All of the amino acids that are used to synthesize human proteins (with the exception of...
- All of the amino acids that are used to synthesize human proteins (with the exception of glycine) have which one of the following in common?
- An aromatic group
- A hydroxyl group
- An asymmetric carbon in the D-configuration
- An asymmetric carbon in the L-configuration
- An asymmetric β-carbon
Please explain the reasoning behind the correct answer.
Homework Answers
Answer is d).
Amino acid contain Amino and carboxy groups. Both of these groups are present on same alpha carbon which is asymmetric and have configuration L. Nature contain L-amino acid in majority.
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All of the amino acids that are used to synthesize
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Which of the following are true of the 20 common amino acids? Pick ALL that apply....
Which of the following are true of the 20 common amino acids? Pick ALL that apply. A. They are polymers used to make proteins. B. They are β-amino acids. C. They all have the same carboxylic acid group. D. They all have the same R-group. E. They all have the same amino group.
Biochemistry 1: Two amino acids have chiral carbons in their side chains (R group). Identify these...
Biochemistry 1: Two amino acids have chiral carbons in their side chains (R group). Identify these amino acids and draw the structures of all of the possible stereoisomers of these amino acids. The amino acid with a hydroxyl group is found in proteins with the (2S, 3R) configuration and the other amino acid is found in proteins with the (2S, 3S) configuration. Circle the structures in your answer above that correspond to these isomers.
“Amino acids used in making a polypeptide have an amino group and carboxyl group, and these...
“Amino acids used in making a polypeptide have an amino group and carboxyl group, and these groups can be present on any carbon atoms.” Is that a correct statement? Why so? What is the basis for classification of amino acids to non-polar (but not aromatic), polar, and two oppositely charged (at physiological pH) amino acids? Provide examples with their exact name, three letter and single letter codes.
All amino acids have a carboxyl group, an amino group and almost all alpha amino acids...
All amino acids have a carboxyl group, an amino group and almost all alpha amino acids in proteins are of the L- family. True or False
All amino acids in proteins are Select one: O a. alpha-amino acid O b. (R)-amino acids...
All amino acids in proteins are Select one: O a. alpha-amino acid O b. (R)-amino acids c. acidic O d chiral
All amino acids in proteins are Select one: O a. (R)-amino acids b. chiral c. alpha-amino...
All amino acids in proteins are Select one: O a. (R)-amino acids b. chiral c. alpha-amino acid O 0 d. acidic
2. what is the configuration of almost all naturally occurring amino acids at the a (alpha)...
2. what is the configuration of almost all naturally occurring amino acids at the a (alpha) carbon 3. why is an alpha amino acid such as alanine more acidic than a regular carboxyllic acid 4. strecker synthesis Formation dl-phenylalanine 5. outline the steps to synthesize the simple dipeptide AL (think about two amino acids that begin with an A and an L) 6. give the structure and name of the nucleosides in dna and rna 7. give the structure of...
Question 1 (1 point) Amino acids used in proteins generally are L-amino acids neither L nor...
Question 1 (1 point) Amino acids used in proteins generally are L-amino acids neither L nor D amino acids both L and D amino acids D-amino acids Question 2 (1 point) o be Polar R groups, along with acidic and basic R groups are said Question 2 (1 point) Polar R groups, along with acidic and basic R groups, are said to be.because the are attracted to water molecules. hydrophobic hydrophilic ionized unreactive Question 3 (1 point) Which of the...
Which of the following is an acceptable term/name used for a molecule in which two carbons...
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1. Which of the following is not true of amino acids? a) Your intestines do not...
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All amino acids in proteins are Select one: O a. alpha-amino acid O b. (R)-amino acids c. acidic O d chiral
All amino acids in proteins are Select one: O a. (R)-amino acids b. chiral c. alpha-amino acid O 0 d. acidic
2. what is the configuration of almost all naturally occurring amino acids at the a (alpha) carbon 3. why is an alpha amino acid such as alanine more acidic than a regular carboxyllic acid 4. strecker synthesis Formation dl-phenylalanine 5. outline the steps to synthesize the simple dipeptide AL (think about two amino acids that begin with an A and an L) 6. give the structure and name of the nucleosides in dna and rna 7. give the structure of...
Question 1 (1 point) Amino acids used in proteins generally are L-amino acids neither L nor D amino acids both L and D amino acids D-amino acids Question 2 (1 point) o be Polar R groups, along with acidic and basic R groups are said Question 2 (1 point) Polar R groups, along with acidic and basic R groups, are said to be.because the are attracted to water molecules. hydrophobic hydrophilic ionized unreactive Question 3 (1 point) Which of the...
Which of the following is an acceptable term/name used for a molecule in which two carbons of glycerol are attached to fatty acid chains, and the third carbon of glycerol is attached to a phosphate group? C sphingomyelin C phospholipid C phosphosteroid C triacylglycerol A nucleotide is different from a nucleoside because a nucleotide has C a ribose sugar. C a deoxyribose sugar. C at least one phosphate group. nitrogen-containing base. Most types of molecules in the cell have asymmetric...
1. Which of the following is not true of amino acids? a) Your intestines do not absorb proteins, only the amino acids released by hydrolysis of these proteins. b) A normal, natural, unprocessed diet does not contain proteins, only the free amino acids. c) Amino acids are NEEDED for making your proteins. d) Amino acids are NEEDED for making the nitrogenous bases of your nucleic acids. e) In you, amino acids are not stored as protein. 2. Which of the...
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