Question 1

Which of the following best describes the main function of the mitochondrion in a eukaryotic cell?

Accepted Answer

Production of most of the cell's ATP through aerobic respiration

Question 2

A scientist wants to observe the detailed surface structure of cilia on a respiratory tract cell. Which microscopy technique should they use?

Accepted Answer

Scanning electron microscopy (SEM)

Question 3

Which of the following statements about the cell membrane is correct?

Accepted Answer

Cholesterol molecules within the membrane increase its rigidity and stability.

Question 4

Which process is responsible for the movement of water across a selectively permeable membrane from an area of low solute concentration to high solute concentration?

Accepted Answer

Osmosis

Question 5

A cell is placed in a solution with a higher concentration of solutes than its cytoplasm. What will most likely happen to the cell?

Accepted Answer

Water will move out of the cell, causing it to shrink.

Question 6

Which of the following organelles is directly involved in the synthesis of proteins that are exported from the cell?

Accepted Answer

Rough endoplasmic reticulum

Question 7

Which of the following best describes the role of the Golgi apparatus in a cell?

Accepted Answer

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

Question 8

Which of the following is a function of lysosomes?

Accepted Answer

Digestion of cellular debris and pathogens

Question 9

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 10

Which of the following cell junctions allows for the direct passage of ions and small molecules between adjacent cells?

Accepted Answer

Gap junction

Question 11

A mutation prevents the formation of microtubules in a cell. Which of the following processes would be most directly affected?

Accepted Answer

Chromosome separation during mitosis

Question 12

Which of the following best describes the difference between facilitated diffusion and active transport?

Accepted Answer

Facilitated diffusion moves substances down their concentration gradient, while active transport moves substances against their concentration gradient.

Question 13

Which of the following is a correct statement about chromatin?

Accepted Answer

It is the loosely coiled form of DNA found in non-dividing cells.

Question 14

Which of the following is NOT a function of the cytoskeleton?

Accepted Answer

Synthesizing proteins

Question 15

Which of the following best describes the sodium-potassium pump?

Accepted Answer

It uses ATP to move sodium out of the cell and potassium into the cell.

Question 16

Which of the following is a real-life example of receptor-mediated endocytosis?

Accepted Answer

Absorption of cholesterol by liver cells

Question 17

Which of the following best explains why cells have different shapes and sizes?

Accepted Answer

The structure of a cell is determined by its function and the specific tasks it performs.

Question 18

Which of the following is a function of the nucleolus?

Accepted Answer

Synthesis of ribosomal RNA and assembly of ribosomal subunits

Question 19

Which of the following best describes the process of exocytosis?

Accepted Answer

Release of cellular wastes or secretory products when vesicles fuse with the plasma membrane

Question 20

Which of the following is a correct equation for the movement of sodium and potassium ions by the sodium-potassium pump?

Accepted Answer

$$3 \mathrm{Na}^+_{	ext{(in)}} + 2 \mathrm{K}^+_{	ext{(out)}} + \mathrm{ATP} ightarrow 3 \mathrm{Na}^+_{	ext{(out)}} + 2 \mathrm{K}^+_{	ext{(in)}} + \mathrm{ADP} + \mathrm{P}_i$$

Cell Structure and Function: Foundations of Anatomy & Physiology

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드