Question 1

Which of the following best describes the concept of homeostasis in human physiology?

Accepted Answer

The body's ability to maintain a stable internal environment despite changes in external conditions.

Question 2

A patient is experiencing a fever. Which feedback mechanism is most likely responsible for returning their body temperature to normal?

Accepted Answer

Negative feedback

Question 3

Which organelle is primarily responsible for ATP synthesis in eukaryotic cells?

Accepted Answer

Mitochondria

Question 4

A red blood cell is placed in a hypotonic solution. What is the most likely outcome?

Accepted Answer

The cell will swell and may lyse due to water influx.

Question 5

Which tissue type lines body surfaces and cavities, providing protection and selective permeability?

Accepted Answer

Epithelial tissue

Question 6

During mitosis, which phase is characterized by chromosomes aligning along the equator of the cell?

Accepted Answer

Metaphase

Question 7

Which of the following best describes the function of the Golgi apparatus?

Accepted Answer

Modifies, sorts, and packages proteins for secretion.

Question 8

A solution with a higher concentration of nonpermeable solutes compared to the cell cytoplasm is called:

Accepted Answer

Hypertonic

Question 9

Which anatomical plane divides the body into equal right and left halves?

Accepted Answer

Midsagittal plane

Question 10

If a cell is placed in an isotonic solution, what will happen to its volume?

Accepted Answer

It will remain unchanged.

Question 11

Which organ system is responsible for transporting oxygen, nutrients, and hormones throughout the body?

Accepted Answer

Cardiovascular system

Question 12

Which of the following best describes the function of lysosomes?

Accepted Answer

Breakdown of waste materials and cellular debris.

Question 13

Which directional term refers to a structure closer to the point of attachment to the body?

Accepted Answer

Proximal

Question 14

Which organelle is the site of protein synthesis?

Accepted Answer

Ribosome

Question 15

A patient is diagnosed with edema due to excess fluid in the interstitial space. Which process is most directly involved in the movement of water across cell membranes?

Accepted Answer

Osmosis

Question 16

Which of the following is the correct order of levels of organization in the human body, from smallest to largest?

Accepted Answer

Atom, macromolecule, organelle, cell, tissue, organ, organ system, organism

Question 17

Which process is responsible for the division of the cytoplasm during cell division?

Accepted Answer

Cytokinesis

Question 18

Which of the following best describes the function of connective tissue?

Accepted Answer

Supports and binds other tissues.

Question 19

A cell is placed in a hypertonic solution. Using the concept of tonicity, predict the change in cell volume and provide the relevant equation for osmotic pressure.

Accepted Answer

The cell will decrease in volume as water leaves; osmotic pressure is given by $\Pi = iMRT$

Question 20

Which phase of mitosis is characterized by the separation of sister chromatids and their movement toward opposite poles?

Accepted Answer

Anaphase

Anatomy & Physiology: Foundational Concepts and Cellular Structure

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