Answer: Gametes develop in the multicellular haploid gametophyte (from the Greek phyton, “plant”). Fertilization gives rise to a multicellular diploid sporophyte, which produces haploid spores via meiosis.
Explanation: This type of life cycle is called a haplodiplontic life cycle
Answer:
In the evolution of plants, the sporophyte generation has become increasingly dominant over the gametophyte generation. In bryophytes, the sporophyte is called a sporogonium and is nutritionally dependent on its gametophyte.
Explanation:
In the life cycle of plants, there are two alternating generations: the sporophyte and the gametophyte. The sporophyte generation produces spores, while the gametophyte generation produces gametes (sperm and eggs). Over time, the sporophyte generation has become more dominant in many plant groups. For example, in bryophytes (mosses and their relatives), the sporophyte is a small structure that grows on top of the larger gametophyte. The sporophyte is nutritionally dependent on the gametophyte and produces spores that will grow into new gametophytes.
Which hormone is produced by somatotrophs in the anterior pituitary and causes target cells in the liver and skeletal muscle to increase their synthesis of insulin-like growth factors?
The hormone produced by somatotrophs in the anterior pituitary that causes target cells in the liver and skeletal muscle to increase their synthesis of insulin-like growth factors is called growth hormone (GH). Growth hormone (GH), also known as somatotropin, is a peptide hormone produced and secreted by somatotrophs in the anterior pituitary gland.
It plays a crucial role in stimulating the growth and reproduction of cells in humans and other animals. When GH is released into the bloodstream, it binds to receptors on target cells in the liver and skeletal muscle, which then increases the synthesis of insulin-like growth factors (IGFs). These IGFs are responsible for promoting cell division and proliferation, as well as enhancing protein synthesis and the uptake of glucose and amino acids in cells. This leads to overall growth and development of the body, particularly during childhood and adolescence.
The hormone produced by somatotrophs in the anterior pituitary is Growth Hormone (GH).
Growth Hormone (GH), also known as somatotropin, is produced by somatotroph cells in the anterior pituitary gland. It stimulates the liver and skeletal muscles to increase their synthesis of insulin-like growth factors (IGFs), specifically IGF-1. These IGFs, in turn, promote cell growth, division, and differentiation in various tissues. GH plays a crucial role in growth, body composition, and metabolism regulation, and it affects the function of multiple organs, including bones, muscles, and the liver.
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when birds choose to lay their eggs in other birds nests instead of creating their own, what is occurring?
When birds choose to lay their eggs in other birds' nests instead of creating their own, what is occurring is known as brood parasitism.
This behavior is most commonly observed in cuckoos and cowbirds, who lay their eggs in the nests of other bird species. By doing so, they avoid the energy and resource costs associated with building their own nests and raising their own young. However, this behavior can have negative impacts on the host bird's own offspring, as the brood parasite's chicks may outcompete or even kill the host's chicks.
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HELP
What physical structure helps reduce water loss in a plant?
Pistil
Stamen
Waxy covering
Woody stem
Answer:
Waxy covering
Explanation:
also known as cuticle
The antimicrobial effects of AMPs include all of the following EXCEPT
A) inhibition of cell wall synthesis.
B) lysis of bacterial cells.
C) destruction of nucleic acids.
D) pore formation in bacterial membranes.
E) inhibition of phagocytosis.
AMPs are a diverse group of small peptides that have a broad spectrum of antimicrobial activity against bacteria, fungi, viruses, and parasites. They exert their antimicrobial effects by a variety of mechanisms, including disruption of the bacterial cell membrane, formation of pores in the membrane, inhibition of cell wall synthesis, and destruction of nucleic acids.Inhibition of phagocytosis is not a mechanism of action for AMPs. Phagocytosis is a process by which immune cells engulf and destroy invading microorganisms, and it is not a target of AMPs.
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Define sensory memory and the three main types that may be discussed on the MCAT. is it long term or short term? Where are these memories maintained in the brain?
What is the difference between whole report and half report
Answer:
Sensory memories are stored for a few seconds at most. They come from the five senses: hearing, vision, touch, smell, and taste. They are stored only for as long as the sense is being stimulated. They are then reprocessed and associated with a memory that may store in your short-term memory.
Explanation:
place in order the expected appearance of each hominin feature according to owen lovejoy’s provisioning hypothesis.
According to Owen Lovejoy's provisioning hypothesis, the expected appearance of each hominin feature in order would be Bipedalism, Reduction in canine size, Expansion of brain size, Tool use and speech.
Bipedalism - The ability to walk on two legs is thought to have evolved first in hominins as it freed up their hands for carrying food back to their group.
Reduction in canine size - With the evolution of bipedalism, hominins likely became more reliant on social cooperation and communication, leading to a decrease in the size of their canine teeth.
Expansion of brain size - As hominins became more reliant on social cooperation and communication, their brain size increased, allowing them to develop more complex social relationships and better problem-solving abilities.
Tool use - With the expansion of brain size, hominins developed the ability to create and use tools, which allowed them to access new food sources and better defend themselves.
Speech - With the further expansion of brain size and the development of more complex social relationships, hominins eventually developed the ability to use language to communicate with one another, allowing for even more complex social interactions.
So, the expected appearance of each hominin feature according to Owen Lovejoy's provisioning hypothesis would be: bipedalism, reduction in canine size, expansion of brain size, tool use, and speech.
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is the variety of species present on this planet. is the ultimate source of species diversity and occurs over time as organisms respond to changes in the environment. the rate of speciation and the rate of shapes the patterns of diversity on planet earth. the process of speciation is generally a very process, often taking millions of years to occur completely. if the rate of species loss is the rate of speciation, then there is a general of
If the rate of species loss is the rate of speciation, then there is general biodiversity on the planet. However, human activities such as habitat destruction, pollution, and climate change are currently causing a rapid decline in the diversity of species on Earth.
While natural speciation occurs over long periods of time, human activities have greatly accelerated the rate of species loss. This can have serious consequences for ecosystems and the services they provide to humans, such as food, water, and clean air. It is important to take action to protect and conserve biodiversity, both for the sake of the natural world and for our own well-being.
Efforts to conserve biodiversity can take many forms, including habitat preservation, restoration of degraded ecosystems, and reducing the impact of human activities on the environment. Conservation efforts also involve raising public awareness about the importance of biodiversity and promoting sustainable practices that support the health of ecosystems.
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in the dna isolation process, which substance in the extraction solution caused the proteins and carbohydrates to precipitate out, letting the dna remain in solution?
In the DNA isolation process, the substance in the extraction solution that causes proteins and carbohydrates to precipitate out, allowing the DNA to remain in solution, is the detergent. The detergent helps break down cell and nuclear membranes, releasing the DNA into the solution.
The substance in the extraction solution that caused the proteins and carbohydrates to precipitate out, allowing the DNA to remain in solution, is typically a high concentration of salt (such as sodium chloride or ammonium acetate). This is because salt disrupts the hydrogen bonds and other interactions that hold proteins and carbohydrates in their folded, functional states. As a result, the proteins and carbohydrates lose their solubility and come out of solution, while the DNA remains dissolved due to its unique chemical structure and properties. It's important to note that this is a , as the exact composition of the extraction solution and the specific steps involved in the DNA isolation process can vary depending on the method being used.
Furthermore, it also causes proteins and carbohydrates to aggregate, allowing them to be separated from the DNA. This step is crucial for obtaining a pure DNA sample for further analysis.
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Are all phospholipids also considered glycerophospholipids? Explain why.
Yes, all phospholipids are considered glycerophospholipids because they contain a glycerol backbone with at least one phosphate group attached.
Phospholipids: These are a type of lipid molecule that is a major component of cell membranes. They consist of a hydrophilic (water-loving) head and two hydrophobic (water-repelling) fatty acid tails.Glycerol: This is a three-carbon molecule that serves as the backbone for phospholipids. It connects the hydrophilic head and the hydrophobic tails.Glycerophospholipids: These are phospholipids that specifically have a glycerol backbone. The hydrophilic head group in glycerophospholipids is connected to the glycerol molecule by a phosphate group.Since all phospholipids have a glycerol backbone and a phosphate group connecting the head group, they are all considered glycerophospholipids. This classification highlights the structural similarity among phospholipids, which is essential for their role in forming cell membranes.
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if there were six guanine bases in one strand of a model of a dna how many cytosine bases would there be in the complementary strand?
The number of cytosine bases in the complementary strand would be the same as the number of guanine bases in the original strand.
To determine the number of cytosine bases in the complementary strand if there were six guanine bases in one strand of a model of DNA, you can follow these steps:
1. Recall the base-pairing rules for DNA: adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C).
2. Apply this rule to the given information: since there are six guanine bases in one strand, they will each pair with a cytosine base in the complementary strand.
If there were six guanine bases in one strand of a model of DNA, there would be six cytosine bases in the complementary strand. This is because in DNA, guanine always pairs with cytosine and adenine always pairs with thymine.
Therefore, the number of cytosine bases in the complementary strand would be the same as the number of guanine bases in the original strand.
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what is sucrose made of? give the 2 monomers, the anomeric bond (alpha or beta) and the numbers (location) that the bond connects.
The sucrose molecule is made up of two monomers: glucose and fructose. The anomeric bond is an alpha-1,2-glycosidic bond that connects the carbon-1 atom of the glucose molecule to the carbon-2 atom of the fructose molecule.
Sucrose is a disaccharide composed of two monomers: glucose and fructose. The anomeric bond in sucrose is an alpha-1,2-glycosidic bond, which connects the alpha-anomeric carbon atom of glucose (C1) to the beta-anomeric carbon atom of fructose (C2). The bond is formed through a condensation reaction between the hydroxyl group on C1 of glucose and the hydroxyl group on C2 of fructose, resulting in the loss of a water molecule. The resulting molecule is sucrose, which is commonly known as table sugar.Learn more about monomers: https://brainly.com/question/30017579
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Part A - Behavior and causation Scientists classify behaviors as either innate or learned, depending on whether the behavior has been influenced by previous experiences. They also attempt to determine both the proximate causes and ultimate causes of the behaviors they study Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Terms can be used once, more than once, or not at all 1. A question about why a behavior occurs relates to 2. A(n) ___ is shaped by experiences
3. If an animal's experience during development does not influence a response, the response is most likely a(n) __
4. A fixed action pattern is an example of __
5. A(n) __ can vary widely within a species. 6. A scientist who questions the evolutionary history that a given behavior relates to is investigating its __
7. An action that is observed in embryos is a(n) __
8. A scientist examining the mechanism of a particular behavior is studying __
- proximate causation - innate behavior - learned behavior - ultimate causation
On the other hand, ultimate causation is concerned with the adaptive and evolutionary causes of a behaviour.
1. A question about why a behavior occurs relates to ultimate causation.
2. A(n) behavior is shaped by experiences.
3. If an animal's experience during development does not influence a response, the response is most likely an innate behavior.
4. A fixed action pattern is an example of innate behavior.
5. A(n) behavior can vary widely within a species.
6. A scientist who questions the evolutionary history that a given behavior relates to is investigating its ultimate causation.
7. An action that is observed in embryos is a(n) innate behavior.
8. A scientist examining the mechanism of a particular behavior is studying proximate causation.
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where is blood filtered in the kidney? How do oncotic and hydrostatic pressures play a role here? what is the overall net movement between the blood and bowman's space?what would happen if these is a buildup of urine behind a stone for example?consult pg 371 if confused
Blood is filtered in the kidney in a structure called the glomerulus. Oncotic pressure and hydrostatic pressure play a role in the filtration process by affecting the overall net movement between the blood and Bowman's space. The overall net movement between the blood and Bowman's space is the movement of fluids and solutes out of the capillaries and into Bowman's space. If there is a buildup of urine behind a stone, it can cause a blockage in the urinary system, leading to a backup of pressure.
The glomerulus is a network of small blood vessels called capillaries that are surrounded by a Bowman's capsule. The capillaries have a high pressure, which allows them to filter small molecules such as waste products, electrolytes, and water out of the blood and into Bowman's space.
Oncotic pressure and hydrostatic pressure play a role in this process. Hydrostatic pressure is the force exerted by the blood pushing against the walls of the capillaries. This pressure helps to push fluids and solutes out of the capillaries and into Bowman's space.
The oncotic pressure is the force exerted by proteins in the blood that tend to draw fluids back into the capillaries. These opposing pressures help to regulate the movement of fluids and solutes across the capillary walls.
The net movement between the blood and Bowman's space is typically filtration, where water and solutes are forced from the blood into the Bowman's space, eventually becoming part of the filtrate that moves through the nephron. This is influenced by the balance between hydrostatic pressure and oncotic pressure.
If there is a buildup of urine behind a stone, for example, it can lead to an increase in pressure within the kidney. This may cause pain, swelling, and potential damage to the kidney. Additionally, the increased pressure could affect the glomerular filtration rate, resulting in decreased filtration efficiency and potential kidney problems. In some cases, it may require medical intervention to remove the stone and alleviate the pressure.
In summary, blood is filtered in the glomerulus and the different pressures play an important role in the filtration processes, and any stone deposition can affect kidney functions.
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Answer the following questions regarding transcription:
What unwinds the DNA double helix to be read?
What enzyme reads the DNA and makes hnRNA? What is hnRNA and how is it related to mRNA?
Where does this enzyme bind- name the region and how many base pairs upstream or downstream?
During transcription, the DNA double helix is unwound by the enzyme RNA polymerase. This enzyme reads the DNA and synthesizes a complementary molecule of hnRNA (heterogeneous nuclear RNA). hnRNA is the precursor to mRNA (messenger RNA), which carries the genetic information from the DNA to the ribosomes for protein synthesis.
The enzyme responsible for reading the DNA and synthesizing hnRNA (heterogeneous nuclear RNA) is called RNA polymerase II. hnRNA is the precursor to mRNA (messenger RNA). hnRNA undergoes a series of processing steps, including splicing, capping, and polyadenylation, to become mature mRNA, which is then used as a template for protein synthesis.
RNA polymerase II binds to a specific region of DNA called the promoter. This region is usually located upstream of the gene to be transcribed, typically within 100-200 base pairs from the transcription start site.
In summary, during transcription, helicase unwinds the DNA double helix, and RNA polymerase II reads the DNA to create hnRNA, which is later processed into mRNA. The enzyme binds to the promoter region upstream of the gene.
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not an essential nutrient because it can be synthesized by gut bacteria. it is called ___
The nutrient you are referring to is Vitamin K. Vitamin K is not considered an essential nutrient because it can be synthesized by gut bacteria. This means that the body can produce enough Vitamin K on its own without needing to rely on dietary sources. However, some individuals may still need to consume Vitamin K through their diet or supplements if they have certain medical conditions or take certain medications that affect the absorption or synthesis of this vitamin.
Vitamin K is a group of fat-soluble vitamins that play an essential role in blood clotting and bone metabolism. Although it is crucial for our body, it is not considered an essential nutrient because it can be synthesized by the bacteria present in our gastrointestinal tract. This synthesis helps to fulfill our body's vitamin K requirements, so we don't rely entirely on our diet for it.
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What happens to an enzyme during its reaction with a substrate? Is it changed or consumed?
During the reaction between an enzyme and its substrate, the enzyme does not change or get consumed. Instead, it facilitates the reaction by binding to the substrate and lowering the activation energy required for the reaction to occur.
The enzyme brings the substrate molecules closer together and orients them in a way that makes it easier for them to react with each other. Once the reaction is complete, the enzyme releases the product and is free to bind with another substrate molecule to repeat the process.Therefore, the enzyme remains unchanged and can catalyze multiple reactions with different substrate molecules.Learn more about the enzyme: https://brainly.com/question/14577353
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the hiv drug azidothymidine (azt) has what mechanism of action?choose one:a. it is an integrase inhibitor.b. it is a protease inhibitor.c. it is a reverse transcriptase inhibitor.d. it blocks the cd4 receptor.
The HIV drug azidothymidine (AZT) has it is a reverse transcriptase inhibitor mechanism of action.
Azidothymidine, generally known as zidovudine or AZT, is a medication used to prevent HIV-positive people from developing AIDS (acquired immunodeficiency syndrome). The class of medications known as nucleoside reverse transcriptase inhibitors (NRTIs) includes AZT. The U.S. Food and Drug Administration granted the first of these medications, AZT, approval in 1987 with the goal of extending the lives of AIDS patients.
Only when HIV is reproducing into proviral DNA—viral DNA that has not yet been integrated into host DNA—does AZT become effective against it. This is due to the fact that AZT's active ingredient, zidovudine 5-triphosphate, has a high affinity (attraction) for the reverse transcriptase enzyme that retroviruses like HIV employ to generate viral DNA.
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Proteasomes act primarily on proteins that have been marked for destruction by the covalent attachment of which small protein?
Proteasomes primarily act on proteins that have been marked for destruction by the covalent attachment of ubiquitin.
What kind of proteins do proteasomes primarily act on?Proteasomes act primarily on proteins that have been marked for destruction by the covalent attachment of ubiquitin, which is a small protein.Proteasomes are large protein complexes that play a crucial role in regulating the levels of proteins in cells.
They accomplish this by degrading unwanted or damaged proteins. Proteins targeted for degradation are marked with a small protein called ubiquitin, which is covalently attached to the protein by a series of enzymes.
Once marked, the protein is recognized by the proteasome, which then unfolds the protein and breaks it down into short peptides.
This process of protein degradation is essential for maintaining proper cellular function and is involved in a wide variety of biological processes, including cell cycle regulation, DNA repair, and immune responses.
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fluid vs crystallized intelligence. Define these. At what age do each peak?
Fluid intelligence and crystallized intelligence are two types of human cognitive abilities. Fluid intelligence refers to the ability to think logically, solve problems, and adapt to new situations without relying on prior knowledge. It generally peaks in the early-to-mid-20s.
Crystallized intelligence, on the other hand, involves the accumulation of knowledge, facts, and skills gained through experience and learning. It continues to improve throughout adulthood and often peaks in middle age (40s-60s).
In summary, fluid intelligence focuses on problem-solving abilities and peaks in early adulthood, while crystallized intelligence involves accumulated knowledge and peaks later in life. Both types of intelligence contribute to an individual's overall cognitive capabilities.
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temperate phage genes that encode toxin production may cause a normally harmless bacterial species to become pathogenic. this is an example of .
A typically innocuous bacterial species may develop pathogenicity as a result of temperate phage genes that encode toxin synthesis. Here's an illustration of lysogenic conversion.
Temperate phages can integrate their DNA into the bacterial chromosome and become dormant or lysogenic. However, some of the integrated phage genes can encode toxins or other virulence factors that can transform the bacteria into a pathogen.
The phage genes that encode these virulence factors are expressed in the bacterial host cell, leading to the production of toxins that can harm other organisms or cause disease in humans. This process is particularly concerning because it can rapidly turn a harmless bacterial strain into a dangerous pathogen.
Lysogenic conversion has been documented in several bacterial species, including Corynebacterium diphtheriae, which causes diphtheria, and Vibrio cholera, which causes cholera. This process underscores the importance of understanding the complex interactions between bacteria and their phages and highlights the potential risks associated with the spread of phage-encoded virulence genes in the environment.
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what is the reaction called when a phosphate ester is formed by transferring a phosphate group from ATP onto a sugar?
The reaction you are referring to is called phosphorylation. Phosphorylation is the process of adding a phosphate group to a molecule, which is typically done using ATP as the source of the phosphate group.
In the case of forming a phosphate ester on a sugar molecule, the process involves the transfer of a phosphate group from ATP onto the sugar molecule, forming a bond between the phosphate group and the sugar.
This process is important for a variety of cellular processes, such as energy metabolism and signal transduction, and is often a key step in the activation or regulation of enzymes and other proteins.
Overall, phosphorylation plays a crucial role in many biochemical pathways and is a fundamental process for life as we know it.
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How are peptide bonds broken? Does this need to be catalyzed? If so, how? Explain.
Peptide bonds are broken through a process called hydrolysis, which involves the addition of a water molecule to the bond. This reaction is facilitated by enzymes called proteases or peptidases, which act as catalysts to speed up the process.
Proteases and peptidases have specific active sites that bind to the peptide bond in a substrate molecule, positioning it for the reaction. When the enzyme-substrate complex is formed, the protease catalyzes the hydrolysis reaction by lowering the activation energy required for the bond to break. This is achieved by stabilizing the transition state and providing an optimal environment for the reaction to occur.
During the reaction, the protease donates a proton (H⁺) to the amino group of the peptide bond and accepts a proton from the carboxyl group, allowing the water molecule to be added. As a result, the peptide bond is cleaved, and the two separate amino acids are released.
Overall, the breaking of peptide bonds requires the input of energy, typically in the form of a catalyst such as a protease. This process is essential for the regulation and modification of protein function in the body.
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what region of the spinal cord is composed mainly of the cell bodies of the neurons?
The region of the spinal cord that is composed mainly of the cell bodies of the neurons is the gray matter.
The gray matter is located in the center of the spinal cord and contains the cell bodies of the sensory and motor neurons that receive and transmit information to and from the brain. The gray matter is surrounded by the white matter, which consists mainly of axons that carry signals up and down the spinal cord.
The gray matter is located in the central part of the spinal cord and is shaped like a butterfly or an "H." It contains cell bodies, dendrites, and unmyelinated axons of neurons. The gray matter is essential for processing and integrating information within the spinal cord.
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Biomechanics: What abundant protein, whose name is derived from the Greek word for glue, provides most of the tensile strength in tissues such as bone, skin, cartilage, and fascia? It is commonly injected by cosmetic surgeons as a wrinkle filler?
The protein that provides most of the tensile strength in tissues such as bone, skin, cartilage, and fascia is called collagen. The name collagen is derived from the Greek word "kolla," which means glue. Collagen is abundant in the body, and it is a major component of connective tissues.
In bone, collagen forms the structural framework that provides the bone with its strength and flexibility. In the skin, collagen helps to maintain its elasticity and firmness.
Collagen is also found in cartilage, which provides cushioning between bones, and fascia, which is a layer of connective tissue that surrounds muscles, bones, and organs.
Cosmetic surgeons commonly use collagen as a wrinkle filler because of its ability to add volume and plumpness to the skin.
Overall, collagen plays a critical role in maintaining the integrity and strength of various tissues in the body, making it a vital component of biomechanics.
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During DNA replication, one of the new strands of DNA is synthesized continuously, while the other is synthesized as a number of separate fragments of DNA that are subsequently linked by DNA ligase. This is because:
A) replication starts at many points on the chromosome
B) DNA polymerase Ill only synthesizes DNA in the 3' - 5' direction
C) DNA polymerase III only synthesizes DNA in the 5' - 3' direction
D) DNA polymerase Ill only synthesizes DNA in the 5' - 3' direction
E) DNA polymerase Ill only synthesizes DNA in the 3' - 5' direction
The correct answer is D) DNA polymerase III only synthesizes DNA in the 5' - 3' direction, so the lagging strand must be synthesized in a series of fragments that can be later connected.
What is the direction of DNA synthesis by DNA polymerase III during replication?The correct answer is D) DNA polymerase III only synthesizes DNA in the 5' - 3' direction. During DNA replication, the leading strand is synthesized continuously in the 5' - 3' direction by DNA polymerase III.
The lagging strand, however, is synthesized in the opposite direction (3' - 5') and is therefore synthesized as a series of separate fragments called Okazaki fragments.
These fragments are later linked together by DNA ligase to form a continuous strand.
This is because DNA polymerase III can only add nucleotides in the 5' - 3' direction, so the lagging strand must be synthesized in a series of fragments that can be later connected.
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what is the nucleophile involved in the formation of the bromohydrin product?
The nucleophile involved in the formation of the bromohydrin product is water.
During the formation of bromohydrin, the nucleophilic attack of water on the electrophilic carbon in the alkene forms a cyclic intermediate. This intermediate reacts with bromine to form the final product, which is a bromohydrin. The water molecule is critical in this reaction as it attacks the carbocation intermediate and facilitates the formation of the cyclic intermediate.
The bromine ion acts as an electrophile in the reaction and adds to the intermediate to form the bromohydrin product. The resulting product is a useful intermediate in the synthesis of various organic compounds.
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your body makes proteins by following information coded in your_______.
multiple select question.
a. deoxy
b. ribonucleic c. acidpoly
d. peptidesdnaskin
Your body makes proteins by following information coded in you: .
A. Deoxyribonucleic acid (DNA)
B. Ribonucleic acid (RNA)
D. Peptides
What is the protein?Proteins are said to be big complex atoms that are basic for different capacities within the body such as building and repairing tissues, carrying out metabolic responses, and transmitting signals between cells.
Therefore, The method of making proteins is called protein synthesis and it includes taking after the real coded within the DNA. DNA stands for deoxyribonucleic corrosive, which may be a long particle made up of four distinctive nucleotide bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
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name the order and function of the following components of the digestive tract: pharynxrectumstomachlarge intestineesophagusoral cavitysmall intestinewhat to the salivary glands, pancreas, liver and gallbladder do?
The order of the digestive tract is as follows: oral cavity, pharynx, esophagus, stomach, small intestine, large intestine, and rectum. The function of the digestive tract is to break down food into smaller particles that can be absorbed by the body.
The oral cavity (mouth) is where food is first ingested and mechanically broken down by chewing. The pharynx connects the mouth to the esophagus, which transports the food to the stomach.
The stomach secretes enzymes and acids to further break down the food. The small intestine is where most of the nutrients are absorbed into the body. The large intestine absorbs water and electrolytes, and the rectum stores and eliminates waste.
The salivary glands secrete saliva, which contains enzymes that begin the process of breaking down carbohydrates. The pancreas secretes digestive enzymes into the small intestine to further break down carbohydrates, fats, and proteins.
The liver produces bile, which aids in the digestion of fats. The gallbladder stores and releases bile into the small intestine. These organs work together to ensure the proper digestion and absorption of nutrients.
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Main steps of the scientific method
The scientific method consists of the following steps: observation, question, hypothesis, prediction, experiment, data analysis, conclusion, and communication. It is a methodical approach to investigating phenomena and learning new things.
What is the scientific hypothesis?A theory is a well-thought-out explanation for natural-world observations that have been built using the scientific method and incorporates many facts and hypotheses.
What are the benefits of the scientific method steps?The benefit of all scientific research that employs the Scientific Method is that the experiments can be replicated by anyone, anywhere. When similar results are obtained in each experiment, the case for the theory becomes stronger.
What are the five fundamentals of the scientific method?The scientific method consists of five steps: 1) defining the problem, 2) making observations, 3) developing a hypothesis, 4) conducting an experiment, and 5) concluding.
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Complete question:-
What are the main steps of the scientific method?
what are D-sugars vs L-sugars? Are they enantiomers? Do they have positive or negative rotation?
D-sugars and L-sugars are enantiomers, which means they are non-superimposable mirror images of each other. These terms refer to the spatial arrangement of atoms in a sugar molecule, specifically the configuration of the chiral carbon atom furthest from the carbonyl group. D-sugars typically have a positive rotation and L-sugars have a negative rotation.
D-sugars and L-sugars are isomers of sugars that differ in their three-dimensional arrangement of atoms around a chiral carbon, also known as an asymmetric carbon. These two isomers are mirror images of each other and are therefore known as enantiomers. D-sugars and L-sugars are differentiated based on their spatial orientation relative to a reference molecule, such as glyceraldehyde. D-sugars have the hydroxyl group on the chiral carbon farthest from the carbonyl group oriented to the right, while L-sugars have the hydroxyl group oriented to the left. Enantiomers can rotate plane-polarized light, and D-sugars and L-sugars have different degrees of rotation. D-sugars have a positive rotation, while L-sugars have a negative rotation.
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