The capability of the kidney to sustain a healthy serum metabolic ph Bicarbonate (HCO3-).
Which blood number reflects how well the kidneys are able to maintain the right level of serum metabolic pH?
For each (H+) molecule produced into the renal tubular fluid during acid excretion, bicarbonate (HCO3-) is returned to the blood concurrently at the glomerulus.
How do the kidneys function to keep the blood's pH at a normal level?- The kidneys retain bicarbonate ions (HCO3-), which serve as an essential buffer for hydrogen ions (H+) in the blood, and expel a varying amount of hydrogen ions (H+) into the urine. These two actions assist in controlling blood pH.
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does each mitochondria contain thousands of electron transport chains true or false
Answer: True
Explanation: Mitochondria are large enough to be seen in the light microscope, and they were first identified during the nineteenth century. Real progress in understanding their function, however, depended on procedures developed in 1948 for isolating intact mitochondria. For technical reasons, many of these biochemical studies have been performed with mitochondria purified from liver; each liver cell contains 1000–2000 mitochondria, which in total occupy about one-fifth of the cell volume.
Can the typical behavior of bird populations change over time?
Answer: yes
Explanation: the birds would die off and they could keep reproducing
During the process of photosynthesis, solar energy is converted into chemical energy which is then used to build which kind of molecule?.
Answer: Carbohydrate molecules.
Explanation:
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules. The energy used to hold these molecules together is released when an organism breaks down food. Cells then use this energy to perform work, such as cellular respiration.
a smooth muscle preparation was bathed in the myosin light chain phosphatase inhibitor, ruthenium red (rur) and stimulated to contract while force development and intracellular calcium levels were monitored with fluorescent imaging techniques. what is the expected result?
Muscle relaxation during RuR application occurs more rapidly as compared to controls. Thus the correct answer is option: (C).
Smooth muscle cells are neurally innervated by the autonomic nervous system and lack the striated banding pattern present in cardiac and skeletal muscle. In addition, hormones, autocrine/paracrine substances, and other regional chemical signals regulate the contractile state of smooth muscle. When the load or length changes, smooth muscle cells also create tonic and phasic contractions. No matter what the stimulus, smooth muscle cells create force by cross-bridge cycling between actin and myosin, and calcium ions (Ca2+) help to start contraction.
The complete question is:
A smooth muscle preparation was bathed in the myosin light chain phosphatase inhibitor, ruthenium red (RuR), and stimulated to contract while force development and intracellular calcium levels were monitored with fluorescent imaging techniques. What is the expected result?
A. Stronger contraction at any given intracellular calcium level during RuR application as compared to controls.
B. Enhanced latch-bridge formation during RuR application as compared to controls.
C. Muscle relaxation during RuR application occurs more rapidly as compared to controls.
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Question 1 of 10
What are two examples of stem cells working in adult animals?
A. Cells divide to form the blastocyst and then the gastrula.
B. New nerve cells are produced to repair nervous tissue.
C. Germ layers develop into specialized cells and tissues.
D. Bone marrow produces new blood cells to fight disease.
Answer:B and D
Explanation just did the test
Stem cells serve as a source of fresh cells for the development or replacement of specialized tissues. These cells must divide to replenish themselves in order to carry out their role, and some of their offspring will eventually differentiate to form new tissues. Thus option B, D is correct.
What role stem cells working in adult animals?The embryo's stem cells divide as it grows and develops to create the various types of specialized cells it will require to create functional tissues and organs.
In order to regenerate and repair damaged tissues, adult stem cells are used. Findings: Adult stem cells can differentiate into a wide range of tissues and cell types in response to pathophysiological stimuli. They have been extracted from adult tissue, umbilical cord blood, and other non-embryonic sources.
Therefore, New nerve cells are produced to repair nervous tissue and Bone marrow produces new blood cells to fight disease.
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hy are some mutations of ras associated with cancer? ras alters ion flow across the cell membrane. ras is a type of second messenger. ras activates the map kinase signal transduction pathway that regulates cell division. ras binds to growth factor receptors.
Ras activates the MAP kinase signal transduction pathway.
The Ras/Raf/MAPK pathway is likely the most well-studied signaling pathway in cell biology. This pathway transports signals from the extracellular milieu to the cell nucleus, where specific genes are activated to promote cell growth, division, and differentiation.
Ras activates several pathways, including the RAF-MEK-ERK/MAPK cascade, which sends signals downstream and causes the transcription of genes involved in the control of various cellular mechanisms.
The binding of extracellular mitogen to a cell surface receptor initiates the MAPK/ERK pathway. This allows a Ras protein (a Small GTPase) to exchange a GDP molecule for a GTP molecule, flipping the pathway's "on/off switch."
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why do we use skulls to determine the number of mammals present in the owl pellet? why are other bones not used
The purpose of this laboratory is to examine the contents of owl pellets to infer the type and amount of food the owls ate. Barn owls are carnivorous birds that hunt, kill and eat other animals.
The easiest way to tell which small mammals have been eaten is to look for the mandible and "pair" the left and right jaws from each pellet. These pellets can provide valuable information about an owl's diet. By examining the contents of owl pellets, it is possible to discover differences in seasons, regions, habitats, and even individual differences in owls. Skulls and jawbones help identify eaten prey, as the bones usually do not break down throughout the process. also provide clues to the diet and hunting habits of owls. It also provides information. The relatively small amount of indigestible bone and fur that remains is compressed into pellets by stomach muscles, similar to owls.Eagle pellets will not be as useful as owl pellets. This is because there are fewer whole objects (feathers, bones, etc.) that can be used to identify what they ate.
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Neurexins are cell adhesion proteins that are important for connecting neurons at the synapse. Mammals have 3 neurexin genes. However, 2000 forms of neurexin proteins are found in cells where they play a role in determining synapse specificity. What mechanism most likely underlies this diversity?.
Alternative mRNA splicing is the mechanism associated with the diversity of isoforms of a given gene.
What is the cellular mechanism of alternative messenger RNA splicing?The cellular mechanism of alternative messenger RNA splicing refers to a processing step that suffers mRNA in order to maturate and then be used as template during the process of translation, which is fundamental to producing different proteins from distinct isoforms of a primary mRNA transcript sequence in a given cell.
Therefore, with this data, we can see that the cellular mechanism of alternative messenger RNA splicing is associated with the formation of different mRNA variants or isoforms in the primary mRNA transcript which may lead to the generation of distinct proteins and open the repertory of related proteins form a given particular gene sequence that contains three or more exons to be linked.
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dna is found in association with proteins within the cell. what is the term for this dna-protein complex?
This DNA-protein complicated is known as chromatin, in which the mass of protein and nucleic acid is almost equal. Within cells, chromatin typically folds into feature formations known as chromosomes.
Each chromosome incorporates a unmarried double-stranded piece of DNA along side the aforementioned packaging proteins. Chromatin is a complicated of DNA and proteins that paperwork chromosomes in the nucleus of eukaryotic cells. Nuclear DNA does now no longer seem in loose linear strands; it's far pretty condensed and wrapped round nuclear proteins so one can match within the nucleus.
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your colleague admits a client with active tuberculosis. since she has little experience with this disorder, she asks you for information about the signs and symptoms of active tb so she can monitor them. select the best reply.
The symptoms of active Tuberculosis include lethargy, night sweats, & low-grade fever. The right answers are A, D, and E.
The organism that causes tuberculosis is called Mycobacterium tuberculosis (TB). TB germs may harm the kidney, spine, and brain in addition to the lungs, which is where they usually assault. Not everyone exposed to TB bacteria becomes sick.
Common symptoms of TB illness include fatigue, feelings of sickness or weakness, weight loss, fever, and night sweats. Aside from coughing up debris and blood, other symptoms of TB lung disease include chest discomfort. The signs and symptoms of TB illness in various body areas depending on where the infection is located.
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The question is -
What signs and symptoms does the nurse anticipate finding in a patient diagnosed with tuberculosis? Select all that apply.
A. Lethargy
B. Dyspnea
C. Weight gain
D. Night sweats
E. Low-grade fever
20 POINTS!!! HELP QUICKLY PLEASE Genre, :Science:
Homeostasis is a ________ of an internal environment in an organism's body to remain in a ________ and balanced condition.
Responses
A.maintenance, stable
B.repair, higher
C.maintenance, higher
D.repair, stable
Homeostasis is a mantainance of an internal environment in an organism's body to remain in a stable and balanced condition (Option a).
What is the homeostasis state of the biological systems?The homeostasis state of the biological systems refers to a state of internal equilibrium which is reached in order to make possible both life and metabolic activities.
Therefore, with this data, we can see that the homeostasis state of the biological systems is fundamental to carrying out metabolic activities that otherwise we can not achieve in non-stable conditions.
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which of the following does not lead to an increase in phytoplankton reproduction? a. increased nutrient availability b. increased sunlight c. increased oxygen levels d. increased levels of carbon dioxide
Option (C) is correct i.e. increased oxygen levels does not lead to an increase in phytoplankton reproduction.
The autotrophic (self-feeding) phytoplankton constituents are a crucial component of freshwater and ocean ecosystems. Photosynthesis is how land plants, like trees and phytoplankton, get their energy. Phytoplankton lives on the highly lit surface layers (euphotic zone) of seas and lakes because they need sunlight to survive. Phytoplankton is more extensively distributed, less seasonal, and has noticeably higher turnover rates than trees as compared to terrestrial plants (days versus decades). As a result, phytoplankton reacts to climatic changes quickly and widely. Both freshwater and marine food webs are based on phytoplankton, which is also essential to the global carbon cycle. They generate at least 50% of the world's oxygen production and nearly 50% of the photosynthetic activity despite making up only about 1% of all plants' biomass. With photosynthesizing bacteria, algae that resemble plants, and coccolithophores with armor-like plates, phytoplankton is immensely diverse. The dinoflagellates, cyanobacteria, and diatoms are some of the most prominent phytoplankton species.
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Answer:
C) Increased oxygen levels
Explanation:
Which of the following is not a process in the scientific method?
A) belief in a preconceived idea
B) formulate a hypothesis
C) systematic observation
D) laboratory experimentation
E) development of a theory
A) belief in a preconceived idea
A) belief in a preconceived idea is not a process in the scientific method. Preconceived/prejudice notions are opinions you have about something before you have enough knowledge or experience to create one.
Preconceived concepts are opinions that are formed without any proof or evidence, often known as unconscious biases. Prejudices, preconceptions, and several other unconscious biases are examples. A preconceived view, judgment, or attitude toward some individuals based on their membership in a particular group is referred to as prejudice. It is a group of mentalities that encourage, promote, or defend discrimination. Hint, imply, insinuate, and intimate are some typical synonyms for the word "suggest." While all of these phrases have the same meaning "to express an idea indirectly suggest may emphasis placing into the mind through idea association, awakening of a desire, or starting a line of thought.
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Select the correct answer from each drop-down menu. a biologist discovered a new organism and classified it as a mollusk after studying its characteristics. as a mollusk, the animal probably has and a .
Mollusks are members of the phylum Mollusca. These animals have a soft, unsegmented body, an external or internal shell, bilateral symmetry, a tongue-like device called a radula, a mantle (a fold in the body wall that encloses the shell), a muscular foot, and a coelom, a hollow filled with fluid.
Therefore, "radula" and "mantle" are the right answers.
How would you characterize mollusks?A group of creatures known as molluscs have soft bodies that typically have a "head" and a "foot" region. Like the shells of snails and clams or the plates of chitons, their bodies frequently have a hard exoskeleton covering them.
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What is the most important reason a cell exhibits tight transcriptional control over the regulation of gene expression?.
For the cell, regulation at the transcriptional level saves energy.
Why is the regulation of transcription so crucial?A vital biological process called transcriptional regulation enables a cell or an organism to respond to a variety of intra- and extracellular inputs, to establish a cell's identity during development, to maintain it throughout its existence, and to coordinate cellular activity.
How does gene expression affect the regulation of transcriptional control?In particular, There are specifically two levels of control over gene expression. The amount of mRNA that can be produced from a particular gene is the first way transcription is controlled. The translation of mRNA into proteins is regulated by post-transcriptional processes, which constitute the second level of regulation.
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What will happen if you depress the plunger on a micropipette to the second stop before loading the tip?.
If you proceed to the second stop, too much liquid will be drawn into the tip. The most prevalent pipetting inaccuracy with micropipettes is failing to stop at the first stop, allowing too much liquid to enter the tip.
What is micropipette?A micropipette is a widely accepted yet indispensable laboratory instrument used to precisely and efficiently transfer microliter volumes of liquid. Micropipettes come in single-channel and multi-channel configurations.
Only press the plunger to the first stop when dispensing liquid into a well. Pressing the second stop will add bubbles to the well and may cause your sample to be displaced.
Remove the pipette tip from the buffer after dispensing your sample before releasing the plunger.
Thus, this can be the consequence if you depress the plunger on a micropipette to the second stop before loading the tip.
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10) when you eat brussels sprouts, what are you eating? a) immature flowers b) large axillary buds c) petioles d) storage leaves e) storage roots
A huge axillary bud is what you consume when you eat brussels sprouts.
After consuming brussel sprouts, what happens?
A diet rich in cruciferous vegetables, such as Brussels sprouts, may help prevent malignancies of the stomach, lung, kidneys, breast, bladder, or prostate.
Sprouts and other crinkly vegetables can be advantageous. a number of health issues, such as excessive blood pressure, high cholesterol, heart disease, or diabetes, are avoided.
Is it okay to eat Brussels sprouts every day?
Is it safe to eat Brussels sprouts every day? Yes, as long as they are consumed sparingly.
However, any dietary changes should be reviewed with a doctor.
Brussels sprouts, which are high in antioxidants, help to reduce oxidative stress on your cells.
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within a differentiated b cell, the activity of which molecule results in the rearrangement of dna sequences between variable regions and joining regions?
The complete answer is Recombinases are enzymes that catalyze site-specific recombination events within DNA, hence The answer is D) recombinase.
Recombinase A, a naturally occurring protein used in DNA repair, is a crucial component of the Escherichia coli (E. coli) genome's genetic stability. DNA-breaking strand exchanges between homologous segments and DNA ligases are all involved in DNA recombination activities. Recombinational DNA repair is another role for recombinases. Site-specific recombination involves cleavage and reunion, resulting in the integration, deletion, or inversion of a DNA fragment without gaining or losing nucleotides at a specified sequence or recognition site. The orientation of the recognition sites affects the mode of action, whether a DNA fragment is being integrated, deleted, or inverted.
The complete question is: Within a differentiated B cell, the rearrangement of DNA sequences between variable regions and joining regions is accomplished by a(n) __________.
A) RNA polymerase
B) reverse transcriptase
C) epitopase
D) recombinase
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the atp synthase beta subunit assumes 3 different distinct conformations within the protein complex. which conformation is expected to be present at the beginning of the catalytic cycle?
ATP synthase beta subunit assumes 3 distinct conformations within the protein complex, conformation that is expected to be present at the beginning of the catalytic cycle is : beta ADP.
What does beta ADP do in ATP synthase?ATP synthase consists of three α- and three β- subunits. All of them can bind nucleotides but only β-subunits can take part in the reactions. F₀ is a cylindrical structure that capable of rotation when driven by translocated protons and linked to a central stalk that can revolve inside F1.
The alpha- and beta-subunits of membrane-bound ATP synthase complex bind ATP and ADP where beta contributes to catalytic sites and alpha is involved in regulation of ATP synthase activity.
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A forensic scientist does a flame on a substance that was found at a crime scene. What might the scientist conclude if the flame turns green?.
The substances like Borax (sodium borate), Copper(II) sulfate, barium, and boric acid burn with a characteristic green flame.
A qualitative test called the flame test is used to identify the constituents of a combination. With the aid of a fine wire, the unidentified item or mixture is exposed to a flame (such as the flame of a Bunsen burner or a spirit lamp) in this procedure. It is mentioned what the hue of the flame is. The identification of metals with this test is sensitive. It also has the ability to discern between colors that are similar, allowing for reliable ingredient identification. This technique can also be used to detect impure chemicals.
Impurities could prevent the test from identifying the metal ions using this method, but the mixture is dipped in hydrochloric acid before being exposed to the flame. The similar flame colors of metal ions would present another challenge. The substances like Borax (sodium borate), Copper(II) sulfate, barium, and boric acid burn with a characteristic green flame.
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Part A:
Arrange the steps of transcription of DNA to synthesize mRNA. Rank the steps of transcription of DNA to synthesize mRNA.
1. DNA double helix unwinds to expose the nucleotide bases
2. RNA polymerase identifies the start sequence
3. RNA polymerase adds bases that are complementary to the DNA template
4. RNA polymerase identifies the termination sequence
5. mRNA strand and RNA polymerase are released
Rank the steps of transcription of DNA to synthesize mRNA.
1. DNA double helix unwinds to expose the nucleotide bases
2. RNA polymerase identifies the start sequence
3. RNA polymerase adds bases that are complementary to the DNA template
4. RNA polymerase identifies the termination sequence
5. mRNA strand and RNA polymerase are released
Transcription is the process by which the DNA sequence of a gene is replicated (transcribed) to produce an RNA molecule.The primary transcription enzyme is RNA polymerase.When RNA polymerase binds to a promoter sequence near the start of a gene, transcription begins.RNA polymerase uses one of the DNA strands (the template strand) as a template to create a new, complementary RNA molecule.Termination is the process by which transcription comes to an end. Termination is dependent on RNA sequences that signal that the transcript is complete.Learn more about transcription to visit this link
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How are organelles and cytoplasm passed from one generation to the next in humans?.
Actually, copies of the original organelles from the parent are transferred to the offspring. Extranuclear DNA is passed along in this manner.
How do humans pass on their genes to future generations?Through inherited chemical information units, genetic information is transmitted from one generation to the next (in most cases, genes). Through sexual reproduction, organisms create other creatures that are genetically identical to themselves, maintaining the genetic material's branch and connecting generations.
How is the cytoplasmic DNA passed down?Cytoplasmic genetic components are often inherited from the mother, while there are a few cases in which they are acquired from the father, from a second parent, or from both parents.
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Is thermal energy, or heat, transferred by conduction, convection, or radiation in a geyser?.
An illustration of the convection mode of heat transfer is the transmission of heat energy from an immersion water heater to water.
In a geyser, how is thermal energy transferred?Geysers heat water using heat from deep beneath. As the water warms, steam rises, pressure increases, and the geyser explodes. Humans first used geysers to capture geothermal energy to create hot bathwater.
A geyser uses what form of heat transfer?Convection is the chosen way because it causes matter particles to disperse or heat up and lose density. The bubbles in the geyser are brought on by this. Hot magma in the earth's mantle is transferring its heat to the sea.
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chegg assume an aneurysm has widened a blood vessel from a diameter of 1 cm to a diameter of 4 cm. what is the velocity v1 of blood flow in the region of the aneurysm relative to the velocity v0 in the healthy portion of the blood vessel.
According to the equation, the total pressure in the flow is equal to the sum of the static pressure (ps) and dynamic pressure (pd), which is equal to one-half of the density (r) times the velocity (V) squared.
This constant is known as the flow's overall pressure, or pt. According to Bernoulli's principle, which governs fluid dynamics, a fluid's speed increases concurrently with a reduction in pressure or potential energy. The mathematical concept is named after Swiss mathematician Daniel Bernoulli, who first published it in his book Hydrodynamics in 1738. The pressure difference between two measurements is denoted by the symbol P. This can be assessed at several points within a system or at various times/dates. The measurement can vary depending on the situation.
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based on whay you know about neuroendocrinology and stress, why is it common for peoopple t stress eat in respose to hallehgning systems
Based on neuroendocrinology and stress we observe that when you are stressed, your adrenal glands secrete hormone called cortisol. You might indeed observe an increase in appetite and an urge to eat sugary, salty, or fatty foods when this occurs.
Neuroendocrinology is the result of the relationship between the nervous system and the endocrine system, or how the brain regulates hormonal activity in the body. Thus, neuroendocrinology is the study of hormone-brain interactions, specifically how hormonal changes affect behavior.
Cortisol is a glucocorticoid hormone produced and released by your adrenal glands. Hormones are chemicals that help your body coordinate different functions by transporting signals through your blood to your organs, skin, muscles, and other tissues. These signals instruct your body regarding what to do and when. Cortisol is a steroid hormone produced and released by your adrenal glands, which are located on top of your kidneys. Cortisol influences several aspects of your body, primarily regulating your body's stress response.
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which of the following factors would increase the amount of oxygen discharged by hemoglobin to peripheral tis- sues? a. decreased temperature b. decreased ph c. increased tissue po2 d. none of the above
None of the above factors would increase the amount of oxygen discharged by hemoglobin to peripheral tissues.
Red blood cells in the blood carry 97% of the oxygen needed for breathing, with the remaining 3% dissolving in plasma. Red blood cells (RBCs) contain the pigment hemoglobin, which is responsible for the blood's red hue. Oxygen binds to hemoglobin to form oxyhemoglobin depending on the partial pressures of oxygen, carbon dioxide, H+ concentration, and temperature. A single hemoglobin molecule can transport up to 4 oxygen molecules. Low temperature, high H+ concentration, and oxygen partial pressure are the ideal conditions for oxyhemoglobin production. These requirements are met in the alveoli. However, conditions are different in the tissues, and as a result, oxygen is separated from oxyhemoglobin.
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which of the following are not signaling proteins that regulate interactions between cells? interleukins pyrogens complement proteins cytokine
Interleukin, pyrogen, complement protein and cytokines are signaling protein that regulate interactions between cells.
How cell communicate each other?To survive, every cell must able to monitor the environment and respond on external stimuli. This include communicate with another cells. The name of this cell communication is cell signaling.
In simply, the processes are as follow :
Detection of stimulus on the cell membrane —> transfer of the signal to cytoplasm —> transmission the signal to effector —> trigger a cell response (activation of gene transcription)
The type of signaling protein that involve in this process are:
Interleukins are group of cytokines that acts as a chemical signals between white blood cells. Interleukin regulates immune responses. Complement proteins are plasma protein mediator aid in the destruction of pathogen through cell lysis and also promote inflammation. Pyrogen is a protein released either from bacteria or virus or immune cells that capable to trigger raising in body temperature or fever.Learn more about cell signaling by clicking this link https://brainly.com/question/14412293
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At King's College in London, Rosalind Franklin and Maurice Wilkins were studying DNA. Wilkins and Franklin used X-ray diffraction as their main tool -- beaming X-rays through the molecule yielded a shadow picture of the molecule's structure, by how the X-rays bounced off its component parts.
Diffraction of X-rays Rosalind Franklin and Maurice Wilkins were conducting DNA research at King's College in London.
Wilkins and Franklin's primary method was X-ray diffraction, which produced a shadow image of the molecule's structure based on how the X-rays rebounded off its constituent components after passing through the molecule.
The crucial piece of information that DNA has a double helix shape was revealed by Rosalind Franklin's X-ray diffraction patterns of DNA molecules.
James Watson, Francis Crick, and Maurice Wilkins shared the 1962 Nobel Prize in Physiology or Medicine for discovering the structure of DNA. Rosalind Franklin, whose X-ray images of DNA directly led to the discovery of the double helix, was conspicuously absent from the platform.
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when studying the brains of our fossil relatives, why do we rely on indirect evidence (cranial capacity) instead of direct evidence (brain tissue)?
This is true that we rely on indirect evidence (cranial capacity) rather than direct evidence when studying the brains of our fossil relatives.
Cranial capacity is the book of the interior of the skull of vertebrates that possess a skull and a mind (1). Cranial capacity is used to approximate the capacity of the intellect, which is still dirty from the data of the animal (1). Cranial capacity is often proven by the contents of the cranial crater accompanying cup beads and weighing their capacity, or by CT scan image.
Fossils are the maintained debris of plants and animals whose bulks were engrossed in sediments, to a degree soil and mud, under old seas, reservoirs, and waterways. Fossils further involve any continued trace of history namely usually in addition to 10 000 years traditional.
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Which phrase gives two processes scientists think move the earth's lithospheric plates?.
The "ridge push" and "slab pull" gravity forces are two mechanisms that scientists believe shift the earth's lithospheric plates.
What is the lithospheric plate motion theory?The lithosphere, the planet's outer shell, is said to be divided into a number of plates that move across the planet's rocky interior and on top of its soft core, according to the theory of plate tectonics. The Earth's plates act like a solid, rigid shell, in contrast to the mantle.
What are the two main hypotheses behind plate motion?We shall now combine the concepts of continental drift and seafloor spreading into the theory of plate tectonics, much like the scientists who came before us. Watch this video to learn how plate tectonics is created through the mechanics of seafloor spreading and continental drift.
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