BIOS 150 Week 2 Quiz Exam 3 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The basic unit of life is:
A. Atom
B. Molecule
C. Cell
D. Organ
Correct Answer: C. Cell
Rationale: The cell is the smallest structural and functional unit of
life.
2. Prokaryotic cells lack:
A. Cytoplasm
B. Nucleus
C. Plasma membrane
D. Ribosomes
Correct Answer: B. Nucleus
Rationale: Prokaryotes do not have a membrane-bound nucleus.
,3. Eukaryotic cells have:
A. Nucleus
B. Cell wall only
C. No organelles
D. Plasmids only
Correct Answer: A. Nucleus
Rationale: Eukaryotes have membrane-bound organelles including
the nucleus.
4. Plasma membrane is mainly composed of:
A. Carbohydrates
B. Lipids and proteins
C. Nucleic acids
D. Polysaccharides
Correct Answer: B. Lipids and proteins
Rationale: Lipid bilayer with embedded proteins forms the cell
membrane.
5. The fluid mosaic model describes:
A. Nuclear structure
B. Cell membrane structure
C. Cytoplasm viscosity
D. Mitochondrial matrix
Correct Answer: B. Cell membrane structure
Rationale: Proteins float in a fluid lipid bilayer.
,6. Which organelle is responsible for ATP production?
A. Lysosome
B. Golgi apparatus
C. Mitochondria
D. Ribosome
Correct Answer: C. Mitochondria
Rationale: Mitochondria produce energy via cellular respiration.
7. Ribosomes function in:
A. DNA replication
B. Protein synthesis
C. ATP production
D. Lipid metabolism
Correct Answer: B. Protein synthesis
Rationale: Ribosomes assemble amino acids into polypeptides.
8. Rough ER is involved in:
A. Lipid synthesis
B. Protein synthesis
C. Detoxification
D. DNA replication
Correct Answer: B. Protein synthesis
Rationale: Studded with ribosomes for protein production.
9. Smooth ER is responsible for:
, A. Ribosome production
B. Lipid synthesis and detoxification
C. Protein folding
D. DNA transcription
Correct Answer: B. Lipid synthesis and detoxification
Rationale: Lacks ribosomes, produces lipids and metabolizes toxins.
10. Golgi apparatus:
A. Synthesizes ATP
B. Modifies and packages proteins
C. Stores DNA
D. Produces lipids
Correct Answer: B. Modifies and packages proteins
Rationale: Proteins are sorted and shipped to destinations.
11. Lysosomes function in:
A. Energy storage
B. Digesting macromolecules
C. Protein synthesis
D. RNA synthesis
Correct Answer: B. Digesting macromolecules
Rationale: Contain hydrolytic enzymes for breakdown.
12. Peroxisomes:
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The basic unit of life is:
A. Atom
B. Molecule
C. Cell
D. Organ
Correct Answer: C. Cell
Rationale: The cell is the smallest structural and functional unit of
life.
2. Prokaryotic cells lack:
A. Cytoplasm
B. Nucleus
C. Plasma membrane
D. Ribosomes
Correct Answer: B. Nucleus
Rationale: Prokaryotes do not have a membrane-bound nucleus.
,3. Eukaryotic cells have:
A. Nucleus
B. Cell wall only
C. No organelles
D. Plasmids only
Correct Answer: A. Nucleus
Rationale: Eukaryotes have membrane-bound organelles including
the nucleus.
4. Plasma membrane is mainly composed of:
A. Carbohydrates
B. Lipids and proteins
C. Nucleic acids
D. Polysaccharides
Correct Answer: B. Lipids and proteins
Rationale: Lipid bilayer with embedded proteins forms the cell
membrane.
5. The fluid mosaic model describes:
A. Nuclear structure
B. Cell membrane structure
C. Cytoplasm viscosity
D. Mitochondrial matrix
Correct Answer: B. Cell membrane structure
Rationale: Proteins float in a fluid lipid bilayer.
,6. Which organelle is responsible for ATP production?
A. Lysosome
B. Golgi apparatus
C. Mitochondria
D. Ribosome
Correct Answer: C. Mitochondria
Rationale: Mitochondria produce energy via cellular respiration.
7. Ribosomes function in:
A. DNA replication
B. Protein synthesis
C. ATP production
D. Lipid metabolism
Correct Answer: B. Protein synthesis
Rationale: Ribosomes assemble amino acids into polypeptides.
8. Rough ER is involved in:
A. Lipid synthesis
B. Protein synthesis
C. Detoxification
D. DNA replication
Correct Answer: B. Protein synthesis
Rationale: Studded with ribosomes for protein production.
9. Smooth ER is responsible for:
, A. Ribosome production
B. Lipid synthesis and detoxification
C. Protein folding
D. DNA transcription
Correct Answer: B. Lipid synthesis and detoxification
Rationale: Lacks ribosomes, produces lipids and metabolizes toxins.
10. Golgi apparatus:
A. Synthesizes ATP
B. Modifies and packages proteins
C. Stores DNA
D. Produces lipids
Correct Answer: B. Modifies and packages proteins
Rationale: Proteins are sorted and shipped to destinations.
11. Lysosomes function in:
A. Energy storage
B. Digesting macromolecules
C. Protein synthesis
D. RNA synthesis
Correct Answer: B. Digesting macromolecules
Rationale: Contain hydrolytic enzymes for breakdown.
12. Peroxisomes:
