BIOS 242 Lab Exam 4 (Latest Update
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. Which microscope is best for observing living cells without
staining?
A. Phase-contrast
B. Transmission electron
C. Scanning electron
D. Fluorescence
Correct Answer: A
Rationale: Phase-contrast microscopes enhance contrast in live
cells without staining.
2. Which microscope uses electrons to visualize internal cell
structures?
A. Transmission electron
B. Scanning electron
C. Light
D. Phase-contrast
Correct Answer: A
,Rationale: TEM provides high-resolution images of internal
organelles.
3. Which microscope provides a 3D view of the surface?
A. Scanning electron
B. Transmission electron
C. Light
D. Phase-contrast
Correct Answer: A
Rationale: SEM scans the surface and produces a three-
dimensional image.
4. Which knob is used for coarse focusing under low power?
A. Coarse focus
B. Fine focus
C. Diaphragm
D. Condenser
Correct Answer: A
Rationale: Coarse focus moves the stage quickly to bring the
specimen into view.
5. Which knob is used for fine focusing under high power?
A. Fine focus
B. Coarse focus
C. Diaphragm
,D. Stage adjustment
Correct Answer: A
Rationale: Fine focus allows precise focusing without damaging the
slide.
6. Which organelle is the site of ATP production?
A. Mitochondria
B. Ribosome
C. Lysosome
D. Golgi apparatus
Correct Answer: A
Rationale: Mitochondria convert glucose and oxygen into ATP.
7. Which organelle modifies and packages proteins?
A. Golgi apparatus
B. Ribosome
C. Lysosome
D. Smooth ER
Correct Answer: A
Rationale: Golgi apparatus processes proteins and prepares them
for secretion.
8. Which organelle contains hydrolytic enzymes to digest cellular
waste?
, A. Lysosome
B. Ribosome
C. Golgi apparatus
D. Mitochondria
Correct Answer: A
Rationale: Lysosomes break down macromolecules and worn-out
organelles.
9. Which organelle synthesizes proteins?
A. Ribosome
B. Smooth ER
C. Golgi
D. Lysosome
Correct Answer: A
Rationale: Ribosomes translate mRNA into polypeptides.
10. Which organelle synthesizes lipids and detoxifies chemicals?
A. Smooth ER
B. Rough ER
C. Golgi
D. Lysosome
Correct Answer: A
Rationale: Smooth ER is responsible for lipid production and
detoxification.
11. Which epithelium lines the alveoli for gas exchange?
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. Which microscope is best for observing living cells without
staining?
A. Phase-contrast
B. Transmission electron
C. Scanning electron
D. Fluorescence
Correct Answer: A
Rationale: Phase-contrast microscopes enhance contrast in live
cells without staining.
2. Which microscope uses electrons to visualize internal cell
structures?
A. Transmission electron
B. Scanning electron
C. Light
D. Phase-contrast
Correct Answer: A
,Rationale: TEM provides high-resolution images of internal
organelles.
3. Which microscope provides a 3D view of the surface?
A. Scanning electron
B. Transmission electron
C. Light
D. Phase-contrast
Correct Answer: A
Rationale: SEM scans the surface and produces a three-
dimensional image.
4. Which knob is used for coarse focusing under low power?
A. Coarse focus
B. Fine focus
C. Diaphragm
D. Condenser
Correct Answer: A
Rationale: Coarse focus moves the stage quickly to bring the
specimen into view.
5. Which knob is used for fine focusing under high power?
A. Fine focus
B. Coarse focus
C. Diaphragm
,D. Stage adjustment
Correct Answer: A
Rationale: Fine focus allows precise focusing without damaging the
slide.
6. Which organelle is the site of ATP production?
A. Mitochondria
B. Ribosome
C. Lysosome
D. Golgi apparatus
Correct Answer: A
Rationale: Mitochondria convert glucose and oxygen into ATP.
7. Which organelle modifies and packages proteins?
A. Golgi apparatus
B. Ribosome
C. Lysosome
D. Smooth ER
Correct Answer: A
Rationale: Golgi apparatus processes proteins and prepares them
for secretion.
8. Which organelle contains hydrolytic enzymes to digest cellular
waste?
, A. Lysosome
B. Ribosome
C. Golgi apparatus
D. Mitochondria
Correct Answer: A
Rationale: Lysosomes break down macromolecules and worn-out
organelles.
9. Which organelle synthesizes proteins?
A. Ribosome
B. Smooth ER
C. Golgi
D. Lysosome
Correct Answer: A
Rationale: Ribosomes translate mRNA into polypeptides.
10. Which organelle synthesizes lipids and detoxifies chemicals?
A. Smooth ER
B. Rough ER
C. Golgi
D. Lysosome
Correct Answer: A
Rationale: Smooth ER is responsible for lipid production and
detoxification.
11. Which epithelium lines the alveoli for gas exchange?
