Homework Answers
In an amino acid (except glycine), there is a chiral carbon (because four different groups are attached to that carbon) so two enantiomers of the amino acid can exist i.e. D- (dextrorotatory) and L-(laevorotatory) forms. But only the L-form of the amino acid can be utilised by the cells to produce proteins. So option b. is correct.
Please see:
Dextrorotatory enantiomer can rotate plane of polarised light passing through it to the right whereas laevorotatory enantiomer can rotate plane of polarised light passing through it to left.
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The amino acids which occur in most proteins are a. none. b. all of the L-form....
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...
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
In nature, which is the most commonly found isomer, L-amino acids or D-amino acids? O D-amino...
In nature, which is the most commonly found isomer, L-amino acids or D-amino acids? O D-amino acids L-amino acius Submit Request Answer
Which of the following amino acids can form crosslinks in proteins or cyclize peptides? C S...
Which of the following amino acids can form crosslinks in proteins or cyclize peptides? C S T M
1. Which of the following is not true of amino acids? a) Your intestines do not...
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...
Identify ALL of the following that are function of proteins/amino acids in the body: required...
Identify ALL of the following that are function of proteins/amino acids in the body: required for absorption of water-soluble nutrients; tunnels used for absorption are proteins travel through the GI tract undigested and "feed" the bacterial flora in your large intestine immunity; for example, antibodies are proteins the first choice of energy for most cells omega-3s are essential amino acids that reduce inflammation part of phospholipid structure enzymes are proteins keeping fluid...
Which kind of bonds occur in proteins between consecutive amino acids? A.phosphodiester bonds B.condensation bonds C.peptide...
Which kind of bonds occur in proteins between consecutive amino acids? A.phosphodiester bonds B.condensation bonds C.peptide bonds D.ionic bonds E.hydrogen bonds
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino...
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino acids none of the above Question 2 (0.5 points) Which two functional groups does an amino acid contain? amine and carboxylic acid carboxylic acid and amide amide and heterocyclic ring heterocyclic ring and amine Question 3 (0.5 points) Do amino acids commonly exist in nature as neutral molecules with all uncharged atoms? Yes No Question 1 (0.5 points) What is a protein? A polymer...
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.
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...
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
In nature, which is the most commonly found isomer, L-amino acids or D-amino acids? O D-amino acids L-amino acius Submit Request Answer
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...
Question 1 (0.5 points) Saved Proteins are formed by joining together. carboxylic acids fatty acids amino acids none of the above Question 2 (0.5 points) Which two functional groups does an amino acid contain? amine and carboxylic acid carboxylic acid and amide amide and heterocyclic ring heterocyclic ring and amine Question 3 (0.5 points) Do amino acids commonly exist in nature as neutral molecules with all uncharged atoms? Yes No Question 1 (0.5 points) What is a protein? A polymer...
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