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BSC1010 CH 5 EXAM QUESTIONS AND VERIFIED CORRECT ANSWERS. LATEST UPDATE
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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? -Am...

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  • September 22, 2024
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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 _________.

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