BIOL251 – Human Anatomy & Physiology I w/ Lab (Module
2, 2026) High-Yield Practice Exam – 90+ Most-Tested
Questions and Verified 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 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 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 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 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 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 ANSWER 👀 *** Mitochondria
Explanation: High-yield, essential organelle question.
6. A cell placed in a hypotonic solution will:
- SELECTED ANSWER 👀 *** Swell and possibly lyse
Explanation: Water moves into the cell; classic osmotic question.
, 7. The function of lysosomes is:
- SELECTED ANSWER 👀 *** Intracellular digestion of macromolecules
Explanation: Contains hydrolytic enzymes; frequently tested.
8. Microtubules, microfilaments, and intermediate filaments are
components of:
- SELECTED 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 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 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?
- SELECTED ANSWER 👀 *** Skin epidermis
Explanation: Provides protection; common histology question.
12. Simple columnar epithelium with goblet cells is found in:
- SELECTED ANSWER 👀 *** Small intestine lining
2, 2026) High-Yield Practice Exam – 90+ Most-Tested
Questions and Verified 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 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 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 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 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 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 ANSWER 👀 *** Mitochondria
Explanation: High-yield, essential organelle question.
6. A cell placed in a hypotonic solution will:
- SELECTED ANSWER 👀 *** Swell and possibly lyse
Explanation: Water moves into the cell; classic osmotic question.
, 7. The function of lysosomes is:
- SELECTED ANSWER 👀 *** Intracellular digestion of macromolecules
Explanation: Contains hydrolytic enzymes; frequently tested.
8. Microtubules, microfilaments, and intermediate filaments are
components of:
- SELECTED 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 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 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?
- SELECTED ANSWER 👀 *** Skin epidermis
Explanation: Provides protection; common histology question.
12. Simple columnar epithelium with goblet cells is found in:
- SELECTED ANSWER 👀 *** Small intestine lining
