Question 1

Which principle explains why the structure of a body part is directly related to its function, and can you identify an example of this in the human body?

Accepted Answer

Principle of complementarity of structure and function; for example, alveoli in the lungs have thin walls to facilitate gas exchange.

Question 2

Arrange the following levels of structural organization in the human body from smallest to largest: organ, cell, tissue, organ system, molecule.

Accepted Answer

Molecule, cell, tissue, organ, organ system

Question 3

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

Accepted Answer

Regulation of blood glucose by insulin

Question 4

A patient is experiencing hypothermia. Which essential body function is failing, and which organ system is primarily responsible for correcting this?

Accepted Answer

Temperature regulation; nervous system

Question 5

Which of the following elements makes up the bulk of your body weight?

Accepted Answer

Oxygen

Question 6

Which type of chemical bond is responsible for the unique properties of water, such as its high surface tension and ability to dissolve salts?

Accepted Answer

Hydrogen bonds

Question 7

Given the equation for the dissociation of carbonic acid in blood: $$\mathrm{H_2CO_3 \rightleftharpoons $$HCO_3$$^- + H^+}$$, what is the primary buffer system in human blood?

Accepted Answer

Bicarbonate buffer system

Question 8

Which macromolecule is primarily responsible for catalyzing chemical reactions in the body, and what is the term for this type of molecule?

Accepted Answer

Protein; enzyme

Question 9

A patient has a genetic mutation that affects the structure of hemoglobin. Which level of protein structure is most directly impacted by a single amino acid change?

Accepted Answer

Primary structure

Question 10

Which of the following best describes the difference between saturated and unsaturated fatty acids?

Accepted Answer

Saturated fatty acids have only single bonds; unsaturated fatty acids have one or more double bonds.

Question 11

Which vitamin is fat-soluble and important for vision, and what is its chemical name?

Accepted Answer

Vitamin A; retinol

Question 12

Which of the following is a function of proteins in the body?

Accepted Answer

Catalyzing reactions

Question 13

A cell is placed in a solution and swells until it bursts. What type of solution was the cell placed in?

Accepted Answer

Hypotonic solution

Question 14

Which organelle is responsible for producing ATP, the cell's main energy currency?

Accepted Answer

Mitochondrion

Question 15

Which process describes the movement of water across a selectively permeable membrane from an area of low solute concentration to high solute concentration?

Accepted Answer

Osmosis

Question 16

Which phase of the cell cycle is characterized by DNA replication?

Accepted Answer

S phase

Question 17

A patient has a burn that affects the epidermis and part of the dermis. What type of burn is this?

Accepted Answer

Second-degree burn

Question 18

Which cell type in the skin is responsible for producing the pigment melanin?

Accepted Answer

Melanocyte

Question 19

Which of the following best describes the process of metastasis in cancer?

Accepted Answer

Cancer cells spread from the original site to other parts of the body.

Question 20

Which of the following is NOT a function of the integumentary system?

Accepted Answer

Blood cell production

Anatomy & Physiology Study Guide: Key Concepts and Review Questions

Guida di studio - Domande di pratica

Study guide - Flashcard