Q: A patient has a genetic mutation that affects the sodium-potassium pump in their cells. Which equation best represents the normal function of this pump?

$$3 \text{Na}^+_{out} : 2 \text{K}^+_{in}$$

Question 1

Which of the following statements best describes the concept of selective permeability in plasma membranes?

Accepted Answer

The plasma membrane regulates the movement of certain substances while restricting others based on size, charge, and solubility.

Question 2

A red blood cell is placed in a hypotonic solution. What is the most likely outcome?

Accepted Answer

The cell will swell and may burst due to water influx.

Question 3

Which organelle is primarily responsible for producing ATP through cellular respiration?

Accepted Answer

Mitochondrion

Question 4

Which process involves the movement of molecules from an area of higher concentration to an area of lower concentration without the use of energy?

Accepted Answer

Simple diffusion

Question 5

A mutation disrupts the function of spindle fibers during mitosis. What is the most likely consequence for the cell?

Accepted Answer

Chromosomes will not separate properly, leading to abnormal daughter cells.

Question 6

Which of the following best describes the difference between passive and active transport across the plasma membrane?

Accepted Answer

Passive transport moves substances down their concentration gradient without energy, while active transport moves substances against their gradient using ATP.

Question 7

Which of the following is a function of the Golgi apparatus?

Accepted Answer

Packaging and modifying proteins for secretion

Question 8

During osmosis, water moves across a semipermeable membrane. Which equation best represents the net movement of water?

Accepted Answer

$$\Delta \Psi = \Psi_{inside} - \Psi_{outside}$$

Question 9

Which of the following best describes the role of DNA in the cell?

Accepted Answer

DNA stores genetic information and instructions for protein synthesis.

Question 10

Which event occurs during the metaphase stage of mitosis?

Accepted Answer

Chromosomes align at the cell's equatorial plane.

Question 11

A patient has a genetic mutation that affects the sodium-potassium pump in their cells. Which equation best represents the normal function of this pump?

Accepted Answer

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

Question 12

Which of the following is NOT a function of the plasma membrane?

Accepted Answer

Synthesizing proteins

Question 13

Which organelle contains hydrolytic enzymes for intracellular digestion?

Accepted Answer

Lysosome

Question 14

Which of the following best describes exocytosis?

Accepted Answer

The process by which cells release substances to the exterior by vesicle fusion with the plasma membrane.

Question 15

Which of the following is a real-world example of active transport in human cells?

Accepted Answer

Glucose uptake in the intestines via sodium-glucose cotransporter

Question 16

Which stage of the cell cycle is characterized by DNA replication?

Accepted Answer

S phase

Question 17

Which of the following best describes the difference between cytoplasm and cytosol?

Accepted Answer

Cytoplasm includes all cellular contents between the plasma membrane and nucleus, while cytosol is the fluid portion of the cytoplasm.

Question 18

Which of the following best describes the function of microvilli?

Accepted Answer

Increasing surface area for absorption

Question 19

Which of the following is a consequence of mutations that disrupt normal control processes in cell division?

Accepted Answer

Cancer

Question 20

Which of the following best describes the process of endocytosis?

Accepted Answer

The uptake of large molecules or particles by the cell through vesicle formation

Cell Structure, Membrane Transport, and Cell Division: Study Notes for Anatomy & Physiology

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