Question 1

Which of the following best describes the difference between cytology and histology?

Accepted Answer

Cytology is the study of cells, while histology is the study of tissues.

Question 2

Which feedback loop is responsible for amplifying an initial stimulus on a regulated variable, such as in blood clotting?

Accepted Answer

Positive feedback loop

Question 3

A scientist observes that heat leaves the body from the skin surface. What type of gradient is being described?

Accepted Answer

Temperature gradient

Question 4

Which of the following is NOT one of the 7 characteristics of life?

Accepted Answer

Photosynthesis

Question 5

Which organ system is primarily responsible for removing waste from the blood and regulating the body's fluid balance?

Accepted Answer

Urinary system

Question 6

Which type of chemical bond involves the transfer of electrons from one atom to another?

Accepted Answer

Ionic bond

Question 7

What is the correct formula for atomic mass?

Accepted Answer

$$	ext{Atomic mass} = p + n$$

Question 8

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

Accepted Answer

Cellular respiration

Question 9

Which property of water allows it to dissolve many ionic and polar substances, making it the universal solvent?

Accepted Answer

Water is polar and can dissolve ionic and polar substances

Question 10

Which of the following best describes the function of a pH buffer in blood?

Accepted Answer

It maintains equilibrium by releasing or binding H+ ions as needed

Question 11

Which macromolecule is synthesized primarily in the smooth endoplasmic reticulum?

Accepted Answer

Lipids

Question 12

What is the monomer of proteins and the type of bond connecting them?

Accepted Answer

Monomer: amino acid; Bond: peptide bond

Question 13

Which of the following is a correct example of a negative feedback loop in the human body?

Accepted Answer

Regulation of blood glucose

Question 14

Which level of structural organization in the human body consists of groups of similar cells performing a common function?

Accepted Answer

Tissue level

Question 15

Which of the following is NOT a major element found in living things?

Accepted Answer

Sodium

Question 16

Which organ system is responsible for sending electrical messages throughout the body?

Accepted Answer

Nervous system

Question 17

Which of the following best explains why enzymes are highly specific?

Accepted Answer

Enzymes have active sites with specific shapes for catalyzing reactions

Question 18

Which type of chemical signaling involves a cell releasing a signal that acts on itself?

Accepted Answer

Autocrine signaling

Question 19

Which of the following is the strongest type of chemical bond?

Accepted Answer

Covalent bond

Question 20

A solution with a high concentration of H+ ions will have which of the following characteristics?

Accepted Answer

A low pH and is considered acidic

Anatomy & Physiology: Foundational Concepts, Body Systems, and Biochemistry

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