251 Week 2 Quiz Exam 4 (Latest Update
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. Which structure in the cell membrane helps in cell‐to‐cell
recognition?
A. Phospholipids
B. Transport proteins
C. Glycoproteins
D. Cholesterol
Correct Answer: C
Rationale: Glycoproteins on the cell surface are involved in
recognition and signaling.
2. Which organelle produces most of the cell’s ATP?
A. Ribosome
B. Mitochondria
C. Lysosome
D. Golgi apparatus
,Correct Answer: B
Rationale: Mitochondria are responsible for cellular respiration and
ATP production.
3. Which process moves molecules from high to low concentration
without energy?
A. Active transport
B. Diffusion
C. Endocytosis
D. Exocytosis
Correct Answer: B
Rationale: Diffusion is a passive process driven by concentration
gradients.
4. Water moves across a membrane by:
A. Osmosis
B. Active transport
C. Facilitated diffusion of solutes
D. Phagocytosis
Correct Answer: A
Rationale: Osmosis is the passive movement of water across a
selectively permeable membrane.
5. Which organelle is responsible for modifying and packaging
proteins?
,A. Ribosome
B. Golgi apparatus
C. Lysosome
D. Smooth ER
Correct Answer: B
Rationale: The Golgi apparatus modifies, sorts, and packages
proteins for secretion or use.
6. Which organelle is the site of lipid synthesis and detoxification?
A. Rough ER
B. Smooth ER
C. Lysosome
D. Ribosome
Correct Answer: B
Rationale: Smooth ER synthesizes lipids and detoxifies harmful
compounds.
7. Which macromolecule is the primary component of cell
membranes?
A. Proteins
B. Carbohydrates
C. Phospholipids
D. Nucleic acids
, Correct Answer: C
Rationale: Phospholipids form the bilayer structure of the
membrane.
8. Which organelle assembles amino acids into proteins?
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Smooth ER
Correct Answer: A
Rationale: Ribosomes are responsible for protein synthesis.
9. Endocytosis involves:
A. Using ATP to export materials
B. Passive movement of molecules
C. Engulfing substances into the cell
D. Diffusion across the membrane
Correct Answer: C
Rationale: Endocytosis uses vesicles to bring substances into the
cell.
10. Which solution causes cells to gain water?
A. Hypertonic
B. Hypotonic
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. Which structure in the cell membrane helps in cell‐to‐cell
recognition?
A. Phospholipids
B. Transport proteins
C. Glycoproteins
D. Cholesterol
Correct Answer: C
Rationale: Glycoproteins on the cell surface are involved in
recognition and signaling.
2. Which organelle produces most of the cell’s ATP?
A. Ribosome
B. Mitochondria
C. Lysosome
D. Golgi apparatus
,Correct Answer: B
Rationale: Mitochondria are responsible for cellular respiration and
ATP production.
3. Which process moves molecules from high to low concentration
without energy?
A. Active transport
B. Diffusion
C. Endocytosis
D. Exocytosis
Correct Answer: B
Rationale: Diffusion is a passive process driven by concentration
gradients.
4. Water moves across a membrane by:
A. Osmosis
B. Active transport
C. Facilitated diffusion of solutes
D. Phagocytosis
Correct Answer: A
Rationale: Osmosis is the passive movement of water across a
selectively permeable membrane.
5. Which organelle is responsible for modifying and packaging
proteins?
,A. Ribosome
B. Golgi apparatus
C. Lysosome
D. Smooth ER
Correct Answer: B
Rationale: The Golgi apparatus modifies, sorts, and packages
proteins for secretion or use.
6. Which organelle is the site of lipid synthesis and detoxification?
A. Rough ER
B. Smooth ER
C. Lysosome
D. Ribosome
Correct Answer: B
Rationale: Smooth ER synthesizes lipids and detoxifies harmful
compounds.
7. Which macromolecule is the primary component of cell
membranes?
A. Proteins
B. Carbohydrates
C. Phospholipids
D. Nucleic acids
, Correct Answer: C
Rationale: Phospholipids form the bilayer structure of the
membrane.
8. Which organelle assembles amino acids into proteins?
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Smooth ER
Correct Answer: A
Rationale: Ribosomes are responsible for protein synthesis.
9. Endocytosis involves:
A. Using ATP to export materials
B. Passive movement of molecules
C. Engulfing substances into the cell
D. Diffusion across the membrane
Correct Answer: C
Rationale: Endocytosis uses vesicles to bring substances into the
cell.
10. Which solution causes cells to gain water?
A. Hypertonic
B. Hypotonic
