How many amino acids are responsible for building proteins?.
Answers
The number of amino acids responsible for building proteins is 20. Keep reading for more detailed information on how many amino acids are responsible for building proteins.
Proteins are complex macromolecules present in all living cells. They perform various critical functions within the body, including providing structural support, catalyzing biochemical reactions, and serving as enzymes, hormones, and transporters.Proteins are constructed from a chain of subunits known as amino acids. These amino acids are assembled in a specific sequence to form a peptide chain. The body utilizes the sequence of amino acids to determine a protein's ultimate structure and function.
Amino acids are classified into two groups: essential and non-essential. The body is incapable of producing the essential amino acids, so they must be obtained from the diet. On the other hand, the non-essential amino acids can be synthesized by the body.A total of 20 different amino acids can be found in proteins, and they can be distinguished based on their side chain. The side chains can be non-polar, polar, acidic, or basic. Each amino acid has a unique set of properties, allowing it to play a specific role in protein synthesis and function.In conclusion, the number of amino acids responsible for building proteins is 20.
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Related Questions
Sea turtles, mosquitoes, and frogs all show a
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c I think it is c have a good dsy
A classmate thinks that cancer and apoptosis are both harmful to organisms. Do you agree or disagree? Explain your reasoning.
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_________________________________
Disagree• Cancer Destroys Cells & Is Abnormal• Apoptosis Destroys Cells & Is Normal_________________________________
What produces enzymes?
~There are 8 letters
~ 2nd letter is an “A”
~ 5th letter is a “R”
Answers
Answer:
Pancreas
Explanation:
When using the Nernst equation to calculate membrane potential, we are making several assumptions about conditions in the cell. Which of the following is not a good assumption?
a. The temperature is 37 degrees C.
b. The plasma membrane is primarily permeable to Na+.
At rest, the interior of the cell is more negatively charged than the exterior.
d. K+ is the principal positive ion in the cell.
Answers
When using the Nernst equation to calculate membrane potential, the assumption that is not good is (b) The plasma membrane is primarily permeable to Na+.
At rest, the membrane is more permeable to K+ rather than Na+ ions, which contributes to the resting membrane potential.
In fact, at rest, the plasma membrane is much more permeable to K+ ions than Na+ ions. This is because the membrane contains a large number of K+ channels that are open at rest, allowing K+ ions to move freely across the membrane according to their concentration gradient.
The concentration gradient of K+ ions tends to drive them out of the cell, which creates a negative charge inside the cell relative to the outside, contributing to the resting membrane potential.
On the other hand, the concentration gradient of Na+ ions tends to drive them into the cell, which would tend to make the inside of the cell more positive relative to the outside.
However, the permeability of the membrane to Na+ ions is much lower than the permeability to K+ ions at rest, so the contribution of Na+ ions to the resting membrane potential is relatively small.
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HELP...ill give brainliest! PICTURE ATTATCHED!!!!!!
Answers
Answer:
D I think is the answer
are epinephiren and norepinephrine vaso constrictors or dilators?
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Both epinephrine and norepinephrine are vasoconstrictors. As vasoconstrictors, they cause blood vessels to constrict, which increases blood pressure and directs blood flow to essential organs, such as the heart and brain, in times of stress or danger.
Epinephrine and norepinephrine are hormones produced by the adrenal gland. These hormones are responsible for a wide range of physiological responses in the body, including the regulation of blood pressure and heart rate.
In general, these hormones can act as vasoconstrictors, meaning that they cause blood vessels to constrict and increase blood pressure, or as vasodilators, meaning that they cause blood vessels to widen and lower blood pressure.
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What sentence best supports the statement that hormones are involved in the regulation of homeostasis?
A.
The hormone melatonin induces sleep and its production is slowed by exposure to light.
B.
The hormone oxytocin promotes labor contractions of the uterus during childbirth.
C.
The hormone cortisol suppresses the immune system and is produced when the body is under stress.
D.
The hormone erythropoeitin increases the production of red blood cells when oxygen levels are low.
Answers
Answer:
The hormone erythropoeitin increases the production of red blood cells when oxygen levels are low.
Explanation:
Which of the following is a tissue?
A. Pancreas
B. Fat
C. Kidney
D. Skin
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The skin is composed of three layers: the epidermis, the dermis, and subcutaneous tissue
Does natural selection occur when which of the following conditions are met?
Group of answer choices
Variations between individual organisms lead to differential survival chances.
The conditions in an ecosystem support a wide range of living organisms
Individual organisms depend on each other to obtain available resources.
Habitat and nutrient resources in an area are plentiful over a long period of time.
Answers
Answer:
THANKS FOR THE POINTS I WILL USE IT
Explanation:
what are the differences between ligaments & tendons
Answers
how is the cell membrane important for homeostasis
Answers
Why do saturated fatty acids have straight structures, while unsaturated fatty acids have bent structures
Answers
Answer:
The answer is C
Explanation:
Saturated fatty acids have single carbon-to-carbon bonds.
Answer: saturated fatty acids have single carbon-to-carbon bonds
Explanation:
apex notes
Hydrogen bonds can be found between no other molecules except water.
Answers
Answer:
Without hydrogen bonds, water molecules would move faster more rapidly, with less input of heat energy, causing the temperature to increase more for each calorie of heat added.
Explanation: This would also greatly reduce the amount of heat energy needed for phase changes from ice to liquid, and from liquid to vapor.
Answer: Not really a question but....Two molecules of water can form a hydrogen bond between them that is to say oxygen-hydrogen bonding; the simplest case, when only two molecules are present, is called the water dimer and is often used as a model system.
Why does groundwater's level in the water table remain unchanged after use
Answers
Answer:
The level of the water table can naturally change over time due to changes in weather cycles and precipitation patterns, streamflow and geologic changes, and even human-induced changes, such as the increase in impervious surfaces, such as roads and paved areas, on the landscape.
what are the elements required for photosynthesis what are the products
Answers
AnswerPhotosynthesis involves three elements: carbon, hydrogen, and oxygen. You have seen that the products of photosynthesis are oxygen and glucose.
in classical conditioning, repeated presentations of the conditioned stimulus without the unconditioned stimulus lead to responses acquisition acquisition discrimination discrimination extinction extinction backward conditioning backward conditioning stimulus generalization
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Repeated presentations of the CS without UCS lead to extinction of CR. During acquisition, CS is paired with UCS, learning occurs. Discrimination occurs when organism learns to respond to stimulus but not to another, stimulus generalization occurs when it responds to stimuli.
In classical conditioning, an unconditioned stimulus (UCS) elicits an unconditioned response (UCR) without prior learning. The conditioned stimulus (CS) is a neutral stimulus that acquires the capacity to elicit a response through association with the UCS. The response that is elicited by the CS is called the conditioned response (CR).
Repeated presentations of the conditioned stimulus without the unconditioned stimulus lead to the extinction of the conditioned response. This occurs when the CS is no longer followed by the UCS, and the CR eventually disappears.
Acquisition refers to the initial stage of learning when the CS is first paired with the UCS. During acquisition, the CS is presented before the UCS, and the two stimuli are paired several times. As a result of this pairing, the CS begins to elicit the CR, and learning occurs.
Discrimination is the ability to distinguish between similar stimuli and respond differently to each of them. Discrimination occurs when an organism learns to respond to one CS but not to another, even though both stimuli may be similar.
Generalization is the tendency to respond to stimuli that are similar to the CS. Stimulus generalization occurs when the CR is elicited by stimuli that are similar to the CS, even though they have not been paired with the UCS.
Backward conditioning occurs when the UCS is presented before the CS, which results in little or no learning. This is because the UCS is presented before the CS, and there is no contingency between the two stimuli.
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Paul and John are stacking bricks. They are the same type of bricks and they move them the
same distance. They each stack 100 bricks. It takes Paul 3 minutes and John 5 minutes. (a)
Who does the most work? (b) Who uses the most power?
Answers
John and Paul Stacks did the same amount of work.
Paul uses the most power.
What is work?Work is the product of force and the distance moved by the applied force.
a. Work = force * distance
The unit of force is Joules.
Since John and Paul Stacks the same number of bricks over the same distance, the both did the same amount of work.
b. Power = work done/time taken
The shorter the time taken to do work, the more the applied power.
Since it takes Paul 3 minutes and John 5 minutes, Paul uses the most power.
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Which American Indian group was allied with the British as the French and Indian War began?
A)the Huron
B)the Ottawa
C)the Iroquois Confederacy
D)the Algonquin
Answers
Answer:
The Iroquois Confederacy would be your answer.
hope it helps!
What does density measure
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Answer:
Density has the units of mass divided by volume such as grams per centimeters cube (g/cm3) or kilograms per liter (kg/l).
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You wear a pair of ill-fittin sho ' - bec0me separated. 9 es and develop a blister, whlch occurs when the epidermis and dermis have gt As the bl' ' ' of dead liter heals, you notice that the blister's "roof"—which is composed entirely of epidermis—consists WW 5 In. Why did the epidermis of the blister die? 53 While removing the dead epidermis, you notice that the blister is filled with clear fluid, but no blood. Why wouldn't you find blood in an epidermal injury? 3 The condition epidermolysis bullosa is characterized by repeated blister formation resulting from only minor trauma. Several forms of the disease are caused by mutations in genes coding for keratin proteins. Why would defective keratin lead to an inability to resist mechanical stresses? 3 Many types of cancer chemotherapy drugs work by attacking cells that divide actively and rapidly. What effects would you expect such drugs to have on hair and nails? Why?
Answers
The epidermis of the blister died due to the separation of the epidermis and dermis, disrupting the blood supply and causing the epidermal cells to lack nutrients and oxygen, leading to cell death.
When the ill-fitting shoes cause friction and pressure on the skin, it can lead to the separation of the epidermis and dermis. This separation interrupts the blood supply to the epidermal cells, depriving them of essential nutrients and oxygen. Without a proper blood supply, the epidermal cells cannot survive, resulting in the death of the epidermis and the formation of a blister.
In an epidermal injury, blood is not typically found because the blood vessels reside in the dermis layer, while the blister forms between the epidermis and dermis. Defective keratin in epidermolysis bullosa compromises the structural integrity of the skin, making it unable to resist mechanical stresses. Cancer chemotherapy drugs that target actively dividing cells would likely affect hair and nails because these structures contain rapidly dividing cells.
The epidermis is avascular, meaning it does not contain blood vessels. It receives its nutrients and oxygen through diffusion from the underlying dermis. Therefore, when a blister forms in the epidermis, it is filled with clear fluid (serum) derived from the damaged cells and the surrounding tissues, but not blood.
Keratin proteins are essential for providing strength and stability to the skin by forming a network of intermediate filaments. Mutations in genes coding for keratin proteins result in abnormal or insufficient keratin production, leading to weakened or fragile skin. The defective keratin cannot effectively withstand mechanical stresses, such as friction or pressure, causing repeated blister formation even from minor trauma.
Hair follicles and nail matrix cells are examples of rapidly dividing cells. Chemotherapy drugs that target dividing cells would affect these actively dividing cells, leading to hair loss (alopecia) and changes in nail growth and appearance. The drugs disrupt the cell division process, affecting the proliferation of hair and nail cells, resulting in their temporary or permanent damage.
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In a laboratory investigation, students measured the rate of fermentation in yeast cells. Data was collected by student groups
showing how the rate of fermentation is altered by:
1. pH of the reaction mixture;
2. amount of yeast added to the reaction mixture;
3. type of sugar added to the reaction mixture.
Students were instructed to find the optimum conditions for a new fermentation process to be used at the local bakery. The one
constant in all experimental groups is that the temperature remain at 25°C. Student teams used the Vernier Equipment
Pressure sensor, LabPro interface, gas pressure accessories kit, a clock with second hand, water bath, reaction flask with valve
and tubing, turkey baster, thermometer, source of hot and cold water, balance, 25 ml. graduated cylinder, buffer pH 7, yeast, and
sucrose,
A control situation was run: a. temperature 25°C, b. 25 ml. of buffer pH 7, c. 2 grams of sucrose, d. 2 grams of yeast. The three
substances were combined in the reaction flask and mixed by swirling. The flask and solution was placed in the 25°C water bath
with the stopper firmly in place but, with the valve open. After 10 minutes, when the yeast was active, the flask was sealed by
closing the valve. The collect button was clicked ON. A line, representing the pressure, appeared on the graph and individual
measurements appeared in the data table.
Data was recorded for 300 seconds or until the pressure reached 120 kPa.
One student group's data for amount of yeast can be seen here. Describe the students' results.
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The students' results show that the rate of fermentation increases as the amount of yeast added to the reaction mixture increases.
How to explain the informationThe rate of fermentation increased because more yeast cells means more enzymes available to break down the sugar into ethanol and carbon dioxide. The students also found that the rate of fermentation is fastest at a pH of 7, which is neutral.
This is because the yeast enzymes work best at a neutral pH. The students' results suggest that the optimum conditions for fermentation are a temperature of 25°C, a pH of 7, and an amount of yeast of 4 grams.
The time to reach 120 kPa decreases as the amount of yeast increases. This is consistent with the students' hypothesis that the rate of fermentation increases as the amount of yeast increases.
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The epsilon (£) subunit of DNA polymerase III of E. coli has exonuclease activity. How does it function in the proofreading process? The epsilon subunit ______. A) excises a segment of DNA around the mismatched base B) removes a mismatched nucleotide can recognize which strand is the template or parent strand and which is the new strand of DNA. D) adds nucleotide triphosphates to the 3' end of the growing DNA strand
Answers
The epsilon (£) subunit of DNA polymerase III of E. coli has exonuclease activity. It excises a segment of DNA around the mismatched base and functions in the proofreading process. The correct option is A) excises a segment of DNA around the mismatched base.
DNA Polymerase III is an enzyme that aids in the replication of DNA in prokaryotes. It is the primary enzyme involved in DNA replication in Escherichia coli (E. coli). It has three polymerases and several auxiliary subunits.The ε (epsilon) subunit of DNA polymerase III of E. coli has exonuclease activity in the 3’ to 5’ direction. It can remove a mismatched nucleotide and excise a segment of DNA around the mismatched base.
The 3’ to 5’ exonuclease activity of the epsilon subunit is responsible for DNA proofreading. When an error is found in the newly synthesized strand, it can recognize the mismatched nucleotide and cut it out of the growing strand, followed by resynthesis by the polymerase of the correct nucleotide. Therefore, the epsilon subunit excises a segment of DNA around the mismatched base and functions in the proofreading process.
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Explain why having only one ventricle makes the circulatory system less efficient.
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The efficiency of a double-circulatory system with two ventricles will be greater than that of a single ventricle.
When there are two ventricles, each one can receive both pure oxygenated blood and impure, deoxygenated blood. Four distinct chambers make up the human heart. The septum separates the right and left halves of the body. The right atrium sends deoxygenated blood to the right ventricle. Through the pulmonary artery, the lungs receive this deoxygenated blood and reoxygenate it. Pulmonary circulation is this area of the circulatory system. Through the aorta, the left ventricle transports oxygenated blood to every area of the body. It receives this blood from the left atrium. The systemic circulation we're talking about here.
Consequently, two ventricles are crucial for the effective operation of the pulmonary and systemic circulation.
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What is a natural selection? (use your OWN words and make it short)
Answers
Answer:
Natural Selection is the way that animals survive and adapt, which means that heritable traits that increase survival chances in a certain species are passed down to their offspring and over generations, certain things that species may have died to don't affect them anymore.
fill the blank! most joints of the body and nearly all the joints in the limbs are __________.
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Most joints of the body and nearly all the joints in the limbs are synovial. Synovial joints are freely movable, meaning they are not restricted to a single plane of motion. They are the most common type of joint in the body.
Most joints of the body and nearly all the joints in the limbs are synovial joints. Synovial joints are characterized by the presence of a synovial membrane, which secretes synovial fluid that lubricates the joint and reduces friction between the articulating surfaces. Synovial joints also have a joint capsule, which is a fibrous structure that encloses the joint and helps to maintain its stability. Examples of synovial joints include the shoulder joint, elbow joint, hip joint, knee joint, and ankle joint.
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How long is strep contagious after starting antibiotics.
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After starting antibiotics for strep throat, a person is usually no longer contagious after 24 hours.
However, it's still recommended to complete the full course of antibiotics prescribed by a healthcare provider to ensure the infection is fully treated. In addition, providing a more detailed answer would involve mentioning that if someone doesn't take antibiotics or doesn't complete the full course, they can remain contagious for up to three weeks and can continue to spread the infection to others. It's important for anyone with strep throat to practice good hygiene, such as washing their hands frequently and covering their mouth when coughing or sneezing, to prevent the spread of the bacteria.
When someone with strep throat begins taking antibiotics, the medication works to kill the bacteria causing the infection. After 24 hours, the amount of bacteria is significantly reduced, and the person is less likely to spread the infection to others. However, it's important to complete the full course of antibiotics as prescribed to ensure complete recovery.
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8. the critical value in this situation is 3.841, the same as in the example. do your data support mendel’s theory or not? explain why or why not in detail in the space provided.
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In order to determine whether the data support Mendel's theory or not, it is necessary to provide more context and information regarding the specific experiment or analysis being conducted.
The mention of a critical value of 3.841 suggests that a statistical test or analysis has been performed, but without knowing the nature of the data, the hypothesis being tested, and the statistical test used, it is not possible to provide a definitive answer.
However, in general terms, if the obtained test statistic exceeds the critical value of 3.841, it suggests that the observed data deviate significantly from the expected values predicted by Mendel's theory. This could indicate that there is a significant discrepancy between the observed and expected outcomes, raising doubts about the validity of Mendel's theory in explaining the inheritance patterns of the specific trait under investigation.
Conversely, if the obtained test statistic is below the critical value of 3.841, it suggests that the observed data are consistent with the expected values predicted by Mendel's theory. This would provide support for the theory, indicating that the observed data align well with the expected patterns of inheritance.
To provide a more accurate assessment, it is necessary to provide specific details about the experiment or analysis being conducted, including the hypothesis, data collection methods, and the statistical test used.
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Time Period 1
(Oldest)
Time Period 2
Time Period 3
(Newest)
Fossil A
Fossil B
Fossil C
What can you conclude from this information?
A. Fossil C was best adapted for a dry environment because their population increased in Time Period 3.
OB. Fossil B struggled to survive in a dry environment because there are none of Fossil B in Time Period 1.
O C. Fossil C survived best in a rainy environment because there is a large population of them in Time Period 3.
OD. Fossil A was better adapted to a dry environment because there is a large population of them in Time Period 1
Answers
Answer:
Explana⊃tion:
Globular proteins are usually all EXCEPT?
a. Insoluble in water.
b. Roughly spherical.
c. Folded so that the hydrophobic amino acids are in the interior of the molecule
Answers
Globular proteins are usually insoluble in water.
In terms of structure, globular proteins are folded in such a way that their tertiary structures are made up of polar amino acids that are ordered on the exterior and the non-polar amino acids that are placed on the inside. Globular proteins are typically spherical in shape.
They are also referred to as sphero-proteins, and they have a mediocre water solubility. Because the non-polar amino acids on the inside of the protein globules, which are not in direct contact with water, make this type of protein soluble. Polar amino acids are present on the globules' exterior, where they interact with water to turn it into a soluble material.
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TRUE/FALSE. some careers emerge to address the environmental impact human behaviors and processes might be having on our planet.
Answers
True, some careers emerge to address the environmental impact human behaviors and processes might be having on our planet.
The majority of the actions people take in their everyday lives have a significant impact on the environment. These activities, from basic day-to-day processes to the products and services we use, all have an environmental impact. Environmental conservation refers to the protection, restoration, and sustainable use of environmental resources.
Environmental conservation as a career
Environmental conservation has become an industry in and of itself, with a growing demand for experts who can help conserve natural resources, implement more sustainable policies and practices, and educate others on the importance of environmental conservation. Environmental conservationists, environmental scientists, and environmental engineers are all examples of professions that deal with environmental conservation. These professions aim to improve the environment by addressing human processes and behaviors that are contributing to environmental degradation and developing new solutions to these issues.
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