AnswersPA Human Anatomy Physiology A 2026-2027 SMITH ICProteins and Nucleic Acids

Proteins and Nucleic Acids Answers

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1
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The building blocks of proteins are .

A
amino acids
B
nucleotides
C
base pairs
2
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The building blocks of nucleic acids are .

A
amino acids
B
nucleotides
C
base pairs
5

The three parts of an amino acid are the amino group, the carboxyl group, and the group.

Answer:

R

7

What is the name of the bond that is created when two amino acids join?

A
hydrogen bond
B
nitrogen bond
C
peptide bond
D
ionic bond
8

Identify which scientist or group of scientists was responsible for making each of the following discoveries.The double-helix structure of DNA: The chemical composition of proteins: The monomer of nucleic acids:

Answers:
Selection 1:Watson, Crick, and Franklin
Selection 2:Mulder
Selection 3:Levene
9

The chemical composition of proteins:

Answer not available
10

The monomer of nucleic acids:

Answer not available
20

Determine whether each of the following is a characteristic of DNA, RNA, or both.Is single-stranded: Contains nitrogenous bases: Contains uracil: Contains adenine: Is double-stranded: Is made of nucleotides: Contains deoxyribose sugar:

Answers:
Selection 1:RNA
Selection 2:both
Selection 3:RNA
Selection 4:both
Selection 5:DNA
Selection 6:both
Selection 7:DNA
21

Contains nitrogenous bases:

Answer not available
22

Contains uracil:

Answer not available
23

Contains adenine:

Answer not available
24

Is double-stranded:

Answer not available
32

Is made of nucleotides:

Answer not available
33

Contains deoxyribose sugar:

Answer not available
76

Which of the following correctly lists functions of proteins?

A
transporting substances, creating proteins, and fighting disease
B
being the blueprints for life and the bases of heredity
C
providing structure, regulating cell processes, and creating movement
D
sending messages, providing structure, and creating proteins
77

Which best describes the role of nucleic acids?

A
to transmit genetic information
B
to regulate cell processes
C
to provide cellular structure
D
to fight against disease
80

Which statement best describes the relationship between proteins and nucleic acids?

A
Nucleic acids are assembled from the amino acids of proteins.
B
Nucleic acids have the code that determines which proteins are made.
C
Proteins provide the backbone from which nucleic acids are made.
81

There are twenty amino acids in living organisms. Ten of these are referred to as essential amino acids. Why are they called essential amino acids?

A
These amino acids are the only ones that are important for the body to function properly.
B
These amino acids cannot be made by the human body and must be consumed in one’s diet.
C
These amino acids are the only ones that are made by the human body.
83

What could happen if a person doesn’t get the proper amount of protein in his or her diet?

A
The impact of a diet lacking in protein would be of little consequence.
B
Stored proteins would assist in creating new amino acids that the body needs.
C
The body would break down existing muscle to get the amino acids it needs.

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