BIOS 242 Week 2 Quiz Exam 2 (Latest Update 2025 / 2026) Anatomy and Physiology IV with Lab | Questions & Answers | 100% Correct | Grade A - Chamberlain

BIOS 242 Week 2 Quiz Exam 2 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain


1. Which type of membrane protein spans the entire lipid bilayer?

A. Peripheral protein
B. Integral protein
C. Glycoprotein
D. Lipoprotein
Correct Answer: B
Rationale:Integral proteins extend through the membrane and
assist in transport and signaling.

2. Which organelle is the main site of protein synthesis?

A. Ribosome
B. Golgi apparatus
C. Lysosome
D. Smooth ER
Correct Answer: A

,Rationale:Ribosomes translate mRNA into polypeptides, forming
proteins.

3. Which organelle is responsible for packaging and sorting
proteins?

A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Lysosome
Correct Answer: C
Rationale:Golgi apparatus modifies proteins and directs them to
their final destinations.

4. Which organelle detoxifies alcohol and drugs in liver cells?

A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale:Smooth ER metabolizes toxins and synthesizes lipids.

5. Which organelle contains enzymes for intracellular digestion?

A. Lysosome
B. Peroxisome
C. Ribosome

,D. Golgi apparatus
Correct Answer: A
Rationale:Lysosomes digest macromolecules, cellular debris, and
foreign substances.

6. Which cytoskeletal component is composed of actin filaments?

A. Microtubules
B. Microfilaments
C. Intermediate filaments
D. Ribosomes
Correct Answer: B
Rationale:Microfilaments provide structural support and aid in cell
movement.

7. Which cytoskeletal structure forms cilia and flagella?

A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. Ribosomes
Correct Answer: B
Rationale:Microtubules provide the core structure for motility in
cilia and flagella.

8. Which organelle is the site of ATP production?

, A. Lysosome
B. Mitochondria
C. Smooth ER
D. Golgi apparatus
Correct Answer: B
Rationale:Mitochondria generate energy via oxidative
phosphorylation.

9. Which organelle stores calcium ions in muscle cells?

A. Rough ER
B. Smooth ER (sarcoplasmic reticulum)
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale:Sarcoplasmic reticulum releases calcium for muscle
contraction.

10. Which organelle contains DNA and controls cell activities?

A. Nucleus
B. Mitochondria
C. Ribosome
D. Golgi apparatus
Correct Answer: A
Rationale:The nucleus stores genetic material and regulates
transcription and replication.