BIOL251 – Human Anatomy & Physiology I w/ Lab (Module 2, 2026) High-Yield Practice Exam – 90+ Most Tested Questions and Verified SELECTED CORRECT 100% answers

BIOL251 – Human Anatomy & Physiology I w/
Lab (Module
2, 2026) High-Yield Practice Exam – 90+ Most-
Tested Questions and Verified
SELECTED CORRECT 100% answers
Cells, Tissues, Histology, Integumentary System, Membrane Transport, Homeostasis, and
Applied Physiology




Introduction
This BIOL251 – Human Anatomy & Physiology I w/ Lab, Module 2 practice exam is
designed to help students review and master key concepts in human anatomy and physiology
related to cellular structure and function, tissue identification, integumentary system,
histology, membrane transport, homeostasis, and integrative physiology.

The exam contains 90 high-yield questions, divided into three batches of 30 questions for
easier study and review. Each question is presented in a scenario-based or application-based
format, reflecting the most commonly tested content in lab and lecture exams.

Every question includes:

• Correct SELECTED CORRECT 100% answer
• Concise explanation to reinforce understanding




Cells & Cellular Physiology (Q1–10)

1. A lab student observes a cell under a microscope and notes that
the nucleus is very prominent, and the cytoplasm contains many
ribosomes. Which type of cell is most likely being observed?
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Protein-
secreting cell (e.g., pancreatic acinar cell)

,Explanation: High ribosome content indicates active protein synthesis;
prominent nucleus supports active transcription.


2. Substances such as oxygen and carbon dioxide move across the
plasma membrane from high to low concentration without energy.
This process is called:
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Simple
diffusion
Explanation: Passive movement of molecules along the concentration
gradient; classic exam question.



3. A cell uses vesicles to export proteins it synthesized. This process
is called:
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Exocytosis
Explanation: Active transport of substances out of the cell via vesicles;
high-yield for cell transport.



4. Sodium ions are transported out of a cell against their
concentration gradient using ATP. This process is:
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Active
transport
Explanation: Requires energy to move molecules against the gradient;
frequently tested.



5. Which organelle is responsible for producing ATP through cellular
respiration?
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Mitochondria
Explanation: High-yield, essential organelle question.



6. A cell placed in a hypotonic solution will:

, - SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Swell and
possibly lyse
Explanation: Water moves into the cell; classic osmotic question.


7. The function of lysosomes is:
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Intracellular
digestion of macromolecules Explanation: Contains hydrolytic enzymes;
frequently tested.



8. Microtubules, microfilaments, and intermediate filaments are
components of:
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Cytoskeleton
Explanation: Provides structure, support, and intracellular transport.



9. A mutation prevents proper folding of proteins in the rough ER.
This would affect:
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Protein
synthesis and transport Explanation: Rough ER modifies and folds
proteins; high-yield cell physiology concept.



10. The selectively permeable barrier that regulates entry and exit of
substances is the:
- SELECTED SELECTED CORRECT 100% ANSWER 👀 *** Plasma
membrane
Explanation: Fundamental structure; tested in almost every anatomy
exam.



Tissues & Histology (Q11–20)

11. Stratified squamous epithelium is found in which location?