BIOS 256 Week 4 Quiz Exam 2 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which type of white blood cell is primarily responsible for
allergic reactions?
A) Neutrophils
B) Basophils
C) Eosinophils
D) Monocytes
Correct Answer: C
Rationale: Eosinophils combat parasites and mediate allergic
responses.
2. Which organelle is the site of protein folding and modification?
A) Ribosome
B) Golgi apparatus
C) Rough endoplasmic reticulum
D) Smooth endoplasmic reticulum
Correct Answer: C
,Rationale: The rough ER has ribosomes on its surface that fold and
modify proteins.
3. Which type of blood vessel has valves to prevent backflow?
A) Arteries
B) Veins
C) Capillaries
D) Arterioles
Correct Answer: B
Rationale: Veins carry blood back to the heart and have valves to
prevent reverse flow.
4. Which hormone increases blood calcium levels?
A) Calcitonin
B) Parathyroid hormone
C) Thyroxine
D) Insulin
Correct Answer: B
Rationale: Parathyroid hormone stimulates calcium release from
bones to raise blood calcium.
5. Which organelle is responsible for lipid synthesis?
A) Smooth ER
B) Rough ER
C) Golgi apparatus
,D) Lysosome
Correct Answer: A
Rationale: The smooth ER synthesizes lipids and detoxifies
substances.
6. Which type of muscle tissue is striated and voluntary?
A) Cardiac
B) Smooth
C) Skeletal
D) None of the above
Correct Answer: C
Rationale: Skeletal muscle is striated and under conscious control.
7. Which hormone lowers blood glucose?
A) Glucagon
B) Insulin
C) Adrenaline
D) Cortisol
Correct Answer: B
Rationale: Insulin promotes glucose uptake by cells, reducing blood
sugar levels.
8. Which structure in plants transports water from roots to
leaves?
, A) Phloem
B) Xylem
C) Stomata
D) Cuticle
Correct Answer: B
Rationale: Xylem vessels carry water and minerals upward from
roots to leaves.
9. Which organ detoxifies harmful chemicals in the body?
A) Kidney
B) Liver
C) Pancreas
D) Lungs
Correct Answer: B
Rationale: The liver metabolizes drugs and detoxifies harmful
substances.
10. Which phase of the cell cycle involves cell growth and
preparation for DNA synthesis?
A) G1 phase
B) S phase
C) G2 phase
D) M phase
Correct Answer: A
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which type of white blood cell is primarily responsible for
allergic reactions?
A) Neutrophils
B) Basophils
C) Eosinophils
D) Monocytes
Correct Answer: C
Rationale: Eosinophils combat parasites and mediate allergic
responses.
2. Which organelle is the site of protein folding and modification?
A) Ribosome
B) Golgi apparatus
C) Rough endoplasmic reticulum
D) Smooth endoplasmic reticulum
Correct Answer: C
,Rationale: The rough ER has ribosomes on its surface that fold and
modify proteins.
3. Which type of blood vessel has valves to prevent backflow?
A) Arteries
B) Veins
C) Capillaries
D) Arterioles
Correct Answer: B
Rationale: Veins carry blood back to the heart and have valves to
prevent reverse flow.
4. Which hormone increases blood calcium levels?
A) Calcitonin
B) Parathyroid hormone
C) Thyroxine
D) Insulin
Correct Answer: B
Rationale: Parathyroid hormone stimulates calcium release from
bones to raise blood calcium.
5. Which organelle is responsible for lipid synthesis?
A) Smooth ER
B) Rough ER
C) Golgi apparatus
,D) Lysosome
Correct Answer: A
Rationale: The smooth ER synthesizes lipids and detoxifies
substances.
6. Which type of muscle tissue is striated and voluntary?
A) Cardiac
B) Smooth
C) Skeletal
D) None of the above
Correct Answer: C
Rationale: Skeletal muscle is striated and under conscious control.
7. Which hormone lowers blood glucose?
A) Glucagon
B) Insulin
C) Adrenaline
D) Cortisol
Correct Answer: B
Rationale: Insulin promotes glucose uptake by cells, reducing blood
sugar levels.
8. Which structure in plants transports water from roots to
leaves?
, A) Phloem
B) Xylem
C) Stomata
D) Cuticle
Correct Answer: B
Rationale: Xylem vessels carry water and minerals upward from
roots to leaves.
9. Which organ detoxifies harmful chemicals in the body?
A) Kidney
B) Liver
C) Pancreas
D) Lungs
Correct Answer: B
Rationale: The liver metabolizes drugs and detoxifies harmful
substances.
10. Which phase of the cell cycle involves cell growth and
preparation for DNA synthesis?
A) G1 phase
B) S phase
C) G2 phase
D) M phase
Correct Answer: A
