$\text{Molarity} = \frac{\text{moles of solute}}{\text{liters of solution}}$

Question 1

Which of the following correctly lists the levels of structural organization in the human body from smallest to largest?

Accepted Answer

Sub-atomic particles, atoms, molecules, macromolecules, cells, tissues, organs, organ systems, organism

Question 2

Which of the following is an example of negative feedback in human physiology?

Accepted Answer

Sweating to cool the body when overheated

Question 3

A patient stands up quickly and feels lightheaded. Which component of the negative feedback loop detects the initial drop in blood pressure?

Accepted Answer

Receptor

Question 4

Which organ system is primarily responsible for transporting nutrients, gases, and wastes throughout the body?

Accepted Answer

Cardiovascular system

Question 5

Which term describes the maintenance of a stable internal environment in the body?

Accepted Answer

Homeostasis

Question 6

During a fever, the hypothalamus raises the body's set point for temperature. Which part of the feedback loop is the hypothalamus acting as?

Accepted Answer

Control center

Question 7

Which of the following best describes a positive feedback loop?

Accepted Answer

It moves the system away from the set point, amplifying the original stimulus.

Question 8

Which of the following is a function of the integumentary system?

Accepted Answer

Protection against microbes and environmental hazards

Question 9

Which equation represents a synthesis reaction in human metabolism?

Accepted Answer

$A + B \rightarrow AB$

Question 10

Which of the following is NOT a major function of water in the human body?

Accepted Answer

Provides energy for cellular processes

Question 11

A person is exposed to cold weather. Which physiological response is most likely to occur as part of a negative feedback loop?

Accepted Answer

Shivering due to muscle contractions

Question 12

Which of the following best describes catabolism?

Accepted Answer

Breaking down molecules into smaller units, releasing energy

Question 13

Which organ system is responsible for removing metabolic waste and maintaining water balance?

Accepted Answer

Urinary system

Question 14

Which of the following is a correct example of anatomical terminology?

Accepted Answer

Cranial refers to the skull

Question 15

Which of the following is true about enzymes in human metabolism?

Accepted Answer

Enzymes lower the activation energy required for reactions

Question 16

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

Accepted Answer

Standing upright, arms at sides, palms facing forward

Question 17

Which of the following is a correct formula for calculating molarity?

Accepted Answer

$	ext{Molarity} = \frac{	ext{moles of solute}}{	ext{liters of solution}}$

Question 18

Which of the following is an example of an exergonic reaction in human metabolism?

Accepted Answer

Breakdown of glucose to release energy

Question 19

Which of the following is a correct description of the cranial cavity?

Accepted Answer

Contains the brain

Question 20

Which of the following best describes the role of the effector in a feedback loop?

Accepted Answer

Carries out the response to restore homeostasis

Introduction to Anatomy & Physiology: Structural Organization, Homeostasis, and Terminology

Study Guide - Practice Questions