BSC1010 CH 5 EXAM QUESTIONS AND VERIFIED
CORRECT ANSWERS. LATEST UPDATE
Which polymers are composed of amino acids?
Proteins
Which of the following is attached to the central carbon atom in an amino acid?
R group, amino group, carboxyl group
Which part of an amino acid is always acidic?
-Amino functional group
-Carboxyl functional group
-Side chain ("R group")
-None of the above
Carboxyl functional group
(The carboxyl group (COOH) contains two oxygen atoms that tend to pull electrons away from the
hydrogen atom, so this group tends to lose a proton and is acidic)
Which monomers make up RNA?
Nucleotides
True or false? Enzymes in the digestive tract catalyze hydrolysis reactions.
, True
(Enzymes in the digestive tract break down food molecules, which is a process that occurs by hydrolysis.)
Which of the following statements about the formation of polypeptides from amino acids is true?
-The reaction occurs through the addition of a water molecule to the amino acids.
-A bond forms between the carboxyl functional group of one amino acid and the amino functional
group of the other amino acid.
-A bond can form between any carbon and nitrogen atom in the two amino acids being joined.
-Polypeptides form by condensation or hydrolysis reactions
A bond forms between the carboxyl functional group of one amino acid and the amino functional group
of the other amino acid.
(A hydroxyl group is removed from the carboxyl group of one amino acid and hydrogen is removed from
the amino group of the other amino acid, allowing a bond to form between the two groups)
Protein molecules are polymers (chains) of __________.
Amino acid molecules
Nitrogenous bases are classified as either purines or pyrimidines. Examples of purines are __________.
Adenine and Guanine
Purines and Pyrimidines
AG
and
CAT
The proper three-dimensional shape and folding of a protein is assisted by _________.
CORRECT ANSWERS. LATEST UPDATE
Which polymers are composed of amino acids?
Proteins
Which of the following is attached to the central carbon atom in an amino acid?
R group, amino group, carboxyl group
Which part of an amino acid is always acidic?
-Amino functional group
-Carboxyl functional group
-Side chain ("R group")
-None of the above
Carboxyl functional group
(The carboxyl group (COOH) contains two oxygen atoms that tend to pull electrons away from the
hydrogen atom, so this group tends to lose a proton and is acidic)
Which monomers make up RNA?
Nucleotides
True or false? Enzymes in the digestive tract catalyze hydrolysis reactions.
, True
(Enzymes in the digestive tract break down food molecules, which is a process that occurs by hydrolysis.)
Which of the following statements about the formation of polypeptides from amino acids is true?
-The reaction occurs through the addition of a water molecule to the amino acids.
-A bond forms between the carboxyl functional group of one amino acid and the amino functional
group of the other amino acid.
-A bond can form between any carbon and nitrogen atom in the two amino acids being joined.
-Polypeptides form by condensation or hydrolysis reactions
A bond forms between the carboxyl functional group of one amino acid and the amino functional group
of the other amino acid.
(A hydroxyl group is removed from the carboxyl group of one amino acid and hydrogen is removed from
the amino group of the other amino acid, allowing a bond to form between the two groups)
Protein molecules are polymers (chains) of __________.
Amino acid molecules
Nitrogenous bases are classified as either purines or pyrimidines. Examples of purines are __________.
Adenine and Guanine
Purines and Pyrimidines
AG
and
CAT
The proper three-dimensional shape and folding of a protein is assisted by _________.
