Question 1

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

Accepted Answer

The structure of a body part determines its function, and the function can also influence its structure.

Question 2

A patient is experiencing a rapid drop in blood pressure. Which type of feedback mechanism is most likely to restore homeostasis?

Accepted Answer

Negative feedback, which counteracts the drop and returns blood pressure to normal.

Question 3

Which of the following is NOT a characteristic of living things?

Accepted Answer

Inability to respond to environmental changes

Question 4

A solution has a hydrogen ion concentration of $$1 	imes 10$$^{-7}$$ M. What is its pH?

Accepted Answer

$$pH = 7$$

Question 5

Which of the following best describes the plasma membrane of a cell?

Accepted Answer

A flexible, selectively permeable phospholipid bilayer with embedded proteins.

Question 6

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

Accepted Answer

Formation of a platelet plug during blood clotting.

Question 7

A red blood cell is placed in a hypotonic solution. What will happen to the cell?

Accepted Answer

It will swell and possibly burst due to water entering the cell.

Question 8

Which organ system is primarily responsible for transporting nutrients, gases, and wastes throughout the body?

Accepted Answer

Cardiovascular system

Question 9

Which of the following best describes the process of transcription?

Accepted Answer

Copying DNA into mRNA in the nucleus.

Question 10

Which of the following is a correct sequence of levels of organization in the human body, from simplest to most complex?

Accepted Answer

Cell → Tissue → Organ → Organ system → Organism

Question 11

Which of the following statements about enzymes is TRUE?

Accepted Answer

Enzymes lower the activation energy and speed up chemical reactions.

Question 12

A patient has a genetic mutation that prevents the formation of aquaporins in kidney cells. Which process would be most directly affected?

Accepted Answer

Osmosis of water

Question 13

Which of the following best describes the difference between mitosis and meiosis?

Accepted Answer

Mitosis results in two diploid cells, while meiosis results in four haploid cells.

Question 14

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

Accepted Answer

Acts as a 'sugar coat' involved in cell recognition and communication

Question 15

Which of the following best describes the role of buffers in biological systems?

Accepted Answer

Buffers resist changes in pH by accepting or donating hydrogen ions.

Question 16

A molecule of glucose ($$C_6H_{12}O_6$) is completely oxidized in cellular respiration. What is the overall balanced equation for this process?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O$$

Question 17

Which of the following is a real-life example of the importance of the phospholipid bilayer's amphipathic nature?

Accepted Answer

It enables the formation of a selective barrier, crucial for nerve impulse transmission.

Question 18

Which of the following best explains why saturated fats are solid at room temperature while unsaturated fats are liquid?

Accepted Answer

Unsaturated fats have double bonds that create kinks, preventing tight packing.

Question 19

Which of the following is a correct pairing of anatomical directional terms?

Accepted Answer

The skin is superficial to the skeletal muscles.

Introduction to Human Anatomy and Physiology: Organization, Terminology, and Homeostasis

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