BIOS 252 Midterm Exam final (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which phase of the cell cycle is primarily for cell growth?
A. G1
B. S
C. G2
D. M
Correct Answer: A
Rationale: G1 phase is a period of cell growth and preparation for
DNA replication.
2. During which phase of mitosis do chromosomes align at the cell
equator?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Correct Answer: B
,Rationale: In metaphase, chromosomes line up along the metaphase
plate before separation.
3. Which organelle contains digestive enzymes?
A. Lysosome
B. Golgi apparatus
C. Ribosome
D. Smooth ER
Correct Answer: A
Rationale: Lysosomes degrade macromolecules, damaged
organelles, and pathogens.
4. Which organelle synthesizes lipids and steroid hormones?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: Smooth ER is responsible for lipid synthesis and steroid
hormone production.
5. Which organelle modifies and packages proteins for secretion?
A. Golgi apparatus
B. Rough ER
C. Smooth ER
,D. Ribosome
Correct Answer: A
Rationale: Proteins from rough ER are processed and packaged in
the Golgi apparatus.
6. Which organelle generates ATP through oxidative
phosphorylation?
A. Mitochondria
B. Lysosome
C. Golgi apparatus
D. Smooth ER
Correct Answer: A
Rationale: Mitochondria produce energy via the electron transport
chain.
7. Which organelle stores calcium for muscle contraction?
A. Sarcoplasmic reticulum
B. Nucleus
C. Smooth ER
D. Golgi apparatus
Correct Answer: A
Rationale: Calcium release from sarcoplasmic reticulum triggers
contraction.
8. Which organelle assembles ribosomal subunits?
, A. Nucleolus
B. Nucleus
C. Ribosome
D. Golgi apparatus
Correct Answer: A
Rationale: Ribosomal RNA is synthesized and ribosomal subunits
assembled in the nucleolus.
9. Which organelle detoxifies hydrogen peroxide?
A. Peroxisome
B. Lysosome
C. Mitochondria
D. Smooth ER
Correct Answer: A
Rationale: Peroxisomes convert hydrogen peroxide into water and
oxygen using catalase.
10. Which organelle produces proteins for secretion?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Ribosome
Correct Answer: A
Rationale: Ribosomes on rough ER synthesize proteins destined for
export.
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which phase of the cell cycle is primarily for cell growth?
A. G1
B. S
C. G2
D. M
Correct Answer: A
Rationale: G1 phase is a period of cell growth and preparation for
DNA replication.
2. During which phase of mitosis do chromosomes align at the cell
equator?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Correct Answer: B
,Rationale: In metaphase, chromosomes line up along the metaphase
plate before separation.
3. Which organelle contains digestive enzymes?
A. Lysosome
B. Golgi apparatus
C. Ribosome
D. Smooth ER
Correct Answer: A
Rationale: Lysosomes degrade macromolecules, damaged
organelles, and pathogens.
4. Which organelle synthesizes lipids and steroid hormones?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: Smooth ER is responsible for lipid synthesis and steroid
hormone production.
5. Which organelle modifies and packages proteins for secretion?
A. Golgi apparatus
B. Rough ER
C. Smooth ER
,D. Ribosome
Correct Answer: A
Rationale: Proteins from rough ER are processed and packaged in
the Golgi apparatus.
6. Which organelle generates ATP through oxidative
phosphorylation?
A. Mitochondria
B. Lysosome
C. Golgi apparatus
D. Smooth ER
Correct Answer: A
Rationale: Mitochondria produce energy via the electron transport
chain.
7. Which organelle stores calcium for muscle contraction?
A. Sarcoplasmic reticulum
B. Nucleus
C. Smooth ER
D. Golgi apparatus
Correct Answer: A
Rationale: Calcium release from sarcoplasmic reticulum triggers
contraction.
8. Which organelle assembles ribosomal subunits?
, A. Nucleolus
B. Nucleus
C. Ribosome
D. Golgi apparatus
Correct Answer: A
Rationale: Ribosomal RNA is synthesized and ribosomal subunits
assembled in the nucleolus.
9. Which organelle detoxifies hydrogen peroxide?
A. Peroxisome
B. Lysosome
C. Mitochondria
D. Smooth ER
Correct Answer: A
Rationale: Peroxisomes convert hydrogen peroxide into water and
oxygen using catalase.
10. Which organelle produces proteins for secretion?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Ribosome
Correct Answer: A
Rationale: Ribosomes on rough ER synthesize proteins destined for
export.
