have been conducted to study the differences in gene expression between smokers and non-smokers.
The results of these experiments clearly show that smoking has a significant impact on gene expression, leading to numerous changes in the body that can increase the risk of disease.
In the experiments, researchers found that there were hundreds of genes that were differentially expressed in smokers compared to non-smokers. This suggests that smoking causes widespread changes in the body at the molecular level, affecting not only the lungs but also other organs and systems. The results also showed that many of the genes affected by smoking play a role in processes such as inflammation, oxidative stress, and cell death, which can increase the risk of diseases such as cancer, heart disease, and lung disease.
In addition to these health risks, the results of the DNA microarray experiments also demonstrate the long-term effects of smoking on gene expression. Even after quitting smoking,
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Consider a sound wave produced by a tuning fork. Through which materials would the sound travel the fastest? Order the materials shown according to the speed at which a sound wave would travel through them, from slowest to fastest.
(Hot air, cold air, glass, the ocean)
Slowest sound travel material:___
Slower sound travel material:___
Faster sound travel material:___
Fastest sound travel material:___
1. Cold air
2. Hot air
3. Ocean
4. Glass
What is starch and it's significance?
Starch is a carbohydrate and a natural component of most plants, including fruits, vegetables, and grains. Starchy foods are an essential part of a balanced diet, as they provide energy, fiber, and a sense of fullness. The body breaks down starch molecules into glucose, which is the body's primary fuel source.
Answer:
Starch is made up of long chains of sugar molecules that are connected together. Starch's primary role is to help plants store energy. In an animal's diet, starch is a source of sugar. Amylase, an enzyme contained in saliva and the pancreas that breaks down starch for energy, is used by animals to break down starch.
Explanation:
In the photo, the mother is looking at a thermometer to determine if her child has a fever or not. a fever is a measurable sign. symptoms are not measurable and are only observed and felt by the patient. which of the following would be a symptom?
A. rash
B. white blood cell count.
C. headache
D. runny nose
In the photo, the mother is looking at a thermometer to determine if her child has a fever or not. a fever is a measurable sign. symptoms are not measurable and are only observed and felt by the patient. which of the following would be a symptom. The following would be a symptom is C. headache.
A thermometer is a tool used to measure hot or cold temperatures. In the medical world, a thermometer is used to measure body temperature to find out if someone has a fever or not.
Fever is a condition in which the body experiences an increase in temperature above 38 degrees Celsius. This usually occurs when a child has a disease and the body responds to the infection. The child's body temperature can be measured with a thermometer. In addition to measurable symptoms, a person who has a fever usually also experiences unmeasurable symptoms that only the child can feel, such as a headache. Headaches are caused by the pain nerves in the head becoming active due to the activity of chemicals in the brain or disturbances in the blood vessels in the brain because a person is having an infection.
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Color vision has much greater resolution than night vision (vision that is mostly in shades of gray). Which of the following is the best explanation for why this is so? Select one: a. A single cone photoreceptor often connects to a single bipolar cell and a single ganglion cell while as many as 100 rods will converge to a single ganglion cell. b. There are several types of cone photoreceptors, each of which enrich the clarity and resolution of vision. c. A larger proportion of the brain's visual cortex is active during the day when our cone photo receptors are most active. d. There are many more cone photoreceptors in the eye than rod photoreceptors.
A) In contrast to the convergence of up to 100 rod photoreceptors into a single ganglion cell, a single cone photoreceptor frequently connects to a single bipolar cell and a single ganglion cell.
Why does a human's night vision primarily consist of grayscale rather than color?Rods and cones are the two categories of photoreceptors that are involved in sight. Rods function in extremely dim lighting. Because just a small number of light particles (photons) may trigger a rod, we employ these for night vision. Because rods hinder color vision, we experience a grayscale world at night.
Do those with color vision have better night vision?The three cone types are activated in varied combinations to produce color perception. Compared to night vision, color vision has far higher resolution (vision that is mostly in shades of gray).
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true/false. contrast hydrogen bonds, electrostatic attractions, van der waal's attractions, and the hydrophobic force in terms of how and when they form and the role they play in cell biology.
False. Hydrogen bonds form between a positively charged hydrogen atom and a negatively charged atom of nitrogen, oxygen, or fluorine, and play a role in maintaining the three-dimensional structure of biomolecules such as DNA and proteins .
Electrostatic attractions form between positive and negative ions, and play a role in maintaining the stability of ionic bonds in salts and other charged molecules.
Van der Waals attractions form between non-polar molecules as a result of temporary fluctuations in electron distribution, and play a role in the interaction between lipids and other biological molecules.
The hydrophobic force forms between non-polar molecules in an aqueous environment, causing them to group together and exclude water. This plays a role in the formation of cellular membranes and the partitioning of lipids and other hydrophobic molecules in cells.
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In which of the following scenarios would evolution most likely occur?
Question 13 options:
a hawk prefers tan colored mice over dark gray mice
a breed of dog can have three different alleles for fur color
within a small population of skunks, two die of disease
within a large population of fish, one is caught by a fisherman
How does natural selection impact competition?
Answer:
it decreases competition
Explanation:
for example, if there are too types of lizards in an area both competing for the same bugs but one breed of lizard can be more easily seen by predators, then those lizards are gonna get eaten, leaving the other lizard breed less competition for food
DNA and RNA are structurally similar in some ways, but different in others. Identify whether each of the following statements applies to DNA, RNA, both or neither.Please do not give me the answers from other Chegg's question because my question is different from them
DNA and RNA are structurally similar in some ways, but different in others the answers are 1. both, 2. RNA, 3. DNA, 4. neither, 5. RNA, 6. both, 7. DNA, 8. neither.
1. both
Nitrogen bases with the primary structural components purine and pyrimidine are found in DNA and RNA.Adenine, Thymine, Cytosine, and Guanine are the four nitrogen bases found in DNA.RNA has four nitrogen bases as well. Uracil is present in RNA in place of thymine.Purine bases include adenine (A) and guanine (G). Pyrimidine bases include cytosine (C), thymine (T), and uracil (U).2. RNA
RNA has four nitrogen bases as well. Uracil is present in RNA in place of thymine.
3. DNA
DNA (Deoxyribonucleic Acid), as its name implies, comprises the sugar deoxyribose.
neither 4.
The percentages of thymine and guanine are not equal in DNA or RNA.
5. RNA
RNA (ribonucleic acid), as its name implies, comprises the sugar ribose.
6. both
The nucleotides are joined to sugar in a beta-N-glycosidic bond in both DNA and RNA.
7. DNA
There are an equal number of purine and pyrimidine nucleotides in DNA.
neither 8.
Sugars are linked together in DNA or RNA by 3'–5'phosphodiester links .
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What is self fertilization?
Self fertilization is the merging of gametes (sex cells) produced by the same person that is male and female.
Self fertilization is the process by which male and female gametes (sex cells) produced by the same individual fuse together to form fertile offspring. It is possible for bisexual creatures, such as the majority of flowering plants, numerous protozoans, and a great number of invertebrates, to fertilize themselves.
There are a variety of plants, including orchids, peas, sunflowers, and tridax, that have the ability to pollinate themselves. The vast majority of plants that are capable of self-pollination have relatively unnoticeable blooms that deposit pollen directly onto the stigma just prior to the bud opening.
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Why are bacteria and viruses considered immortal
Answer:
Bacteria and viruses are considered immortal because they reproduce and multiply very rapidly. Bacteria can divide into two identical daughter cells in as little as 20 minutes. Viruses can replicate by hijacking a host cell's metabolic machinery and creating multiple copies of themselves, which can then infect other cells. This rapid reproductive rate and lack of aging mechanisms means that bacteria and viruses can continue to reproduce indefinitely, making them "immortal" in a sense. However, bacteria and viruses can still be killed by antibiotics, antivirals, or host immune responses, so they are not truly immortal.