BIOL251 Human Anatomy & Physiology Latest Exam
Questions 2026 | Answers & Explanations
1. Which level of organization is the smallest in the human body?
A. Tissue
B. Organ
C. Chemical
D. Cellular
Answer: C. Chemical
Explanation: The chemical level consists of atoms and molecules, which form the basis of
all higher levels of organization.
2. Which anatomical position describes the body correctly?
A. Standing upright with palms facing posteriorly
B. Standing upright with palms facing anteriorly
C. Sitting with palms facing upward
D. Standing with feet crossed
Answer: B. Standing upright with palms facing anteriorly
Explanation: In anatomical position, the body is erect, feet are together or slightly apart,
arms are at the sides, and palms face forward.
,3. Which plane divides the body into equal right and left portions?
A. Frontal plane
B. Transverse plane
C. Midsagittal plane
D. Oblique plane
Answer: C. Midsagittal plane
Explanation: A midsagittal plane passes through the body's midline and divides it into equal
right and left halves.
4. Which term means “toward the head”?
A. Inferior
B. Caudal
C. Superior
D. Distal
Answer: C. Superior
Explanation: Superior means toward the head or upper part of the body.
5. Which organelle is primarily responsible for producing ATP?
A. Ribosome
B. Lysosome
C. Nucleus
D. Mitochondrion
,Answer: D. Mitochondrion
Explanation: Mitochondria generate most of the cell's ATP through aerobic cellular
respiration.
6. The plasma membrane is primarily composed of:
A. A phospholipid bilayer and proteins
B. DNA and RNA
C. Glycogen and cholesterol only
D. Calcium and phosphate
Answer: A. A phospholipid bilayer and proteins
Explanation: The plasma membrane consists mainly of phospholipids, proteins, cholesterol,
and carbohydrates.
7. Movement of molecules from an area of high concentration to low concentration is
called:
A. Active transport
B. Diffusion
C. Endocytosis
D. Exocytosis
Answer: B. Diffusion
Explanation: Diffusion is passive movement down a concentration gradient and does not
directly require cellular ATP.
, 8. Which tissue type covers body surfaces and lines body cavities?
A. Connective tissue
B. Muscle tissue
C. Nervous tissue
D. Epithelial tissue
Answer: D. Epithelial tissue
Explanation: Epithelial tissue forms coverings, linings, and many glands.
9. Which type of connective tissue stores fat?
A. Adipose tissue
B. Cartilage
C. Dense regular tissue
D. Bone
Answer: A. Adipose tissue
Explanation: Adipose tissue stores energy as fat and also provides insulation and
cushioning.
10. Which muscle tissue is under voluntary control?
A. Cardiac muscle
B. Smooth muscle
C. Skeletal muscle
D. Visceral muscle
Questions 2026 | Answers & Explanations
1. Which level of organization is the smallest in the human body?
A. Tissue
B. Organ
C. Chemical
D. Cellular
Answer: C. Chemical
Explanation: The chemical level consists of atoms and molecules, which form the basis of
all higher levels of organization.
2. Which anatomical position describes the body correctly?
A. Standing upright with palms facing posteriorly
B. Standing upright with palms facing anteriorly
C. Sitting with palms facing upward
D. Standing with feet crossed
Answer: B. Standing upright with palms facing anteriorly
Explanation: In anatomical position, the body is erect, feet are together or slightly apart,
arms are at the sides, and palms face forward.
,3. Which plane divides the body into equal right and left portions?
A. Frontal plane
B. Transverse plane
C. Midsagittal plane
D. Oblique plane
Answer: C. Midsagittal plane
Explanation: A midsagittal plane passes through the body's midline and divides it into equal
right and left halves.
4. Which term means “toward the head”?
A. Inferior
B. Caudal
C. Superior
D. Distal
Answer: C. Superior
Explanation: Superior means toward the head or upper part of the body.
5. Which organelle is primarily responsible for producing ATP?
A. Ribosome
B. Lysosome
C. Nucleus
D. Mitochondrion
,Answer: D. Mitochondrion
Explanation: Mitochondria generate most of the cell's ATP through aerobic cellular
respiration.
6. The plasma membrane is primarily composed of:
A. A phospholipid bilayer and proteins
B. DNA and RNA
C. Glycogen and cholesterol only
D. Calcium and phosphate
Answer: A. A phospholipid bilayer and proteins
Explanation: The plasma membrane consists mainly of phospholipids, proteins, cholesterol,
and carbohydrates.
7. Movement of molecules from an area of high concentration to low concentration is
called:
A. Active transport
B. Diffusion
C. Endocytosis
D. Exocytosis
Answer: B. Diffusion
Explanation: Diffusion is passive movement down a concentration gradient and does not
directly require cellular ATP.
, 8. Which tissue type covers body surfaces and lines body cavities?
A. Connective tissue
B. Muscle tissue
C. Nervous tissue
D. Epithelial tissue
Answer: D. Epithelial tissue
Explanation: Epithelial tissue forms coverings, linings, and many glands.
9. Which type of connective tissue stores fat?
A. Adipose tissue
B. Cartilage
C. Dense regular tissue
D. Bone
Answer: A. Adipose tissue
Explanation: Adipose tissue stores energy as fat and also provides insulation and
cushioning.
10. Which muscle tissue is under voluntary control?
A. Cardiac muscle
B. Smooth muscle
C. Skeletal muscle
D. Visceral muscle
