Question 1

Which of the following best describes the difference between gross anatomy and microscopic anatomy?

Accepted Answer

Gross anatomy examines structures visible to the naked eye, while microscopic anatomy focuses on structures only visible with a microscope.

Question 2

A patient is experiencing difficulty maintaining a stable internal body temperature. Which physiological process is most directly responsible for correcting deviations from the set point in this scenario?

Accepted Answer

Negative feedback

Question 3

Which of the following is an example of a positive feedback mechanism in the human body?

Accepted Answer

Blood clotting after an injury

Question 4

Which level of structural organization is correctly matched with its description?

Accepted Answer

Organ level – organs are made up of two or more tissue types working together

Question 5

A scientist is studying the plasma membrane of a cell. Which of the following best describes the function of the plasma membrane?

Accepted Answer

It acts as a selective barrier, controlling the movement of substances in and out of the cell.

Question 6

Which of the following is NOT a necessary function for life as listed in the study materials?

Accepted Answer

Photosynthesis

Question 7

A patient has a blood pH of 7.2. According to the study materials, which condition does this indicate?

Accepted Answer

Acidosis

Question 8

Which of the following best explains why water is an excellent solvent for many substances in the body?

Accepted Answer

Water is a polar covalent molecule that forms hydrogen bonds.

Question 9

Which of the following is a correct pairing of a macromolecule and its building block?

Accepted Answer

Carbohydrates – monosaccharides

Question 10

A molecule of sodium chloride (NaCl) is formed by which type of chemical bond?

Accepted Answer

Ionic bond

Question 11

Which of the following best describes the difference between anabolism and catabolism?

Accepted Answer

Anabolism builds complex molecules from simpler ones, while catabolism breaks down complex molecules into simpler ones.

Question 12

Which of the following is a function of the lymphatic system as described in the study materials?

Accepted Answer

Picks up fluid leaked from blood vessels and returns it to blood

Question 13

A solution has a pH of 8.5. According to the study materials, which of the following statements is true?

Accepted Answer

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

Question 14

Which of the following is a polysaccharide and its primary function in animals?

Accepted Answer

Glycogen – energy storage

Question 15

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

Accepted Answer

Hydrogen and covalent bonds between amino acids that are farther apart, causing the protein to have a 3-D structure

Question 16

A patient is unable to digest milk sugar due to a lack of a specific enzyme. Which disaccharide and enzyme are involved in this condition?

Accepted Answer

Lactose and lactase

Question 17

Which of the following is NOT a component of a nucleotide, the building block of nucleic acids?

Accepted Answer

Amino acid

Question 18

Which of the following best explains why saturated fats are considered less healthy than unsaturated fats?

Accepted Answer

Saturated fats have only single bonds, making them solid at room temperature and more likely to contribute to heart disease.

Question 19

Which of the following best describes the role of negative feedback in homeostasis?

Accepted Answer

It counteracts a change by triggering a response that returns the system to its set point.

Question 20

Which of the following is a correct statement about isotopes and their use in medicine?

Accepted Answer

Isotopes are atoms of the same element with different numbers of neutrons, and some are used in diagnostic imaging.

Introduction to Human Anatomy and Physiology: Study Notes

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