Alcohol causes dilation of arterioles and a sensation of warmth. would you recommend that someone who is stranded in the snow drink alcohol to keep warm? why or why not?
Answers
No, alcohol only gives you a sensation of warmth and it does not make you warm.
Alcohol causes the blood vessels to dilate and carry more blood in them. Heat carried by the blood would be lost more in this dilation of blood vessels or arterioles. It will thus increase the risk of hypothermia.
The normal heat process in the body is like blood is moved away from the skin into the organs of the body and makes you feel colder. Alcohol reverses this process. It increases the blood flow into the skin and thus makes it warmer.
You may even feel more sweat by drinking alcohol which decreases your body temperature even further. Therefore, alcohol only creates a sense of warmth but even decreases the body temperature.
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Related Questions
what happens if there is a defect in only one of the four enzymatic steps of the urea cycle? the defect will not result in any change until multiple enzymes in the urea cycle are affected. the defect will not result in any change unless carbamoyl phosphate synthetase is also affected. the defect results in hyperammonemia, which is an elevated blood nh4 level. the defect results in hyperammonemia, which is an elevated blood nh4 level.
Answers
Defects in any of the enzymatic steps in the urea cycle can cause C. These defects cause hyperammonemia, which is an increase in the blood level of NH4.
The urea cycle is part of the nitrogen cycle, namely the conversion of ammonia to urea. In mammals the urea cycle occurs in the liver, the urea product is excreted by the kidneys.
Enzymatic failure at any stage of the urea cycle can be fatal, because there is no other mechanism in the body that can eliminate the toxic properties of ammonia other than being converted into urea. Enzymatic failure of the urea cycle causes symptoms of hyperammonemia, liver damage, mental disability and death.
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Which of the following statements about changes in ploidy number is true? Select one: O a. It is less common in plants than in animals. O b. It often reduces reproductive isolation. O c. It is the most common cause of allopatric speciation in animals. O d. It can result in instantaneous speciation.
Answers
D) It can result in instantaneous speciation is the correct option from the given statement about changes in ploidy number.
Explanation: Changes in the ploidy number can result in speciation, which is a complex process that can occur in different ways. However, polyploid speciation, or allopolyploid speciation, is a common type of polyploid speciation that can occur instantly. Polyploidy occurs when the chromosome number is increased, which can result in the formation of new species. Instead of having two sets of chromosomes, polyploids have three or more sets of chromosomes. Autopolyploidy, on the other hand, occurs when the chromosome number is doubled in the same species, whereas allopolyploidy occurs when different species combine chromosomes to form a new species. A type of instant speciation, such as allopolyploid speciation, may result from a chromosomal event such as a hybridization between two species with a different chromosome number.
The offspring's chromosomes can combine in various ways to create a new polyploid species that can no longer reproduce with the original species.This results in a new species that is immediately separated from the original species, and it is a very common type of polyploid speciation. In the animal kingdom, instant speciation is not as common as in the plant kingdom, where polyploid speciation is more common.
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explain how the geologist knows that the flow is older then the intrusion
Answers
(Multiple Choice Worth 3 points)
(04.01 MC)
Which statement correctly describes the transfer of energy between the blue arrows?
O There is no change in energy.
There is twice the gain of energy.
There is a loss of energy.
There is a gain in energy.
Answers
The blue arrows denote the direction of the energy transfer from the turbine to the electrical generator. Based on the given diagram, the energy transfer between the blue arrows is a gain in energy.
Energy transfer refers to the conveyance of energy from one form to another, such as mechanical energy into electrical energy. Therefore, there is an increase in energy between the turbine and the electrical generator, which is highlighted in the blue arrows' direction.
The generator gains energy in the form of kinetic energy from the turning motion of the turbine. When the turbine turns the shaft of the generator, it causes electromagnetic fields to occur within the generator, which, in turn, generates electricity.
This energy transfer process is efficient as long as the system does not face friction or other forms of resistances. If the system does face such resistances, then there is a loss of energy and inefficiency in the energy transfer process, which can significantly affect the system's overall performance.
In conclusion, the energy transfer between the blue arrows is a gain in energy. The generator gains energy in the form of kinetic energy, which is converted into electrical energy. The efficient energy transfer process is vital for the system's optimum performance and operation.
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Amoeba Sponge Earthworm Salmon
Segmented Body
Multicellular
Unicellular
Common Ancestor
Lizard Kangaroo Cat
Jaws
Limbs
Hair
Placental
a) Why is the amoeba considered an outgroup in this cladogram? (1 point)
for reprod tion. Where
ism would belong in the
Answers
The amoeba is considered an outgroup because it is the taxon that diverges earliest from the common ancestor of all the listed organisms
Amoeba explained.In the given cladogram, the amoeba is considered an outgroup because it is the taxon that diverges earliest from the common ancestor of all the listed organisms. An outgroup is a taxonomic group that is used to establish the ancestral characteristics and evolutionary relationships within a cladistic analysis.
In this case, amoeba is a unicellular organism, whilke all the the other organisms listed are multicellular. The presence of a multicelluar body is a derived characteristics that evolved after the divergence of the amoeba lineage. By using the amoeba as an outgroup, we can determine shared derived characteristics among the multicellular organisms in the cladogram.
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why do some leaves turn from green to red, orange, or yellow in the fall?
Answers
Answer:
Chlorophyll Breaks Down
Explanation:
because of changes in the length of daylight and changes in temperature, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible
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of
5. Which cannot fix atmospheric nitrogen in the soil?
b) Clostridium c) Azotobacter
a) Rhizobium
d) Penicillin
Answers
Answer:
The atmospheric nitrogen cannot be taken directly by plants and animals. Certain bacteria and blue green algae present in the soil fix nitrogen from the atmosphere and convert into compounds of nitrogen.
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On February 21, a student observes that the Moon cannot be seen in the clear
night sky. On what date will the student not be able to see the Moon again in the
clear night sky?
A. February 28
B.March 7
C.March 14
D.March 21
Answers
Answer:
Okay so the answer is
C...
On February 21, a student observes that the Moon cannot be seen in the clear night sky. The date when the student is not able to see the Moon again is on March 21. The correct option is D.
What is the moon?The moon is the only natural satellite of the earth. It is white and gray and visible from the earth on nights only. It is the fifth-largest satellite in the solar system.
The moon has different phases seen from the earth because the moon revolves around the sun. The four phases have been named full moon, no moon, C moon, and half moon.
In 28 days, the moon is not visible for one day, then the other day it is visible and C-shaped. The student was seen on February 21.
21 + 27 day means 21 march.
Thus, the correct option is D. March 21.
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marine phytoplankton are not found at great depths in the ocean because of the lack of
Answers
Answer:
sunlight
Explanation:
Marine phytoplanktons are not found at great depths in the ocean because of the lack of sunlight at these depths.
Phytoplanktons need sunlight to survive. They utilize light for food production through photosynthesis. Without light, this process would become limited and the phytoplanktons will die of starvation.
At great ocean depths, sunlight penetration becomes limited and thus, phytoplanktons also stay away from these depths.
In lactic acid fermentation, NADH reduces pyruvate, and the products are ______ and lactic acid.
Answers
In lactic acid fermentation, NADH reduces pyruvate, and the products are NAD+ and lactic acid.
During lactic acid fermentation, which is an anaerobic process, pyruvate is converted into lactic acid. This conversion occurs through the transfer of electrons from NADH to pyruvate, facilitated by the enzyme lactate dehydrogenase. As a result, NADH is oxidized to NAD+, regenerating the oxidized form of the coenzyme.
The reduction of pyruvate by NADH to form lactic acid serves as a mechanism to regenerate NAD+ for the continued functioning of glycolysis. Glycolysis, which is an anaerobic pathway, produces pyruvate as the end product. In the absence of oxygen, lactic acid fermentation allows for the regeneration of NAD+ needed to sustain glycolysis and the production of ATP in the absence of the electron transport chain.
Therefore, the products of lactic acid fermentation are NAD+ and lactic acid.
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When protein consumption is in excess of body needs and energy needs are met, the excess amino acids are metabolized and the energy in the molecule is.
Answers
When protein consumption is in excess of body needs and energy needs are met, the excess amino acids are metabolized and the energy in the molecule is stored as fat.
Proteins are essential components of cells and are primary sources of amino acids.
For the human body, proteins are vital elements as they not only repair damaged and broken cells but also manufacture new ones.
Moreover, proteins are necessary for teenagers, pregnant women, and children as they help promote growth and development.
However, if proteins are consumed more than the requirement of body needs then their excessive amount is stored as fat while the residues of amino acids are discharged from the body.
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Match the P/O ratio with the number of subunits in the C-ring: 2.50 ATP/NADH A. 12 subunits -- 2.30 ATP/NADH B. 9 subunits -- 2.00 ATP/NADH C. 15 subunits -- 1.76 ATP/NADH D. 10 subunits -- 1.67 ATP/NADH E. 14 subunits
Answers
The P/O ratio for a C-ring with 14 subunits is not specified in the given options
The matching of P/O ratio with the number of subunits in the C-ring is as follows:
A. 12 subunits -- 2.30 ATP/NADH
B. 9 subunits -- 2.00 ATP/NADH
C. 15 subunits -- 1.76 ATP/NADH
D. 10 subunits -- 1.67 ATP/NADH
E. 14 subunits
In the oxidative phosphorylation process, the P/O ratio refers to the number of ATP molecules synthesized per molecule of NADH oxidized. The P/O ratio is influenced by the number of subunits in the C-ring of the ATP synthase complex, which is responsible for ATP synthesis.
Based on experimental observations, the matching indicates that a C-ring with 12 subunits has a P/O ratio of 2.30 ATP/NADH, a C-ring with 9 subunits has a P/O ratio of 2.00 ATP/NADH, a C-ring with 15 subunits has a P/O ratio of 1.76 ATP/NADH, and a C-ring with 10 subunits has a P/O ratio of 1.67 ATP/NADH.
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Identify the type of chemical substance a scientist would need to use to cut and paste the genes to produce genetically modified tomato plants
Answers
Genetically modified (GM) foods have altered DNA to enhance desired qualities or improve the plant's resistance to pests or environmental factors. This DNA manipulation takes place using recombinant DNA technology, and it requires a chemical substance called restriction enzymes to cut and paste the genes.
Restriction enzymes, also known as molecular scissors, are a type of enzyme that can slice through DNA at a particular location and then seal the ends back together when exposed to the right conditions. As a result, scientists can select and remove a specific gene from one organism and insert it into another to produce genetically modified crops.
Restriction enzymes recognize a specific DNA sequence called the restriction site, and they cut the DNA at that point. Each restriction enzyme has its own restriction site, and this specificity allows scientists to select the gene they want to cut and paste from one organism to another. For example, if scientists want to improve the shelf life of tomatoes, they can use restriction enzymes to cut out the desired gene responsible for the long shelf life trait in one plant species and paste it into the DNA of the tomato plant to produce genetically modified tomatoes with an extended shelf life.
In conclusion, restriction enzymes play a crucial role in the genetic engineering process, allowing scientists to create genetically modified plants with desirable traits.
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What did Aristotle observe to help him understand that Earth is round?
Answers
Answer:
Aristotle observed that only 50% of the stars are visible at one time, concurring that Earth is round because if not we would all see the same stars 100% of the time.
Scientists have been tracking the distribution of genetic variations within an elephant population over a period of 15 years. These variations alone can be used as evidence of
different cognitive abilities.
different reproductive success.
different environmental factors.
different stress-related issues.
Answers
GENETIC variation can be used as evidence of differential reproductive success. It is for that reason that more genetically diverse populations have more chances to adapt to environmental changes.
Reproductive success, also known as evolutionary success, refers to the proportion of offspring across the lifespan of an individual.
Moreover, intraspecific genetic variation refers to differences in the nucleotide (DNA) sequences between individuals of the same population.
Genetic diversity represents the raw material on which natural selection can act, which means that certain genes can increase an organism's ability to survive and reproduce.
In consequence, genetic variation is fundamental to introduce different phenotypic traits in a population, which may affect the reproductive success of individuals of that population.
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1. Do you accept your hypothesest 2. What effect did UV radiation have! 3. Did UV radiation penetrate the material you used to shield the plate? 4. What evidence, if any, did you be of light repair!
Answers
Based on the hypothesis, UV rays have a big effect on our bodies. Among them are skin cancer, eye damage and decreased immune system. UV rays will not penetrate the materials used to protect the body.
There are some materials that are impenetrable to UV rays such as bright, high-density clothing, metals, glass and thick plastics and sunscreen. The way to repair skin exposed to UV rays is to wash it with cold water and apply a special ointment for sunburn.
UV rays are part of electromagnetic waves, namely solar radiation in the 100-400 nm band. UV rays that can reach the earth's surface are UV A and UV B rays, with a wavelength of about 100 nm to 1 mm. UV rays are very harmful to the body, so when leaving the house we must always wear protection. So that our skin is not directly in contact with UV rays.
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Match each type of mutation to the image that shows its effects on polypeptide sequence. The original sequence of the DNA is 5'-ATGGCCGGCCCGAAAGAGACC-3'.
I. no mutation
II. silent
III. missense
IV. nonsense
V. frameshift
Answers
The correct match of the mutation its effects on polypeptide sequence. The original sequence of the DNA is 5'-ATGGCCGGCCCGAAAGAGACC-3' is shown as :
A frameshift mutation results in a complete modification of such a protein's sequencing of amino acids.. Since codons, or clusters of three nucleotides, are how ribosomes interpret the mRNA strand, this modification takes place during translation.
Base substitutions, deletions, as well as insertions seem to be the three different forms of DNA mutations. Point mutations were single base substitutions; for example, the sickle-cell disease point mutation Glu -----> Val. There must be 2 kinds of point mutations, the most prevalent of which are.
There are many different kinds of mutations, including translocation, insertion, deletion, and replacement.
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Describe how a substrate interacts with an enzyme. Use the phrase lock and key in your description. Answer in 2-3 sentences.
Answers
A substrate interacts with an enzyme to generate an enzyme-substrate conformational change that resembles a key capable of matching to a particular lock in a door.
What is enzyme specificity?Enzyme specificity refers to the ability of an e3znyme to bind to a particular substrate in order to catalyze a chemical reaction. This binding lead to the formation of the enzyme-substrate complex where the substrate matches with the enzyme at the active site in a similar way to a lock and a key.
Therefore, with this data, we can see that enzyme and substrate are very specific and they interact in a similar way to a key and a lock in the door.
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What are the three energy systems that replenish ATP? A. Aerobic glycolysis, adenosine triphosphate, oxidative phosphorylation B. Anaerobic glycolysis, gluconeogenesis, oxidative phosphorylation C. Creatine phosphate, anaerobic glycolysis, oxidative phosphorylation D. Carbohydrates, lipids, protein
Answers
The three main energy mechanisms that replace ATP are oxidative phosphorylation, anaerobic glycolysis, and creatine phosphate.
One and more of the below three energy systems can be used to regenerate ATP: Anaerobic Gluconeogenesis (Lactic Acid System), Anaerobic Respiration, and Phosphagen System (ATP + PCr) (Aerobic Glycolysis and Beta Oxidation). The nitrogenous base adenine, the sugar ribose, and a chain containing three phosphate groups linked to ribose are the three primary components of the nucleotide ATP. Phosphocreatine, a high-energy molecule in muscle cells, can instantly replenish ATP. Nevertheless, because of its restricted availability, creatine phosphate can only sustain muscular tension for an extra 3–4 seconds. The transport of various molecules across cellular membrane is one of the many cellular processes for which ATP is utilised.
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The whole process of dark adaptation takes about _____ minutes for cones.
a.
8
b.
15
c.
30
d.
60
Answers
Answer:
I think it is C. 30
Explanation:
The lower jawbone, or __________, articulates with the temporal bones in the only freely movable joints in the skull.
Answers
The lower jawbone, or mandible, articulates with the temporal bones in the only freely movable joints in the skull.
The mandible, commonly known as the lower jawbone, plays a crucial role in the skeletal structure of the skull. It is the largest and strongest bone in the face, serving as the foundation for the lower portion of the face and providing support for the teeth. The mandible is connected to the rest of the skull through a pair of temporomandibular joints (TMJ) located on each side, where it articulates with the temporal bones. These TMJs allow for the movement of the lower jaw, enabling actions such as opening and closing the mouth, chewing, and speaking.
The articulation between the mandible and the temporal bones is a synovial joint, characterized by a joint capsule, synovial fluid, and articular surfaces covered with cartilage. This unique joint structure provides both stability and mobility to the mandible, allowing for the wide range of movements necessary for various functions related to eating, speaking, and facial expressions.
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The lower jawbone, or mandible, articulates with the temporal bones in the only freely movable joints in the skull. It is a key element of the skull, providing structural support and protection.
The mandible, also referred to as the jawbone or lower jaw, is the largest and lowest bone found in the human face and cranium. It is the only bone in the skull that is movable and forms the joint known as the temporomandibular joint, in conjunction with the upper jawbone or maxilla. The TMJ enables movements of the mandible, such as opening and closing the mouth, and side-to-side motions. Functionally, the mandible acts as a support for the lower teeth and aids in activities such as chewing and speaking. Structurally, it consists of a horizontal body and two upward and backward branches called rami. The ascending ramus of the mandible serves as an attachment site for muscles involved in chewing. Within the TMJ, a disc made of fibrous cartilage separates the mandible from the temporal bone. Growth of the mandible contributes to the overall development of the face and occlusion of the teeth. Hence, the lower jawbone, or mandible, articulates with the temporal bones.
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If the letter A is used to represent height, where A is tall and a is short.
1. Write the genotypes for tall
2. What is the phenotype for aa
Answers
1. Aa and AA
2. short
According to the World Health Organization, persistent organic pollutants (POPs) are found in nearly all tested organism tissues and environmental samples. Which characteristic of POPs accounts for their presence in living tissues and in environmental samples?
Answers
Answer:
POPs are lipophilic, which means that they can be stored in fatty tissues for long periods of time.
Explanation:
Question 3 of 5
A scientist observes a honeybee as it gathers nectar from a flower and
returns it to the hive. What is the best way for the scientist to record her
observations and share them with other scientists?
A. By measuring the amount of time the process took to complete
B. By taking a snapshot of one part of the process
OC. By recording an audiodescription of the whole process
D. By writing down the time of day that the process occurred
Answers
Which of the following statements about muscles of the elbow joint is true?
a. the brachioradialis originates and inserts on the ulna.
b. The biceps brachii is a posterior extensor.
c. The biceps brachii has two heads that share the same origin site.
d. None of the statements is correct.
Answers
From all the given options, the correct statement about muscles of the elbow joint is (c) The biceps brachii has two heads that share the same origin site.
The correct statement about muscles of the elbow joint is (c) The biceps brachii has two heads that share the same origin site. The biceps brachii is a muscle located in the upper arm and is involved in flexing the elbow joint. It consists of two heads, the long head and the short head. Both heads share a common origin point at the scapula, specifically the supraglenoid tubercle. The long head of the biceps brachii originates from the supraglenoid tubercle and runs along the intertubercular groove of the humerus. The short head originates from the coracoid process of the scapula. Both heads merge together and insert onto the radial tuberosity of the radius bone in the forearm.Thus, option (c) correctly describes the origin of the biceps brachii muscle, while options (a) and (b) are incorrect statements.
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Based on the pattern of inheritance known as sex linkage, if a male is a hemophiliac, how many genes for this trait are present on the sex chromosomes in each of his diploid cells?
A. 1
B. 2
C. 3
D. 4
Answers
Answer:
Based on the pattern of inheritance known as sex linkage, if a male is a hemophiliac, he has two genes for this trait on the sex chromosomes in each of his diploid cells, which is the correct answer choice (B).
Explanation:
In humans, the trait for hemophilia is a recessive trait that is carried on the X chromosome. A male has only one X chromosome and one Y chromosome, while a female has two X chromosomes. This means that a male will express a recessive trait carried on the X chromosome if he inherits a copy of the mutated gene from his mother, while a female will only express the trait if she inherits a copy of the mutated gene from both of her parents.
Since a male hemophiliac inherited the mutated gene for hemophilia from his mother, he has two copies of the mutated gene, one on each of his X and Y chromosomes. This means that there are two genes for this trait on the sex chromosomes in each of his diploid cells.
The other answer choices are incorrect, as they do not accurately reflect the pattern of inheritance for sex-linked traits.
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Explain what change occurred with the moth population after the industrial revolution
Answers
The moth population is an evolutionary example of directional color change in the moth population as a consequence of air pollution during the Industrial Revolution. The frequency of dark-colored moths increased around this time, an example of industrial melanism.
What is the function of the moth?Lepidoptera, a group to which butterflies and moths belong, are important elements in nature. They serve as food for a multitude of animals, control populations of invasive plants and, especially, promote plant pollination.
What is the difference between moths and butterflies?Butterflies leave their wings together in an upright position when they are at rest. But moths leave their wings open, extended horizontally over the body. Finally, we can also differentiate them by their antennas. Butterflies have clavate antennae, that is, thin with a dilated tip.
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Make sure you include the following in your chart:
A picture of your chosen organism from each vertebrate class, which includes fish, amphibians, reptiles, birds, and mammals. Please include website reference for every picture you place in your chart. Make sure to use reliable Internet sources that are science-based and created by educational institutions.
A description of your animals’ reproductive process and the reason they are currently endangered.
A list of five physical characteristics and two behaviors for the animals you have chosen. Make sure to include the way they regulate their body temperature as one of the physical characteristics.
List the common ecosystems or geographical area of your animals.
Instructions: Choose five endangered animals, one from each vertebrate class. Then research and complete the table. Don’t forget to include references.
Animal Name Fish (include animal name and photo) Amphibian (include animal name and photo) Reptile (include animal name and photo) Bird (include animal name and photo) Mammal (include animal name and photo)
Physical Traits (list 5 traits, including body temperature regulation)
Animal Behaviors (list 2 behaviors)
Reproductive Processes (at least 2)
Common Ecosystems
Why are they endangered?
Answers
Animals become endangered due to a combination of natural and human-induced factors, including habitat loss and fragmentation, overexploitation, pollution, climate change, introduction of non-native species, and diseases.
Which animal is classified as endangered, and what are its reproductive habits?Vaquita (Phocoena sinus)
Reproductive Process: Vaquitas' mating season typically occurs between April and June. The gestation period lasts around 10-11 months, after which a single calf is born. Vaquitas are known to have a low reproductive rate, with females giving birth to only one calf every two years.Reason for Endangerment: The vaquita is critically endangered due to accidental entanglement in fishing nets, primarily as bycatch in illegal gillnets targeting the totoaba fish. There are currently estimated to be less than 10 individuals left in the wild.Physical Characteristics: small size (up to 1.5 m in length), dark rings around the eyes and mouth, triangular dorsal fin, dark patches on the lips, and a rounded forehead. Vaquitas regulate their body temperature through thermoregulation.Behaviors: Vaquitas are shy and elusive animals, and not much is known about their behaviors. They are typically solitary or found in small groups of up to three individuals.Learn more about endangered species here:
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Identify the amino acids that will form a polypeptide chain. (Keep them in the correct order!)
Answers
Peptide bonds are used to join amino acids in a certain order determined by the nucleotide sequence in the DNA or RNA template to create polypeptide chains.
The distinctive characteristics of the resultant protein are determined by the amino acid sequence. Lanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine are the twenty different amino acids that can be used to create a polypeptide chain.
Polypeptide chain
A linear chain of amino acids joined by peptide bonds is referred to as a polypeptide chain. Each amino acid has a distinct side chain, an amino group, and a carboxyl group.
Amino acids are chemical molecules. The genetic code, which regulates the arrangement of nucleotides in a gene, determines the sequence of amino acids in a polypeptide chain.
Protein synthesis takes place in the ribosomes of cells and results in the formation of polypeptide chains. The messenger RNA (mRNA) nucleotide sequence is read by the ribosome, which then uses this data to construct a chain of amino acids in the proper sequence.
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PLEASE HELP WILL MARK BRAINLIEST
Answers
Answer:
AO and BO
Explanation:
For the offspring of two parents to have a recessive trait, both parents must have the recessive trait. In this case, the brother has type O blood, meaning both of the parents must have the type O blood present in their genotype, which is why the answer is AO and BO.
Answer:
AO and BO
Explanation:
if you cross the parents the possible outcomes are
A O
B ║AB BO
║
O║AO OO