BIOS 255 Week 3 Quiz Exam 1 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. What is the basic structural unit of life?
A. Atom
B. Cell
C. Tissue
D. Organ
Correct Answer: B
Rationale: The cell is the fundamental unit of structure and
function in living organisms.
2. Which organelle is the site of protein synthesis?
A. Mitochondria
B. Ribosome
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: Ribosomes translate mRNA into proteins.
,3. Which organelle modifies and packages proteins for export?
A. Endoplasmic reticulum
B. Ribosome
C. Golgi apparatus
D. Nucleus
Correct Answer: C
Rationale: The Golgi apparatus processes and sorts proteins for
secretion.
4. Which organelle contains digestive enzymes to break down
waste?
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Nucleus
Correct Answer: B
Rationale: Lysosomes digest macromolecules and damaged
organelles.
5. Which structure controls cell activities and contains DNA?
A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Correct Answer: A
,Rationale: The nucleus stores genetic information and regulates
cellular activities.
6. Which structure regulates movement of substances in and out
of the cell?
A. Cell wall
B. Plasma membrane
C. Cytoplasm
D. Nucleus
Correct Answer: B
Rationale: The plasma membrane controls substance exchange and
maintains homeostasis.
7. Which organelle is responsible for energy production?
A. Ribosome
B. Mitochondria
C. Nucleus
D. Golgi apparatus
Correct Answer: B
Rationale: Mitochondria produce ATP through cellular respiration.
8. Which organelle stores water and nutrients in plant cells?
A. Vacuole
B. Lysosome
C. Ribosome
, D. Nucleus
Correct Answer: A
Rationale: The central vacuole stores water, nutrients, and waste
products.
9. Which organelle is the site of lipid synthesis?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: Smooth ER synthesizes lipids and detoxifies certain
chemicals.
10. Which organelle has ribosomes attached and synthesizes
proteins?
A. Smooth ER
B. Rough ER
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: Rough ER is studded with ribosomes for protein
production.
11. Which organelle is responsible for photosynthesis?
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. What is the basic structural unit of life?
A. Atom
B. Cell
C. Tissue
D. Organ
Correct Answer: B
Rationale: The cell is the fundamental unit of structure and
function in living organisms.
2. Which organelle is the site of protein synthesis?
A. Mitochondria
B. Ribosome
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: Ribosomes translate mRNA into proteins.
,3. Which organelle modifies and packages proteins for export?
A. Endoplasmic reticulum
B. Ribosome
C. Golgi apparatus
D. Nucleus
Correct Answer: C
Rationale: The Golgi apparatus processes and sorts proteins for
secretion.
4. Which organelle contains digestive enzymes to break down
waste?
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Nucleus
Correct Answer: B
Rationale: Lysosomes digest macromolecules and damaged
organelles.
5. Which structure controls cell activities and contains DNA?
A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Correct Answer: A
,Rationale: The nucleus stores genetic information and regulates
cellular activities.
6. Which structure regulates movement of substances in and out
of the cell?
A. Cell wall
B. Plasma membrane
C. Cytoplasm
D. Nucleus
Correct Answer: B
Rationale: The plasma membrane controls substance exchange and
maintains homeostasis.
7. Which organelle is responsible for energy production?
A. Ribosome
B. Mitochondria
C. Nucleus
D. Golgi apparatus
Correct Answer: B
Rationale: Mitochondria produce ATP through cellular respiration.
8. Which organelle stores water and nutrients in plant cells?
A. Vacuole
B. Lysosome
C. Ribosome
, D. Nucleus
Correct Answer: A
Rationale: The central vacuole stores water, nutrients, and waste
products.
9. Which organelle is the site of lipid synthesis?
A. Rough ER
B. Smooth ER
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: Smooth ER synthesizes lipids and detoxifies certain
chemicals.
10. Which organelle has ribosomes attached and synthesizes
proteins?
A. Smooth ER
B. Rough ER
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: Rough ER is studded with ribosomes for protein
production.
11. Which organelle is responsible for photosynthesis?
