Question 1

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

Accepted Answer

The shape of red blood cells allows them to carry oxygen efficiently.

Question 2

A patient is diagnosed with situs inversus, a condition where organ placement is reversed. Which statement is most accurate regarding anatomical variation?

Accepted Answer

Anatomical variation is common, and even identical twins can have differences.

Question 3

Which of the following is NOT a characteristic shared by all living organisms?

Accepted Answer

Ability to photosynthesize

Question 4

A person stands up quickly and feels dizzy. Which homeostatic mechanism is responsible for restoring blood pressure?

Accepted Answer

Negative feedback loop involving baroreceptors and the cardiac center

Question 5

Which of the following best describes a negative feedback loop?

Accepted Answer

A process that reverses a change to maintain homeostasis

Question 6

During childbirth, the release of oxytocin causes stronger uterine contractions, which in turn leads to more oxytocin release. This is an example of:

Accepted Answer

Positive feedback

Question 7

Which of the following statements about gradients is correct?

Accepted Answer

Blood flows from areas of higher pressure to areas of lower pressure.

Question 8

Which of the following is a function of sodium chloride (NaCl) in the human body?

Accepted Answer

Maintaining fluid balance and nerve impulse transmission

Question 9

Electrolyte balance is crucial in patient care because electrolytes:

Accepted Answer

Affect chemical reactivity, osmotic effects, and electrical excitability of nerve and muscle

Question 10

Which of the following is a property of a solution?

Accepted Answer

Solute particles are under 1 nm and do not scatter light

Question 11

A blood sample is left to stand and separates into plasma and cells. This is an example of:

Accepted Answer

Suspension

Question 12

Which equation correctly represents the general formula for carbohydrates?

Accepted Answer

$$ (CH_2O)_n $$

Question 13

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

Accepted Answer

Providing structural support to proteins

Question 14

Which of the following statements about lipids is correct?

Accepted Answer

Lipids provide more calories per gram than carbohydrates.

Question 15

Which of the following is a property of saturated fatty acids?

Accepted Answer

Carbon atoms are linked by single covalent bonds and the molecule is saturated with hydrogen.

Question 16

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

Accepted Answer

A polymer of amino acids with a unique three-dimensional conformation

Question 17

Extreme heat or pH can cause a protein to lose its function by:

Accepted Answer

Denaturation, which is a permanent conformational change

Question 18

Enzymes speed up chemical reactions by:

Accepted Answer

Lowering the activation energy required for the reaction

Question 19

Which of the following equations represents the breakdown of ATP to release energy?

Accepted Answer

$$ ATP ightarrow ADP + P_i + 	ext{energy} $$

Question 20

Which of the following is a correct pairing of DNA nitrogenous bases?

Accepted Answer

Adenine pairs with Thymine

Introduction to Anatomy & Physiology: Structure, Function, and Biochemistry

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