BIOS 150 Week 1 Quiz Exam 2 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which property makes water an excellent solvent?
A. Nonpolarity
B. Polarity
C. Density
D. Viscosity
correct Answer: B. Polarity
Rationale: Water’s polarity allows it to dissolve many ionic and
polar substances.
2. What type of bond holds water molecules together?
A. Ionic
B. Covalent
C. Hydrogen
D. Peptide
correct Answer: C. Hydrogen
Rationale: Hydrogen bonds form between water molecules due to
partial charges.
,3. Which macromolecule is used for long-term energy storage?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids
correct Answer: C. Lipids
Rationale: Lipids store energy efficiently over long periods.
4. What is the function of cholesterol in cells?
A. Protein synthesis
B. Membrane fluidity
C. DNA storage
D. Energy production
correct Answer: B. Membrane fluidity
Rationale: Cholesterol stabilizes cell membranes.
5. Which element is most abundant in living organisms?
A. Nitrogen
B. Oxygen
C. Carbon
D. Hydrogen
correct Answer: B. Oxygen
Rationale: Oxygen is abundant due to water and organic molecules.
6. Which structure contains enzymes for digestion?
,A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Nucleus
correct Answer: B. Lysosome
Rationale: Lysosomes contain digestive enzymes.
7. What is the function of rough ER?
A. Lipid synthesis
B. Protein synthesis
C. DNA storage
D. Energy production
correct Answer: B. Protein synthesis
Rationale: Ribosomes on rough ER synthesize proteins.
8. What is the main component of cell membranes?
A. Proteins
B. Phospholipids
C. Carbohydrates
D. DNA
correct Answer: B. Phospholipids
Rationale: Phospholipid bilayer forms the membrane structure.
9. Which structure provides support in plant cells?
, A. Cell membrane
B. Cytoplasm
C. Cell wall
D. Nucleus
correct Answer: C. Cell wall
Rationale: The cell wall gives rigidity and protection.
10. What is facilitated diffusion?
A. Active transport
B. Movement with proteins
C. Movement against gradient
D. Requires ATP
correct Answer: B. Movement with proteins
Rationale: Uses carrier proteins but no energy.
11. What is isotonic solution?
A. Higher solute outside
B. Equal solute
C. Lower solute outside
D. No solute
correct Answer: B. Equal solute
Rationale: No net water movement occurs.
12. What happens to a cell in hypotonic solution?
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which property makes water an excellent solvent?
A. Nonpolarity
B. Polarity
C. Density
D. Viscosity
correct Answer: B. Polarity
Rationale: Water’s polarity allows it to dissolve many ionic and
polar substances.
2. What type of bond holds water molecules together?
A. Ionic
B. Covalent
C. Hydrogen
D. Peptide
correct Answer: C. Hydrogen
Rationale: Hydrogen bonds form between water molecules due to
partial charges.
,3. Which macromolecule is used for long-term energy storage?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids
correct Answer: C. Lipids
Rationale: Lipids store energy efficiently over long periods.
4. What is the function of cholesterol in cells?
A. Protein synthesis
B. Membrane fluidity
C. DNA storage
D. Energy production
correct Answer: B. Membrane fluidity
Rationale: Cholesterol stabilizes cell membranes.
5. Which element is most abundant in living organisms?
A. Nitrogen
B. Oxygen
C. Carbon
D. Hydrogen
correct Answer: B. Oxygen
Rationale: Oxygen is abundant due to water and organic molecules.
6. Which structure contains enzymes for digestion?
,A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Nucleus
correct Answer: B. Lysosome
Rationale: Lysosomes contain digestive enzymes.
7. What is the function of rough ER?
A. Lipid synthesis
B. Protein synthesis
C. DNA storage
D. Energy production
correct Answer: B. Protein synthesis
Rationale: Ribosomes on rough ER synthesize proteins.
8. What is the main component of cell membranes?
A. Proteins
B. Phospholipids
C. Carbohydrates
D. DNA
correct Answer: B. Phospholipids
Rationale: Phospholipid bilayer forms the membrane structure.
9. Which structure provides support in plant cells?
, A. Cell membrane
B. Cytoplasm
C. Cell wall
D. Nucleus
correct Answer: C. Cell wall
Rationale: The cell wall gives rigidity and protection.
10. What is facilitated diffusion?
A. Active transport
B. Movement with proteins
C. Movement against gradient
D. Requires ATP
correct Answer: B. Movement with proteins
Rationale: Uses carrier proteins but no energy.
11. What is isotonic solution?
A. Higher solute outside
B. Equal solute
C. Lower solute outside
D. No solute
correct Answer: B. Equal solute
Rationale: No net water movement occurs.
12. What happens to a cell in hypotonic solution?
