Workbook EXAM for
Understanding Anatomy
& Physiology (4th Edition)
by Thompson
1. Levels of Organization
Q1. What is the correct order of biological organization from simplest to most
complex?
A. Organ → tissue → cell → system → organism
B. Cell → tissue → organ → organ system → organism
C. Tissue → cell → organ → organism → system
D. Cell → organ → tissue → system → organism
Answer: B
Explanation: Life is organized from cells → tissues → organs → systems → organism.
2. Homeostasis
Q2. Which system is primarily responsible for maintaining homeostasis through
hormone regulation?
A. Nervous system
B. Digestive system
C. Endocrine system
D. Skeletal system
,Answer: C
Explanation: The endocrine system regulates body functions using hormones.
3. Basic Chemistry in A&P
Q3. Water is considered a polar molecule because:
A. It has no charge
B. It has equal sharing of electrons
C. It has partial positive and negative charges
D. It is non-reactive
Answer: C
Explanation: Oxygen pulls electrons more strongly, creating polarity.
4. Cell Structure
Q4. What is the main function of mitochondria?
A. Protein synthesis
B. Energy production (ATP)
C. Waste storage
D. Cell division
Answer: B
Explanation: Mitochondria generate ATP through cellular respiration.
5. Plasma Membrane
Q5. The plasma membrane is best described as:
A. Rigid and unchanging
B. A phospholipid bilayer with embedded proteins
C. Made only of carbohydrates
,D. Completely impermeable
Answer: B
Explanation: It is selectively permeable and fluid in structure.
6. Transport Across Membranes
Q6. Diffusion is defined as:
A. Movement of water only
B. Movement of molecules from high to low concentration
C. Movement requiring ATP
D. Movement against concentration gradient
Answer: B
Explanation: Diffusion is passive movement down a gradient.
7. Tissues
Q7. Which tissue type covers body surfaces and lines organs?
A. Muscle tissue
B. Nervous tissue
C. Epithelial tissue
D. Connective tissue
Answer: C
Explanation: Epithelial tissue forms protective coverings.
8. Integumentary System
Q8. The primary function of the skin includes:
A. Hormone production only
B. Protection and temperature regulation
, C. Blood cell production
D. Bone formation
Answer: B
Explanation: Skin protects and helps regulate body temperature.
9. Skeletal System
Q9. Red bone marrow is primarily responsible for:
A. Fat storage
B. Blood cell production
C. Calcium storage
D. Joint lubrication
Answer: B
Explanation: Hematopoiesis (blood cell production) occurs in red marrow.
10. Muscular System
Q10. Muscle contraction occurs when:
A. Calcium is removed from the cell
B. Actin and myosin slide past each other
C. ATP is not present
D. Bones fuse together
Answer: B
Explanation: The sliding filament theory explains contraction.11. Cell Membrane
Transport
Q11. Which process moves substances against their concentration gradient?
A. Diffusion
B. Osmosis
Understanding Anatomy
& Physiology (4th Edition)
by Thompson
1. Levels of Organization
Q1. What is the correct order of biological organization from simplest to most
complex?
A. Organ → tissue → cell → system → organism
B. Cell → tissue → organ → organ system → organism
C. Tissue → cell → organ → organism → system
D. Cell → organ → tissue → system → organism
Answer: B
Explanation: Life is organized from cells → tissues → organs → systems → organism.
2. Homeostasis
Q2. Which system is primarily responsible for maintaining homeostasis through
hormone regulation?
A. Nervous system
B. Digestive system
C. Endocrine system
D. Skeletal system
,Answer: C
Explanation: The endocrine system regulates body functions using hormones.
3. Basic Chemistry in A&P
Q3. Water is considered a polar molecule because:
A. It has no charge
B. It has equal sharing of electrons
C. It has partial positive and negative charges
D. It is non-reactive
Answer: C
Explanation: Oxygen pulls electrons more strongly, creating polarity.
4. Cell Structure
Q4. What is the main function of mitochondria?
A. Protein synthesis
B. Energy production (ATP)
C. Waste storage
D. Cell division
Answer: B
Explanation: Mitochondria generate ATP through cellular respiration.
5. Plasma Membrane
Q5. The plasma membrane is best described as:
A. Rigid and unchanging
B. A phospholipid bilayer with embedded proteins
C. Made only of carbohydrates
,D. Completely impermeable
Answer: B
Explanation: It is selectively permeable and fluid in structure.
6. Transport Across Membranes
Q6. Diffusion is defined as:
A. Movement of water only
B. Movement of molecules from high to low concentration
C. Movement requiring ATP
D. Movement against concentration gradient
Answer: B
Explanation: Diffusion is passive movement down a gradient.
7. Tissues
Q7. Which tissue type covers body surfaces and lines organs?
A. Muscle tissue
B. Nervous tissue
C. Epithelial tissue
D. Connective tissue
Answer: C
Explanation: Epithelial tissue forms protective coverings.
8. Integumentary System
Q8. The primary function of the skin includes:
A. Hormone production only
B. Protection and temperature regulation
, C. Blood cell production
D. Bone formation
Answer: B
Explanation: Skin protects and helps regulate body temperature.
9. Skeletal System
Q9. Red bone marrow is primarily responsible for:
A. Fat storage
B. Blood cell production
C. Calcium storage
D. Joint lubrication
Answer: B
Explanation: Hematopoiesis (blood cell production) occurs in red marrow.
10. Muscular System
Q10. Muscle contraction occurs when:
A. Calcium is removed from the cell
B. Actin and myosin slide past each other
C. ATP is not present
D. Bones fuse together
Answer: B
Explanation: The sliding filament theory explains contraction.11. Cell Membrane
Transport
Q11. Which process moves substances against their concentration gradient?
A. Diffusion
B. Osmosis
