BIOS 251 Week 4 Quiz Exam 3 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organelle is the main site of ATP production?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Golgi apparatus
Correct answer: C
Rationale: Mitochondria generate ATP through oxidative
phosphorylation, supplying energy for cellular processes.
2. Which organelle modifies and packages proteins for secretion?
A. Rough ER
B. Golgi apparatus
C. Lysosome
D. Ribosome
Correct answer: B
,Rationale: Golgi apparatus processes proteins from the ER and
sorts them into vesicles for transport.
3. Which organelle is the site of protein translation?
A. Ribosome
B. Nucleus
C. Lysosome
D. Mitochondrion
Correct answer: A
Rationale: Ribosomes translate mRNA into polypeptides, producing
functional proteins.
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 synthesizes 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 and old
organelles.
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 assists in protein folding and quality control?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Ribosome
Correct answer: A
, Rationale: Rough ER ensures proteins are correctly folded before
secretion.
8. Which organelle stores genetic material as chromatin?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Lysosome
Correct answer: A
Rationale: Chromatin in the nucleus stores DNA and associated
proteins.
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 semi-
independently of the nucleus.
10. Which cytoskeletal element provides tracks for vesicle
transport?
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organelle is the main site of ATP production?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Golgi apparatus
Correct answer: C
Rationale: Mitochondria generate ATP through oxidative
phosphorylation, supplying energy for cellular processes.
2. Which organelle modifies and packages proteins for secretion?
A. Rough ER
B. Golgi apparatus
C. Lysosome
D. Ribosome
Correct answer: B
,Rationale: Golgi apparatus processes proteins from the ER and
sorts them into vesicles for transport.
3. Which organelle is the site of protein translation?
A. Ribosome
B. Nucleus
C. Lysosome
D. Mitochondrion
Correct answer: A
Rationale: Ribosomes translate mRNA into polypeptides, producing
functional proteins.
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 synthesizes 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 and old
organelles.
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 assists in protein folding and quality control?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Ribosome
Correct answer: A
, Rationale: Rough ER ensures proteins are correctly folded before
secretion.
8. Which organelle stores genetic material as chromatin?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Lysosome
Correct answer: A
Rationale: Chromatin in the nucleus stores DNA and associated
proteins.
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 semi-
independently of the nucleus.
10. Which cytoskeletal element provides tracks for vesicle
transport?
