Question 1

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

Accepted Answer

The process by which the body maintains a stable internal environment despite external changes.

Question 2

A patient presents with a deep wound on the anterior side of the forearm. Which anatomical term best describes the location of the wound?

Accepted Answer

Ventral

Question 3

Which of the following is an example of a negative feedback mechanism in the human body?

Accepted Answer

Regulation of blood glucose levels by insulin and glucagon

Question 4

Which of the following best represents the correct order of structural organization in the human body from simplest to most complex?

Accepted Answer

Atom → molecule → cell → tissue → organ → organ system → organism

Question 5

A solution contains $\mathrm{NaCl}$ dissolved in water. Which of the following statements is true regarding this solution?

Accepted Answer

$\mathrm{NaCl}$ is the solute and water is the solvent.

Question 6

Which of the following best describes the difference between a covalent bond and an ionic bond?

Accepted Answer

A covalent bond involves the sharing of electrons, while an ionic bond involves the transfer of electrons.

Question 7

A patient is experiencing acidosis, with a blood pH of 7.1. Which of the following best describes this condition?

Accepted Answer

The blood is more acidic than normal, as normal blood pH is approximately 7.4.

Question 8

Which of the following best describes the function of enzymes in biological reactions?

Accepted Answer

They lower the activation energy required for a reaction to occur.

Question 9

Which of the following is a correct pairing of a macromolecule and its monomer?

Accepted Answer

Protein – amino acid

Question 10

A patient is unable to produce sufficient ATP. Which organelle is most likely malfunctioning?

Accepted Answer

Mitochondrion

Question 11

Which of the following best describes the difference between DNA and RNA?

Accepted Answer

DNA contains deoxyribose sugar and is double-stranded; RNA contains ribose sugar and is single-stranded.

Question 12

Which of the following best explains why water is considered a polar molecule?

Accepted Answer

It has a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom.

Question 13

Which of the following is an example of a catabolic reaction?

Accepted Answer

The breakdown of glycogen into glucose molecules

Question 14

A buffer system in the blood helps maintain pH by:

Accepted Answer

Releasing or binding hydrogen ions ($\mathrm{H^+}$) as needed.

Question 15

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

Accepted Answer

They synthesize proteins by linking amino acids together.

Question 16

Which of the following is a correct complementary base pairing in DNA?

Accepted Answer

Adenine (A) pairs with Thymine (T)

Question 17

A patient is given a solution that contains electrolytes. Which of the following best describes an electrolyte?

Accepted Answer

A substance that dissociates into ions when dissolved in water and conducts electricity.

Question 18

Which of the following best describes the difference between a saturated and an unsaturated fatty acid?

Accepted Answer

A saturated fatty acid has no double bonds between carbon atoms; an unsaturated fatty acid has one or more double bonds.

Question 19

Which of the following best describes the process of translation in protein synthesis?

Accepted Answer

The process by which mRNA is decoded to produce a specific polypeptide chain.

Question 20

A patient is diagnosed with a genetic disorder caused by a mutation in a gene. Which of the following best describes the role of genes?

Accepted Answer

Genes are segments of DNA that code for specific proteins.

Anatomy & Physiology: Foundational Concepts and Chemistry Review

Study Guide - Practice Questions