BIO 201 MIDTERM EXAM – ANATOMY
& PHYSIOLOGY QUESTIONS WITH
CORRECT ANSWERS (LATEST 2026 /
2027), (A+ GUARANTEE).
1. Which of the following best describes the physiological process of negative feedback?
A. The effector enhances the stimulus to increase the rate of reaction.
B. The effector opposes the stimulus to return the body to a set point.
C. The control center ignores the stimulus once the threshold is reached.
D. The receptor acts as the primary driver to accelerate homeostatic change.
Answer: B
Conceptual Explanation: Negative feedback loops work to maintain homeostasis by
producing a response that is opposite to the initial change (stimulus).
2. A plane that divides the body into superior and inferior portions is known as a:
A. Sagittal plane
B. Coronal plane
C. Transverse plane
D. Frontal plane
,Answer: C
Conceptual Explanation: A transverse or horizontal plane cuts the body into upper
(superior) and lower (inferior) sections.
3. Which organelle is responsible for the synthesis of lipids and the detoxification of drugs in
the liver?
A. Rough Endoplasmic Reticulum
B. Golgi Apparatus
C. Smooth Endoplasmic Reticulum
D. Lysosome
Answer: C
Conceptual Explanation: The Smooth ER is the site of lipid synthesis, calcium storage, and
detoxification; the Rough ER is associated with protein synthesis.
4. During which phase of the cell cycle does DNA replication occur?
A. G1 Phase
B. G2 Phase
C. S Phase
D. M Phase
Answer: C
, Conceptual Explanation: The S (Synthesis) phase of interphase is when the cell replicates
its genetic material.
5. The Sodium-Potassium pump (Na+/K+ ATPase) is an example of:
A. Facilitated diffusion
B. Primary active transport
C. Secondary active transport
D. Simple diffusion
Answer: B
Conceptual Explanation: The Na+/K+ pump uses ATP directly to move ions against their
concentration gradients, classifying it as primary active transport.
6. Which type of epithelial tissue is found lining the urinary bladder, allowing it to stretch?
A. Simple Squamous
B. Stratified Columnar
C. Transitional Epithelium
D. Pseudostratified Ciliated
Answer: C
Conceptual Explanation: Transitional epithelium is unique because its cells can change
shape (from cuboidal to flattened) to accommodate stretching in the urinary system.
& PHYSIOLOGY QUESTIONS WITH
CORRECT ANSWERS (LATEST 2026 /
2027), (A+ GUARANTEE).
1. Which of the following best describes the physiological process of negative feedback?
A. The effector enhances the stimulus to increase the rate of reaction.
B. The effector opposes the stimulus to return the body to a set point.
C. The control center ignores the stimulus once the threshold is reached.
D. The receptor acts as the primary driver to accelerate homeostatic change.
Answer: B
Conceptual Explanation: Negative feedback loops work to maintain homeostasis by
producing a response that is opposite to the initial change (stimulus).
2. A plane that divides the body into superior and inferior portions is known as a:
A. Sagittal plane
B. Coronal plane
C. Transverse plane
D. Frontal plane
,Answer: C
Conceptual Explanation: A transverse or horizontal plane cuts the body into upper
(superior) and lower (inferior) sections.
3. Which organelle is responsible for the synthesis of lipids and the detoxification of drugs in
the liver?
A. Rough Endoplasmic Reticulum
B. Golgi Apparatus
C. Smooth Endoplasmic Reticulum
D. Lysosome
Answer: C
Conceptual Explanation: The Smooth ER is the site of lipid synthesis, calcium storage, and
detoxification; the Rough ER is associated with protein synthesis.
4. During which phase of the cell cycle does DNA replication occur?
A. G1 Phase
B. G2 Phase
C. S Phase
D. M Phase
Answer: C
, Conceptual Explanation: The S (Synthesis) phase of interphase is when the cell replicates
its genetic material.
5. The Sodium-Potassium pump (Na+/K+ ATPase) is an example of:
A. Facilitated diffusion
B. Primary active transport
C. Secondary active transport
D. Simple diffusion
Answer: B
Conceptual Explanation: The Na+/K+ pump uses ATP directly to move ions against their
concentration gradients, classifying it as primary active transport.
6. Which type of epithelial tissue is found lining the urinary bladder, allowing it to stretch?
A. Simple Squamous
B. Stratified Columnar
C. Transitional Epithelium
D. Pseudostratified Ciliated
Answer: C
Conceptual Explanation: Transitional epithelium is unique because its cells can change
shape (from cuboidal to flattened) to accommodate stretching in the urinary system.
