Question 1

Which of the following best describes the difference between an organ and an organ system?

Accepted Answer

An organ is a group of similar cells performing a specific function, while an organ system is a group of organs working together to perform complex functions.

Question 2

A patient is experiencing muscle cramps due to an imbalance in their body fluids. Which type of feedback system is most likely involved in restoring homeostasis, and what is the main difference between negative and positive feedback?

Accepted Answer

Negative feedback; negative feedback reverses a change to maintain homeostasis, while positive feedback amplifies the change.

Question 3

Which of the following best defines histology?

Accepted Answer

The study of tissues and their microscopic structure.

Question 4

A cell is placed in a solution and begins to swell and eventually bursts. Which type of solution was the cell placed in, and what is the term for this process?

Accepted Answer

Hypotonic solution; the process is called lysis.

Question 5

Which of the following equations correctly represents the process of glycolysis?

Accepted Answer

$$C_6H_{12}O_6$ + 2NAD^+ + 2ADP + 2P_i \rightarrow 2C_3H_4O_3 + 2NADH + 2ATP + 2H_2O$$

Question 6

Which of the following is NOT a function of the plasma membrane?

Accepted Answer

Synthesizing proteins for export from the cell.

Question 7

A biopsy reveals a tissue sample with cells that are tightly packed, have a free surface, and are avascular. Which type of tissue is this most likely to be?

Accepted Answer

Epithelial tissue

Question 8

Which of the following best describes the difference between exocrine and endocrine glands?

Accepted Answer

Exocrine glands secrete their products into ducts, while endocrine glands release hormones directly into the bloodstream.

Question 9

A patient has a genetic mutation that affects the function of their sodium-potassium pump. Which of the following best describes the process that is directly impaired?

Accepted Answer

Active transport

Question 10

Which of the following is a correct sequence of events in protein synthesis?

Accepted Answer

DNA replication $$\rightarrow$$ transcription $$\rightarrow$$ translation

Question 11

Which of the following best describes the function of tight junctions between epithelial cells?

Accepted Answer

They prevent the passage of substances between adjacent cells.

Question 12

A person is suffering from dehydration. Which type of solution should be administered intravenously to avoid causing cells to shrink or swell?

Accepted Answer

Isotonic solution

Question 13

Which of the following is a function of lysosomes in a cell?

Accepted Answer

Digesting and recycling cellular waste and foreign material.

Question 14

Which of the following best describes the difference between mitosis and meiosis?

Accepted Answer

Mitosis produces two genetically identical diploid cells, while meiosis produces four genetically unique haploid cells.

Question 15

A sample of connective tissue is found to contain a large amount of collagen fibers and very few cells. Which type of connective tissue is this most likely to be?

Accepted Answer

Dense regular connective tissue

Question 16

Which of the following best describes the function of the serous membrane?

Accepted Answer

It lines body cavities that do not open to the exterior and reduces friction between organs.

Question 17

Which of the following is a correct description of the anatomical position?

Accepted Answer

Standing upright, facing forward, arms at the sides with palms facing forward.

Question 18

A researcher is studying the movement of oxygen from the alveoli of the lungs into the blood. Which process is primarily responsible for this movement?

Accepted Answer

Simple diffusion

Question 19

Which of the following best describes the function of mitochondria in a cell?

Accepted Answer

They produce ATP through aerobic respiration.

Question 20

A patient has a disorder affecting the function of their gap junctions. Which of the following symptoms might you expect?

Accepted Answer

Impaired electrical conduction in cardiac muscle.

Anatomy & Physiology Study Guide: Human Body Organization, Cellular Level, and Tissues

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