APHY 101 Final Exam Questions With Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which level of organization is the simplest level in the human
body?
A. Tissue
B. Organ
C. Organ system
D. Cell
Rationale: Cells are the basic structural and functional units of life.
Tissues are groups of similar cells, organs consist of multiple tissue
types, and organ systems are groups of organs working together.
Understanding the hierarchy of organization is fundamental to
anatomy and physiology.
2. Which organelle is known as the "powerhouse of the cell"?
A. Nucleus
B. Ribosome
, C. Mitochondrion
D. Golgi apparatus
Rationale: Mitochondria generate ATP through cellular respiration,
providing the energy required for nearly all cellular activities. Cells
with high energy demands, such as muscle cells, contain numerous
mitochondria.
3. Which type of tissue covers body surfaces and lines body cavities?
A. Connective tissue
B. Muscle tissue
C. Nervous tissue
D. Epithelial tissue
Rationale: Epithelial tissue functions as a protective covering, forms
glands, and regulates absorption, secretion, and filtration. It creates
barriers between the body and the external environment.
4. Homeostasis refers to:
A. The breakdown of nutrients
B. Cell reproduction
C. The maintenance of a stable internal environment
D. Growth of body tissues
Rationale: Homeostasis allows the body to maintain relatively
constant internal conditions despite external changes. Temperature,
,blood pressure, blood glucose, and pH are examples of variables
regulated by homeostatic mechanisms.
5. Which body cavity contains the lungs?
A. Abdominal cavity
B. Cranial cavity
C. Pelvic cavity
D. Thoracic cavity
Rationale: The thoracic cavity houses the lungs and heart. It is
separated from the abdominal cavity by the diaphragm and provides
protection for vital respiratory and cardiovascular organs.
6. Which directional term means "toward the head"?
A. Inferior
B. Distal
C. Posterior
D. Superior
Rationale: Superior (or cranial) indicates a position closer to the head.
It is opposite inferior, which means toward the feet.
7. The plasma membrane is primarily composed of:
A. DNA and RNA
B. Carbohydrates only
, C. Phospholipids and proteins
D. Calcium and potassium
Rationale: The plasma membrane consists of a phospholipid bilayer
with embedded proteins. This structure provides selective
permeability, communication, and transport functions.
8. Which organelle contains the cell's genetic material?
A. Lysosome
B. Nucleus
C. Endoplasmic reticulum
D. Golgi apparatus
Rationale: The nucleus stores DNA and controls cellular activities
through regulation of gene expression and protein synthesis.
9. Which type of transport requires ATP?
A. Diffusion
B. Osmosis
C. Filtration
D. Active transport
Rationale: Active transport moves substances against their
concentration gradient using ATP. Examples include the sodium-
potassium pump and calcium pumps.
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which level of organization is the simplest level in the human
body?
A. Tissue
B. Organ
C. Organ system
D. Cell
Rationale: Cells are the basic structural and functional units of life.
Tissues are groups of similar cells, organs consist of multiple tissue
types, and organ systems are groups of organs working together.
Understanding the hierarchy of organization is fundamental to
anatomy and physiology.
2. Which organelle is known as the "powerhouse of the cell"?
A. Nucleus
B. Ribosome
, C. Mitochondrion
D. Golgi apparatus
Rationale: Mitochondria generate ATP through cellular respiration,
providing the energy required for nearly all cellular activities. Cells
with high energy demands, such as muscle cells, contain numerous
mitochondria.
3. Which type of tissue covers body surfaces and lines body cavities?
A. Connective tissue
B. Muscle tissue
C. Nervous tissue
D. Epithelial tissue
Rationale: Epithelial tissue functions as a protective covering, forms
glands, and regulates absorption, secretion, and filtration. It creates
barriers between the body and the external environment.
4. Homeostasis refers to:
A. The breakdown of nutrients
B. Cell reproduction
C. The maintenance of a stable internal environment
D. Growth of body tissues
Rationale: Homeostasis allows the body to maintain relatively
constant internal conditions despite external changes. Temperature,
,blood pressure, blood glucose, and pH are examples of variables
regulated by homeostatic mechanisms.
5. Which body cavity contains the lungs?
A. Abdominal cavity
B. Cranial cavity
C. Pelvic cavity
D. Thoracic cavity
Rationale: The thoracic cavity houses the lungs and heart. It is
separated from the abdominal cavity by the diaphragm and provides
protection for vital respiratory and cardiovascular organs.
6. Which directional term means "toward the head"?
A. Inferior
B. Distal
C. Posterior
D. Superior
Rationale: Superior (or cranial) indicates a position closer to the head.
It is opposite inferior, which means toward the feet.
7. The plasma membrane is primarily composed of:
A. DNA and RNA
B. Carbohydrates only
, C. Phospholipids and proteins
D. Calcium and potassium
Rationale: The plasma membrane consists of a phospholipid bilayer
with embedded proteins. This structure provides selective
permeability, communication, and transport functions.
8. Which organelle contains the cell's genetic material?
A. Lysosome
B. Nucleus
C. Endoplasmic reticulum
D. Golgi apparatus
Rationale: The nucleus stores DNA and controls cellular activities
through regulation of gene expression and protein synthesis.
9. Which type of transport requires ATP?
A. Diffusion
B. Osmosis
C. Filtration
D. Active transport
Rationale: Active transport moves substances against their
concentration gradient using ATP. Examples include the sodium-
potassium pump and calcium pumps.
