Question 1

Which principle explains why the structure of the alveoli in the lungs is thin and highly vascularized to maximize gas exchange efficiency?

Accepted Answer

Principle of complementarity of structure and function

Question 2

A patient is lying face up on an examination table. What is the correct anatomical term for this position?

Accepted Answer

Supine

Question 3

Which body cavity contains the heart and is surrounded by a serous membrane?

Accepted Answer

Pericardial cavity

Question 4

A solution with a higher solute concentration than the cell will cause water to move out of the cell, resulting in cell shrinkage. What is this type of solution called?

Accepted Answer

Hypertonic solution

Question 5

Which organelle is responsible for producing ATP through aerobic metabolism?

Accepted Answer

Mitochondria

Question 6

A chemical reaction in the body breaks down glycogen into glucose molecules. What type of reaction is this?

Accepted Answer

Decomposition reaction

Question 7

Which of the following best describes the function of enzymes in biochemical reactions?

Accepted Answer

Enzymes lower the activation energy and speed up reactions.

Question 8

A molecule of water ($$H_2O) is $$formed by sharing electrons between hydrogen and oxygen atoms. What type of bond is present between the hydrogen and oxygen atoms?

Accepted Answer

Covalent bond

Question 9

Which anatomical plane divides the body into left and right portions?

Accepted Answer

Sagittal plane

Question 10

A patient presents with swelling in the lower right quadrant of the abdomen. Which anatomical region is most likely affected?

Accepted Answer

Right lower quadrant

Question 11

Which of the following is a function of the plasma membrane?

Accepted Answer

Physical isolation and selective transport

Question 12

If a cell is placed in a hypotonic solution, what is the most likely outcome?

Accepted Answer

The cell will swell and may lyse due to water gain.

Question 13

Which of the following best describes the role of buffers in the body?

Accepted Answer

Buffers maintain stable pH by neutralizing acids and bases.

Question 14

A molecule has a partial positive charge on one side and a partial negative charge on the other due to unequal sharing of electrons. What type of bond is responsible for this?

Accepted Answer

Polar covalent bond

Question 15

Which organelle modifies, packages, and sorts proteins for secretion or delivery to other organelles?

Accepted Answer

Golgi apparatus

Question 16

Which of the following is true regarding isotopes?

Accepted Answer

Isotopes have different numbers of neutrons.

Question 17

A cell is observed to have many lysosomes. What is the most likely function of this cell?

Accepted Answer

Digestion of cellular debris and foreign material

Question 18

Which of the following best describes the process of homeostatic regulation by the nervous system?

Accepted Answer

Extrinsic regulation

Question 19

Calculate the number of moles in 18 grams of water ($$H_2O$$), given that the molecular weight of water is $$18 \mathrm{g/mol}.$$

Accepted Answer

$$1$$ mole

Question 20

Which organelle is responsible for breaking down hydrogen peroxide ($$H_2O_2) in $$cells?

Accepted Answer

Peroxisome

An Introduction to Anatomy, Physiology, and the Chemical & Cellular Levels of Organization

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