BIOS 251 Week 4 Quiz Exam final (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organelle is responsible for ATP production?
A. Ribosome
B. Lysosome
C. Mitochondrion
D. Golgi apparatus
Correct answer: C
Rationale: Mitochondria generate ATP through oxidative
phosphorylation, providing energy for the cell.
2. Which organelle packages proteins for secretion?
A. Rough ER
B. Golgi apparatus
C. Lysosome
D. Ribosome
Correct answer: B
,Rationale: Golgi apparatus modifies and sorts proteins, then
packages them into vesicles for secretion.
3. Which organelle synthesizes proteins for secretion?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Ribosome
Correct answer: A
Rationale: Rough ER-bound ribosomes produce membrane-bound
and secretory proteins.
4. Which organelle detoxifies alcohol in liver cells?
A. Smooth ER
B. Rough ER
C. Peroxisome
D. Lysosome
Correct answer: A
Rationale: Smooth ER metabolizes alcohol and drugs in
hepatocytes.
5. Which organelle assembles ribosomal subunits?
A. Nucleolus
B. Nucleus
,C. Rough ER
D. Golgi apparatus
Correct answer: A
Rationale: Nucleolus produces rRNA and assembles ribosomal
subunits.
6. Which cytoskeletal element forms microvilli?
A. Microtubules
B. Microfilaments
C. Intermediate filaments
D. Centrioles
Correct answer: B
Rationale: Actin filaments form the core of microvilli.
7. Which cytoskeletal element forms spindle fibers during
mitosis?
A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. Actin filaments
Correct answer: B
Rationale: Microtubules form the mitotic spindle to segregate
chromosomes.
, 8. Which organelle stores calcium in muscle cells?
A. Smooth ER
B. Rough ER
C. Golgi apparatus
D. Lysosome
Correct answer: A
Rationale: Sarcoplasmic reticulum stores Ca²⁺ for muscle
contraction.
9. Which organelle contains catalase to neutralize hydrogen
peroxide?
A. Lysosome
B. Peroxisome
C. Ribosome
D. Mitochondrion
Correct answer: B
Rationale: Peroxisomes detoxify H₂O₂ generated during fatty acid
metabolism.
10. Which organelle stores genetic material?
A. Nucleus
B. Ribosome
C. Mitochondrion
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organelle is responsible for ATP production?
A. Ribosome
B. Lysosome
C. Mitochondrion
D. Golgi apparatus
Correct answer: C
Rationale: Mitochondria generate ATP through oxidative
phosphorylation, providing energy for the cell.
2. Which organelle packages proteins for secretion?
A. Rough ER
B. Golgi apparatus
C. Lysosome
D. Ribosome
Correct answer: B
,Rationale: Golgi apparatus modifies and sorts proteins, then
packages them into vesicles for secretion.
3. Which organelle synthesizes proteins for secretion?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Ribosome
Correct answer: A
Rationale: Rough ER-bound ribosomes produce membrane-bound
and secretory proteins.
4. Which organelle detoxifies alcohol in liver cells?
A. Smooth ER
B. Rough ER
C. Peroxisome
D. Lysosome
Correct answer: A
Rationale: Smooth ER metabolizes alcohol and drugs in
hepatocytes.
5. Which organelle assembles ribosomal subunits?
A. Nucleolus
B. Nucleus
,C. Rough ER
D. Golgi apparatus
Correct answer: A
Rationale: Nucleolus produces rRNA and assembles ribosomal
subunits.
6. Which cytoskeletal element forms microvilli?
A. Microtubules
B. Microfilaments
C. Intermediate filaments
D. Centrioles
Correct answer: B
Rationale: Actin filaments form the core of microvilli.
7. Which cytoskeletal element forms spindle fibers during
mitosis?
A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. Actin filaments
Correct answer: B
Rationale: Microtubules form the mitotic spindle to segregate
chromosomes.
, 8. Which organelle stores calcium in muscle cells?
A. Smooth ER
B. Rough ER
C. Golgi apparatus
D. Lysosome
Correct answer: A
Rationale: Sarcoplasmic reticulum stores Ca²⁺ for muscle
contraction.
9. Which organelle contains catalase to neutralize hydrogen
peroxide?
A. Lysosome
B. Peroxisome
C. Ribosome
D. Mitochondrion
Correct answer: B
Rationale: Peroxisomes detoxify H₂O₂ generated during fatty acid
metabolism.
10. Which organelle stores genetic material?
A. Nucleus
B. Ribosome
C. Mitochondrion
