Q: Which of the following is a correct formula for calculating atomic mass?

$$ \text{Atomic mass} = \text{Number of protons} + \text{Number of neutrons} $$

Question 1

Which of the following best describes the relationship between anatomy and physiology?

Accepted Answer

Anatomy studies the structure of body parts, while physiology studies their function.

Question 2

Which of the following is NOT one of the 11 organ systems of the human body?

Accepted Answer

Sensory system

Question 3

Homeostasis is best defined as:

Accepted Answer

The maintenance of a stable internal environment despite external changes.

Question 4

A patient is experiencing a rapid increase in blood clotting after an injury. Which type of feedback mechanism is involved?

Accepted Answer

Positive feedback

Question 5

Which of the following correctly describes the anatomical position?

Accepted Answer

Standing upright, arms at sides, palms facing forward

Question 6

Which of the following is a correct formula for calculating atomic mass?

Accepted Answer

$$ 	ext{Atomic mass} = 	ext{Number of protons} + 	ext{Number of neutrons} $$

Question 7

Which of the following best describes the difference between ionic and covalent bonds?

Accepted Answer

Ionic bonds involve transferring electrons, while covalent bonds involve sharing electrons.

Question 8

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

Accepted Answer

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

Question 9

Which of the following is a characteristic of facilitated diffusion?

Accepted Answer

It uses carrier proteins to move substances down their concentration gradient.

Question 10

Which organelle is responsible for producing ATP through cellular respiration?

Accepted Answer

Mitochondrion

Question 11

During DNA replication, which process ensures that each new DNA molecule contains one old strand and one new strand?

Accepted Answer

Semiconservative replication

Question 12

Which of the following best describes the role of mRNA in protein synthesis?

Accepted Answer

mRNA carries the genetic code from DNA to the ribosome.

Question 13

Which of the following is a correct sequence of events in the cell cycle?

Accepted Answer

G1 phase → S phase → G2 phase → M phase

Question 14

Which of the following best describes apoptosis?

Accepted Answer

Programmed cell death that removes damaged or unnecessary cells.

Question 15

Which of the following is a major structural element of connective tissue?

Accepted Answer

Collagen fibers

Question 16

Which of the following best differentiates exocrine and endocrine glands?

Accepted Answer

Exocrine glands secrete products onto body surfaces or into body cavities, while endocrine glands secrete hormones directly into the bloodstream.

Question 17

A patient is diagnosed with a disorder affecting the sodium-potassium pump. Which equation best represents the movement of ions during one cycle of the pump?

Accepted Answer

$$ 3	ext{Na}^+ 	ext{out}, 2	ext{K}^+ 	ext{in} $$

Question 18

Which of the following best describes the difference between phagocytosis and pinocytosis?

Accepted Answer

Phagocytosis involves engulfing solid particles, while pinocytosis involves engulfing liquid droplets.

Question 19

Which of the following is a correct description of the role of water in the human body?

Accepted Answer

Water serves as a solvent, helps regulate temperature, and participates in chemical reactions.

Question 20

Which of the following best describes the function of the Golgi apparatus?

Accepted Answer

It packages, modifies, and sorts proteins for secretion or delivery to other organelles.

Exam 1 Learning Objectives: Human Body Orientation, Chemistry, Cells, and Tissues

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