BIOS 251 Week 4 Quiz Exam 4 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organelle is primarily responsible for ATP production?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Lysosome
Correct answer: C
Rationale: Mitochondria generate ATP via oxidative
phosphorylation, providing energy for cellular functions.
2. Which organelle packages and sorts proteins for secretion?
A. Rough ER
B. Golgi apparatus
C. Lysosome
D. Smooth ER
Correct answer: B
,Rationale: Golgi apparatus modifies proteins from the ER and sorts
them into vesicles for transport.
3. Which organelle is the site of protein synthesis?
A. Ribosome
B. Nucleus
C. Lysosome
D. Mitochondrion
Correct answer: A
Rationale: Ribosomes translate mRNA into proteins for cellular use.
4. Which organelle synthesizes lipids and detoxifies chemicals?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Lysosome
Correct answer: B
Rationale: Smooth ER produces lipids and detoxifies drugs and
toxins.
5. Which organelle contains hydrolytic enzymes for intracellular
digestion?
A. Lysosome
B. Golgi apparatus
,C. Ribosome
D. Peroxisome
Correct answer: A
Rationale: Lysosomes break down macromolecules, old organelles,
and cellular debris.
6. Which organelle detoxifies hydrogen peroxide?
A. Lysosome
B. Peroxisome
C. Ribosome
D. Mitochondrion
Correct answer: B
Rationale: Peroxisomes contain catalase that converts H₂O₂ to
water and oxygen.
7. Which organelle ensures proper folding of proteins?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Ribosome
Correct answer: A
Rationale: Rough ER provides chaperones for correct protein
folding.
, 8. Which organelle stores genetic material as chromatin?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Lysosome
Correct answer: A
Rationale: DNA in the nucleus is organized as chromatin for
transcription and replication.
9. Which organelle has a double membrane and its own DNA?
A. Ribosome
B. Mitochondrion
C. Lysosome
D. Golgi apparatus
Correct answer: B
Rationale: Mitochondria contain circular DNA and replicate
independently.
10. Which cytoskeletal element forms tracks for vesicle transport?
A. Microtubules
B. Microfilaments
C. Intermediate filaments
D. Actin filaments
Correct answer: A
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organelle is primarily responsible for ATP production?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Lysosome
Correct answer: C
Rationale: Mitochondria generate ATP via oxidative
phosphorylation, providing energy for cellular functions.
2. Which organelle packages and sorts proteins for secretion?
A. Rough ER
B. Golgi apparatus
C. Lysosome
D. Smooth ER
Correct answer: B
,Rationale: Golgi apparatus modifies proteins from the ER and sorts
them into vesicles for transport.
3. Which organelle is the site of protein synthesis?
A. Ribosome
B. Nucleus
C. Lysosome
D. Mitochondrion
Correct answer: A
Rationale: Ribosomes translate mRNA into proteins for cellular use.
4. Which organelle synthesizes lipids and detoxifies chemicals?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Lysosome
Correct answer: B
Rationale: Smooth ER produces lipids and detoxifies drugs and
toxins.
5. Which organelle contains hydrolytic enzymes for intracellular
digestion?
A. Lysosome
B. Golgi apparatus
,C. Ribosome
D. Peroxisome
Correct answer: A
Rationale: Lysosomes break down macromolecules, old organelles,
and cellular debris.
6. Which organelle detoxifies hydrogen peroxide?
A. Lysosome
B. Peroxisome
C. Ribosome
D. Mitochondrion
Correct answer: B
Rationale: Peroxisomes contain catalase that converts H₂O₂ to
water and oxygen.
7. Which organelle ensures proper folding of proteins?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Ribosome
Correct answer: A
Rationale: Rough ER provides chaperones for correct protein
folding.
, 8. Which organelle stores genetic material as chromatin?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Lysosome
Correct answer: A
Rationale: DNA in the nucleus is organized as chromatin for
transcription and replication.
9. Which organelle has a double membrane and its own DNA?
A. Ribosome
B. Mitochondrion
C. Lysosome
D. Golgi apparatus
Correct answer: B
Rationale: Mitochondria contain circular DNA and replicate
independently.
10. Which cytoskeletal element forms tracks for vesicle transport?
A. Microtubules
B. Microfilaments
C. Intermediate filaments
D. Actin filaments
Correct answer: A
