Question 1

Which of the following best illustrates the principle of complementarity of structure and function in human anatomy?

Accepted Answer

The heart's muscular walls allow it to pump blood efficiently throughout the body.

Question 2

A patient presents with a stab wound to the left hypochondriac region. Which organ is most likely to be affected?

Accepted Answer

Spleen

Question 3

Which feedback mechanism is responsible for the rapid increase in oxytocin during childbirth, leading to stronger uterine contractions?

Accepted Answer

Positive feedback

Question 4

Which of the following is NOT a survival need of the human body?

Accepted Answer

Reproduction

Question 5

A solution has a pH of 3. Which of the following statements is correct?

Accepted Answer

The solution is acidic and has a high concentration of $$\mathrm{H^+}$$ ions.

Question 6

Which of the following best describes the process of dehydration synthesis?

Accepted Answer

Two molecules are joined together by removing a molecule of water: $$	ext{A} + 	ext{B} ightarrow 	ext{AB} + \mathrm{H_2O}$$

Question 7

Which of the following is a correct description of a radioisotope?

Accepted Answer

An isotope that is unstable and emits radiation as it decays.

Question 8

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

Accepted Answer

Storing genetic information

Question 9

A patient is suffering from metabolic acidosis. Which buffer system in the blood helps maintain pH homeostasis?

Accepted Answer

Bicarbonate buffer system: $$\mathrm{CO_2$} + \mathrm{H_2O} \leftrightarrow \mathrm{H_2CO_3} \leftrightarrow \mathrm{H^+} + \mathrm{$$HCO_3$$^-}$$

Question 10

Which of the following statements about ATP is correct?

Accepted Answer

ATP stores energy in its high-energy phosphate bonds: $$\mathrm{ATP} ightarrow \mathrm{ADP} + \mathrm{P_i} + 	ext{energy}$$

Question 11

Which of the following best describes a polar covalent bond?

Accepted Answer

Electrons are shared unequally between atoms, resulting in partial charges.

Question 12

Which of the following is a correct example of a synthesis reaction?

Accepted Answer

$$\mathrm{A} + \mathrm{B} \rightarrow \mathrm{AB}$$

Question 13

Which of the following is true regarding the anatomical position?

Accepted Answer

The body is standing upright, facing forward, with arms at the sides and palms facing forward.

Question 14

Which of the following is a characteristic of a mixture, but NOT of a compound?

Accepted Answer

Components can be separated by physical means.

Question 15

Which of the following is a correct description of anabolism?

Accepted Answer

The process of building complex molecules from simpler ones, requiring energy.

Question 16

Which of the following is NOT one of the four elements that form the bulk of the human body?

Accepted Answer

Calcium

Question 17

A patient is experiencing muscle cramps due to low sodium levels. Which type of chemical bond is most responsible for the formation of sodium chloride ($$\mathrm{NaCl}) in $$the body?

Accepted Answer

Ionic bond

Question 18

Which of the following best describes the tertiary structure of a protein?

Accepted Answer

The overall three-dimensional shape formed by interactions among R groups.

Question 19

Which of the following statements correctly compares DNA and RNA?

Accepted Answer

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

Question 20

Which of the following factors would NOT increase the rate of a chemical reaction in the human body?

Accepted Answer

Decreasing temperature

Foundations of Anatomy & Physiology: Organization, Chemistry, and Homeostasis

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