251 Week 2 Quiz Exam 1(Latest Update
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. Which part of the cell membrane is primarily responsible for
selective permeability?
A. Phospholipid bilayer
B. Integral proteins
C. Cholesterol
D. Glycoproteins
Correct Answer: B
Rationale: Integral proteins act as channels and transporters,
controlling which molecules pass through.
2. Osmosis is the movement of:
A. Solute molecules from high to low concentration
B. Water molecules across a selectively permeable membrane
C. Ions through active transport
D. Macromolecules via vesicles
,Correct Answer: B
Rationale: Osmosis specifically refers to the passive movement of
water.
3. Which organelle is responsible for breaking down fatty acids
and detoxifying chemicals?
A. Smooth ER
B. Rough ER
C. Lysosome
D. Golgi apparatus
Correct Answer: A
Rationale: Smooth ER metabolizes lipids and detoxifies substances.
4. The sodium-potassium pump moves ions:
A. Passively with the gradient
B. Actively against the gradient
C. Only during mitosis
D. Via vesicles
Correct Answer: B
Rationale: The Na⁺/K⁺ pump uses ATP to transport ions against
their concentration gradients.
5. Endocytosis is a process by which cells:
,A. Expel materials
B. Take in materials via vesicles
C. Diffuse molecules passively
D. Produce energy
Correct Answer: B
Rationale: Endocytosis allows cells to engulf substances in vesicles.
6. Exocytosis is primarily used for:
A. Importing molecules
B. Exporting substances like hormones
C. Passive diffusion
D. Osmosis
Correct Answer: B
Rationale: Exocytosis releases materials from the cell to the
extracellular space.
7. Which organelle contains hydrolytic enzymes for intracellular
digestion?
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Smooth ER
, Correct Answer: B
Rationale: Lysosomes break down macromolecules and cellular
debris.
8. Which organelle modifies, sorts, and packages proteins?
A. Golgi apparatus
B. Ribosome
C. Lysosome
D. Smooth ER
Correct Answer: A
Rationale: Golgi apparatus processes proteins for transport within
or outside the cell.
9. Which organelle produces ATP?
A. Ribosome
B. Mitochondria
C. Lysosome
D. Golgi apparatus
Correct Answer: B
Rationale: Mitochondria generate cellular energy through
respiration.
10. Which type of transport does not require energy?
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. Which part of the cell membrane is primarily responsible for
selective permeability?
A. Phospholipid bilayer
B. Integral proteins
C. Cholesterol
D. Glycoproteins
Correct Answer: B
Rationale: Integral proteins act as channels and transporters,
controlling which molecules pass through.
2. Osmosis is the movement of:
A. Solute molecules from high to low concentration
B. Water molecules across a selectively permeable membrane
C. Ions through active transport
D. Macromolecules via vesicles
,Correct Answer: B
Rationale: Osmosis specifically refers to the passive movement of
water.
3. Which organelle is responsible for breaking down fatty acids
and detoxifying chemicals?
A. Smooth ER
B. Rough ER
C. Lysosome
D. Golgi apparatus
Correct Answer: A
Rationale: Smooth ER metabolizes lipids and detoxifies substances.
4. The sodium-potassium pump moves ions:
A. Passively with the gradient
B. Actively against the gradient
C. Only during mitosis
D. Via vesicles
Correct Answer: B
Rationale: The Na⁺/K⁺ pump uses ATP to transport ions against
their concentration gradients.
5. Endocytosis is a process by which cells:
,A. Expel materials
B. Take in materials via vesicles
C. Diffuse molecules passively
D. Produce energy
Correct Answer: B
Rationale: Endocytosis allows cells to engulf substances in vesicles.
6. Exocytosis is primarily used for:
A. Importing molecules
B. Exporting substances like hormones
C. Passive diffusion
D. Osmosis
Correct Answer: B
Rationale: Exocytosis releases materials from the cell to the
extracellular space.
7. Which organelle contains hydrolytic enzymes for intracellular
digestion?
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Smooth ER
, Correct Answer: B
Rationale: Lysosomes break down macromolecules and cellular
debris.
8. Which organelle modifies, sorts, and packages proteins?
A. Golgi apparatus
B. Ribosome
C. Lysosome
D. Smooth ER
Correct Answer: A
Rationale: Golgi apparatus processes proteins for transport within
or outside the cell.
9. Which organelle produces ATP?
A. Ribosome
B. Mitochondria
C. Lysosome
D. Golgi apparatus
Correct Answer: B
Rationale: Mitochondria generate cellular energy through
respiration.
10. Which type of transport does not require energy?
