2026 UPDATED QUESTIONS DOWNLOAD
BIOD 151 Anatomy & Physiology I Master Bank (400+ Q&A) – Full
2026 Study Guide: Modules 1-6 + Lab & Final Exam Prep
Master the Portage Learning BIOD 151 curriculum with this comprehensive 400-question master bank
featuring verified rationales updated for the 2025/2026 academic year. This guide provides an in-depth
breakdown of all core modules, including cellular biology, histology, the skeletal system, and the
muscular system, with a specific focus on high-yield exam topics like the sliding filament theory and
bone histology. Designed for pre-nursing and health science students, these practice scenarios and
detailed explanations ensure you are fully prepared for module exams, lab assessments, and the
cumulative final to secure an A in your A&P I course.
1. Which level of organization is the smallest unit that can carry out all functions of life?
Answer: Cellular Level
Rationale: While atoms and molecules are smaller, they are not "alive." The cell is the basic
structural and functional unit of all living organisms.
2. In the anatomical position, the palms are facing in which direction?
Answer: Anteriorly (Forward)
Rationale: The standard anatomical position involves standing upright, feet slightly apart, with
arms at the sides and palms facing forward.
3. Which body plane divides the body into superior (top) and inferior (bottom) portions?
Answer: Transverse (Horizontal) Plane
Rationale: A sagittal plane divides left/right, and a frontal (coronal) plane divides
anterior/posterior.
4. The elbow is ________ to the wrist.
Answer: Proximal
Rationale: Proximal means closer to the point of attachment (the shoulder) than another body
part.
5. Which body cavity contains the heart and lungs?
Answer: Thoracic Cavity
Rationale: The thoracic cavity is part of the ventral body cavity and is separated from the
abdominal cavity by the diaphragm.
6. The "Serous Membrane" that directly covers the surface of the lungs is the:
Answer: Visceral Pleura
Rationale: Visceral layers cover the organs; Parietal layers line the cavity walls. "Pleura"
specifically refers to the lungs.
7. "Homeostasis" is best defined as:
Answer: Maintaining a stable internal environment despite external changes
, 2026 UPDATED QUESTIONS DOWNLOAD
Rationale: It is a dynamic state of equilibrium, usually maintained through negative feedback
loops.
8. In a "Negative Feedback Loop," the response of the effector is to:
Answer: Reverse or negate the original stimulus
Rationale: Most homeostatic controls (like temperature and blood sugar) are negative
feedback. Positive feedback (like childbirth) enhances the stimulus.
9. Which of the following is an example of an "Abdominal Quadrant" used by clinicians?
Answer: Right Upper Quadrant (RUQ)
Rationale: The abdomen is divided into four quadrants (RUQ, LUQ, RLQ, LLQ) or nine specific
regions.
10. The region of the neck is anatomically referred to as the:
Answer: Cervical Region
Rationale: Axillary is the armpit; Brachial is the upper arm; Lumbar is the lower back.
11. Which organelle is known as the "Powerhouse" of the cell because it produces
ATP?
Answer: Mitochondria
Rationale: Mitochondria perform aerobic respiration to provide energy for cellular activities.
12. "Phospholipids" in the cell membrane are arranged in a bilayer where the "tails" are:
Answer: Hydrophobic (Water-fearing)
Rationale: The phosphate heads are hydrophilic (face outward), and the fatty acid tails are
hydrophobic (face inward).
13. Which cellular structure is responsible for protein synthesis?
Answer: Ribosomes
Rationale: Ribosomes can be "free" in the cytosol or "bound" to the Rough Endoplasmic
Reticulum.
14. The "Rough" Endoplasmic Reticulum is named "rough" because it is studded with:
Answer: Ribosomes
Rationale: The Smooth ER lacks ribosomes and is involved in lipid synthesis and
detoxification.
15. Which organelle acts as the "Shipping and Receiving" center, modifying and
packaging proteins?
Answer: Golgi Apparatus
Rationale: It receives vesicles from the ER and sorts them for their final destination.
16. "Lysosomes" contain which of the following to digest cellular debris?
Answer: Digestive (Hydrolytic) Enzymes
Rationale: Lysosomes act as the cell's "garbage disposal" or recycling center.
17. The movement of water across a semi-permeable membrane from an area of low
solute concentration to high solute concentration is:
, 2026 UPDATED QUESTIONS DOWNLOAD
Answer: Osmosis
Rationale: Osmosis is a passive process that specifically describes the diffusion of water.
18. If a cell is placed in a "Hypertonic" solution, the cell will:
Answer: Shrink (Crenate)
Rationale: Water moves out of the cell toward the higher solute concentration in the
surrounding fluid.
19. Which process requires ATP to move substances "against" their concentration
gradient?
Answer: Active Transport
Rationale: Passive transport (diffusion/osmosis) moves substances "down" their gradient
without energy.
20. "Phagocytosis" is a form of endocytosis commonly referred to as:
Answer: Cell Eating
Rationale: It is used by specialized cells (like white blood cells) to engulf large particles or
bacteria.
21. The stage of the cell cycle where DNA is replicated is:
Answer: S Phase (Synthesis Phase)
Rationale: S phase is part of Interphase, occurring between G1 and G2.
22. During which phase of Mitosis do the chromosomes line up in the center of the cell?
Answer: Metaphase
Rationale: Think "M" for Middle.
23. "Cytokinesis" is defined as the:
Answer: Division of the cytoplasm
Rationale: It usually begins during late anaphase or telophase to complete the formation of two
daughter cells.
24. Which nitrogenous base is found in RNA but NOT in DNA?
Answer: Uracil
Rationale: DNA uses Adenine, Thymine, Cytosine, and Guanine (A-T, C-G). RNA replaces
Thymine with Uracil (A-U).
25. A "Gene" is best described as:
Answer: A segment of DNA that carries instructions for a specific protein
Rationale: Genes are the functional units of heredity.
26. "Transcription" is the process of making:
Answer: mRNA from a DNA template
Rationale: This occurs inside the nucleus before the message is sent to the ribosomes.
27. "Translation" occurs at the ___________ in the cytoplasm.
Answer: Ribosome
Rationale: Translation is the process of decoding mRNA into a polypeptide (protein) chain.
, 2026 UPDATED QUESTIONS DOWNLOAD
28. Which of the following is a "Double-Membrane" organelle containing the cell's
genetic material?
Answer: Nucleus
Rationale: The nuclear envelope features pores that regulate the movement of substances in
and out.
29. "Peroxisomes" are specialized for:
Answer: Neutralizing free radicals and detoxifying alcohol
Rationale: They produce hydrogen peroxide as a byproduct of their metabolic reactions.
30. The "Cytoskeleton" is composed of which three structures?
Answer: Microtubules, Microfilaments, and Intermediate Filaments
Rationale: These provide structural support, motility, and act as "tracks" for moving organelles.
31. In the anatomical hierarchy, a group of similar cells working together to perform a
specific function is a:
Answer: Tissue
Rationale: Cells make up Tissues; Tissues make up Organs; Organs make up Organ Systems.
32. The skin is part of which organ system?
Answer: Integumentary System
Rationale: It provides protection, Vitamin D synthesis, and temperature regulation.
33. Which system is responsible for the transport of nutrients, gases, and wastes via
the blood?
Answer: Cardiovascular System
Rationale: It consists of the heart, blood vessels, and blood.
34. The "Epigastric Region" is located where in the nine abdominal regions?
Answer: Superior to the Umbilical Region
Rationale: "Epi-" means above; it sits above the stomach area.
35. A "Coronal" section through the body would divide it into:
Answer: Front and Back
Rationale: Coronal is synonymous with Frontal.
36. "Anabolism" refers to metabolic processes that:
Answer: Build larger molecules from smaller ones
Rationale: Catabolism breaks molecules down to release energy.
37. Which molecule is the primary "Energy Currency" of the cell?
Answer: ATP (Adenosine Triphosphate)
Rationale: Breaking the high-energy phosphate bonds releases the energy needed for cellular
work.
38. The tail-like structure that allows a human sperm cell to move is a:
Answer: Flagellum
Rationale: Cilia are shorter and move substances across the cell surface; microvilli increase
surface area.
BIOD 151 Anatomy & Physiology I Master Bank (400+ Q&A) – Full
2026 Study Guide: Modules 1-6 + Lab & Final Exam Prep
Master the Portage Learning BIOD 151 curriculum with this comprehensive 400-question master bank
featuring verified rationales updated for the 2025/2026 academic year. This guide provides an in-depth
breakdown of all core modules, including cellular biology, histology, the skeletal system, and the
muscular system, with a specific focus on high-yield exam topics like the sliding filament theory and
bone histology. Designed for pre-nursing and health science students, these practice scenarios and
detailed explanations ensure you are fully prepared for module exams, lab assessments, and the
cumulative final to secure an A in your A&P I course.
1. Which level of organization is the smallest unit that can carry out all functions of life?
Answer: Cellular Level
Rationale: While atoms and molecules are smaller, they are not "alive." The cell is the basic
structural and functional unit of all living organisms.
2. In the anatomical position, the palms are facing in which direction?
Answer: Anteriorly (Forward)
Rationale: The standard anatomical position involves standing upright, feet slightly apart, with
arms at the sides and palms facing forward.
3. Which body plane divides the body into superior (top) and inferior (bottom) portions?
Answer: Transverse (Horizontal) Plane
Rationale: A sagittal plane divides left/right, and a frontal (coronal) plane divides
anterior/posterior.
4. The elbow is ________ to the wrist.
Answer: Proximal
Rationale: Proximal means closer to the point of attachment (the shoulder) than another body
part.
5. Which body cavity contains the heart and lungs?
Answer: Thoracic Cavity
Rationale: The thoracic cavity is part of the ventral body cavity and is separated from the
abdominal cavity by the diaphragm.
6. The "Serous Membrane" that directly covers the surface of the lungs is the:
Answer: Visceral Pleura
Rationale: Visceral layers cover the organs; Parietal layers line the cavity walls. "Pleura"
specifically refers to the lungs.
7. "Homeostasis" is best defined as:
Answer: Maintaining a stable internal environment despite external changes
, 2026 UPDATED QUESTIONS DOWNLOAD
Rationale: It is a dynamic state of equilibrium, usually maintained through negative feedback
loops.
8. In a "Negative Feedback Loop," the response of the effector is to:
Answer: Reverse or negate the original stimulus
Rationale: Most homeostatic controls (like temperature and blood sugar) are negative
feedback. Positive feedback (like childbirth) enhances the stimulus.
9. Which of the following is an example of an "Abdominal Quadrant" used by clinicians?
Answer: Right Upper Quadrant (RUQ)
Rationale: The abdomen is divided into four quadrants (RUQ, LUQ, RLQ, LLQ) or nine specific
regions.
10. The region of the neck is anatomically referred to as the:
Answer: Cervical Region
Rationale: Axillary is the armpit; Brachial is the upper arm; Lumbar is the lower back.
11. Which organelle is known as the "Powerhouse" of the cell because it produces
ATP?
Answer: Mitochondria
Rationale: Mitochondria perform aerobic respiration to provide energy for cellular activities.
12. "Phospholipids" in the cell membrane are arranged in a bilayer where the "tails" are:
Answer: Hydrophobic (Water-fearing)
Rationale: The phosphate heads are hydrophilic (face outward), and the fatty acid tails are
hydrophobic (face inward).
13. Which cellular structure is responsible for protein synthesis?
Answer: Ribosomes
Rationale: Ribosomes can be "free" in the cytosol or "bound" to the Rough Endoplasmic
Reticulum.
14. The "Rough" Endoplasmic Reticulum is named "rough" because it is studded with:
Answer: Ribosomes
Rationale: The Smooth ER lacks ribosomes and is involved in lipid synthesis and
detoxification.
15. Which organelle acts as the "Shipping and Receiving" center, modifying and
packaging proteins?
Answer: Golgi Apparatus
Rationale: It receives vesicles from the ER and sorts them for their final destination.
16. "Lysosomes" contain which of the following to digest cellular debris?
Answer: Digestive (Hydrolytic) Enzymes
Rationale: Lysosomes act as the cell's "garbage disposal" or recycling center.
17. The movement of water across a semi-permeable membrane from an area of low
solute concentration to high solute concentration is:
, 2026 UPDATED QUESTIONS DOWNLOAD
Answer: Osmosis
Rationale: Osmosis is a passive process that specifically describes the diffusion of water.
18. If a cell is placed in a "Hypertonic" solution, the cell will:
Answer: Shrink (Crenate)
Rationale: Water moves out of the cell toward the higher solute concentration in the
surrounding fluid.
19. Which process requires ATP to move substances "against" their concentration
gradient?
Answer: Active Transport
Rationale: Passive transport (diffusion/osmosis) moves substances "down" their gradient
without energy.
20. "Phagocytosis" is a form of endocytosis commonly referred to as:
Answer: Cell Eating
Rationale: It is used by specialized cells (like white blood cells) to engulf large particles or
bacteria.
21. The stage of the cell cycle where DNA is replicated is:
Answer: S Phase (Synthesis Phase)
Rationale: S phase is part of Interphase, occurring between G1 and G2.
22. During which phase of Mitosis do the chromosomes line up in the center of the cell?
Answer: Metaphase
Rationale: Think "M" for Middle.
23. "Cytokinesis" is defined as the:
Answer: Division of the cytoplasm
Rationale: It usually begins during late anaphase or telophase to complete the formation of two
daughter cells.
24. Which nitrogenous base is found in RNA but NOT in DNA?
Answer: Uracil
Rationale: DNA uses Adenine, Thymine, Cytosine, and Guanine (A-T, C-G). RNA replaces
Thymine with Uracil (A-U).
25. A "Gene" is best described as:
Answer: A segment of DNA that carries instructions for a specific protein
Rationale: Genes are the functional units of heredity.
26. "Transcription" is the process of making:
Answer: mRNA from a DNA template
Rationale: This occurs inside the nucleus before the message is sent to the ribosomes.
27. "Translation" occurs at the ___________ in the cytoplasm.
Answer: Ribosome
Rationale: Translation is the process of decoding mRNA into a polypeptide (protein) chain.
, 2026 UPDATED QUESTIONS DOWNLOAD
28. Which of the following is a "Double-Membrane" organelle containing the cell's
genetic material?
Answer: Nucleus
Rationale: The nuclear envelope features pores that regulate the movement of substances in
and out.
29. "Peroxisomes" are specialized for:
Answer: Neutralizing free radicals and detoxifying alcohol
Rationale: They produce hydrogen peroxide as a byproduct of their metabolic reactions.
30. The "Cytoskeleton" is composed of which three structures?
Answer: Microtubules, Microfilaments, and Intermediate Filaments
Rationale: These provide structural support, motility, and act as "tracks" for moving organelles.
31. In the anatomical hierarchy, a group of similar cells working together to perform a
specific function is a:
Answer: Tissue
Rationale: Cells make up Tissues; Tissues make up Organs; Organs make up Organ Systems.
32. The skin is part of which organ system?
Answer: Integumentary System
Rationale: It provides protection, Vitamin D synthesis, and temperature regulation.
33. Which system is responsible for the transport of nutrients, gases, and wastes via
the blood?
Answer: Cardiovascular System
Rationale: It consists of the heart, blood vessels, and blood.
34. The "Epigastric Region" is located where in the nine abdominal regions?
Answer: Superior to the Umbilical Region
Rationale: "Epi-" means above; it sits above the stomach area.
35. A "Coronal" section through the body would divide it into:
Answer: Front and Back
Rationale: Coronal is synonymous with Frontal.
36. "Anabolism" refers to metabolic processes that:
Answer: Build larger molecules from smaller ones
Rationale: Catabolism breaks molecules down to release energy.
37. Which molecule is the primary "Energy Currency" of the cell?
Answer: ATP (Adenosine Triphosphate)
Rationale: Breaking the high-energy phosphate bonds releases the energy needed for cellular
work.
38. The tail-like structure that allows a human sperm cell to move is a:
Answer: Flagellum
Rationale: Cilia are shorter and move substances across the cell surface; microvilli increase
surface area.
