251 Week 3 Quiz Exam 3 (Latest Update
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. Which macromolecule provides the primary source of energy
for cells?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic acids
Correct Answer: C
Rationale: Carbohydrates are the main source of glucose, which
cells use for energy.
2. Which macromolecule stores genetic information?
A. Proteins
B. Carbohydrates
C. Lipids
D. Nucleic acids
Correct Answer: D
Rationale: DNA and RNA store and transmit genetic information.
,3. Which macromolecule is a major component of cell
membranes?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids
Correct Answer: C
Rationale: Phospholipids form the bilayer of cell membranes.
4. Which macromolecule functions as enzymes?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids
Correct Answer: B
Rationale: Proteins act as catalysts in biochemical reactions.
5. Which carbohydrate is used for short-term energy storage in
animals?
A. Starch
B. Glycogen
C. Cellulose
D. Chitin
,Correct Answer: B
Rationale: Glycogen is stored in liver and muscle for rapid energy
use.
6. Which carbohydrate forms plant cell walls?
A. Glycogen
B. Starch
C. Cellulose
D. Chitin
Correct Answer: C
Rationale: Cellulose provides structural support in plant cell walls.
7. Which lipid serves as a long-term energy storage?
A. Phospholipid
B. Steroid
C. Triglyceride
D. Glycolipid
Correct Answer: C
Rationale: Triglycerides store energy efficiently in adipose tissue.
8. Which lipid is a component of steroid hormones?
A. Phospholipid
B. Triglyceride
, C. Steroid
D. Glycolipid
Correct Answer: C
Rationale: Steroids include hormones like estrogen, testosterone,
and cortisol.
9. Which functional group is found in amino acids?
A. Carboxyl and amino
B. Hydroxyl and phosphate
C. Carbonyl only
D. Methyl only
Correct Answer: A
Rationale: Amino acids contain an amino (-NH2) and a carboxyl (-
COOH) group.
10. Which structure is the site of protein synthesis?
A. Mitochondria
B. Nucleus
C. Ribosome
D. Endoplasmic reticulum
Correct Answer: C
Rationale: Ribosomes assemble amino acids into polypeptides.
11. Which organelle is the site of ATP production?
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. Which macromolecule provides the primary source of energy
for cells?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic acids
Correct Answer: C
Rationale: Carbohydrates are the main source of glucose, which
cells use for energy.
2. Which macromolecule stores genetic information?
A. Proteins
B. Carbohydrates
C. Lipids
D. Nucleic acids
Correct Answer: D
Rationale: DNA and RNA store and transmit genetic information.
,3. Which macromolecule is a major component of cell
membranes?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids
Correct Answer: C
Rationale: Phospholipids form the bilayer of cell membranes.
4. Which macromolecule functions as enzymes?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids
Correct Answer: B
Rationale: Proteins act as catalysts in biochemical reactions.
5. Which carbohydrate is used for short-term energy storage in
animals?
A. Starch
B. Glycogen
C. Cellulose
D. Chitin
,Correct Answer: B
Rationale: Glycogen is stored in liver and muscle for rapid energy
use.
6. Which carbohydrate forms plant cell walls?
A. Glycogen
B. Starch
C. Cellulose
D. Chitin
Correct Answer: C
Rationale: Cellulose provides structural support in plant cell walls.
7. Which lipid serves as a long-term energy storage?
A. Phospholipid
B. Steroid
C. Triglyceride
D. Glycolipid
Correct Answer: C
Rationale: Triglycerides store energy efficiently in adipose tissue.
8. Which lipid is a component of steroid hormones?
A. Phospholipid
B. Triglyceride
, C. Steroid
D. Glycolipid
Correct Answer: C
Rationale: Steroids include hormones like estrogen, testosterone,
and cortisol.
9. Which functional group is found in amino acids?
A. Carboxyl and amino
B. Hydroxyl and phosphate
C. Carbonyl only
D. Methyl only
Correct Answer: A
Rationale: Amino acids contain an amino (-NH2) and a carboxyl (-
COOH) group.
10. Which structure is the site of protein synthesis?
A. Mitochondria
B. Nucleus
C. Ribosome
D. Endoplasmic reticulum
Correct Answer: C
Rationale: Ribosomes assemble amino acids into polypeptides.
11. Which organelle is the site of ATP production?
