Q: Which equation correctly represents the relationship for diffusion rate according to Fick's Law?

$D = k \times A \times \frac{\Delta C}{d}$

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 energy production in the cell?

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 patient has a genetic mutation that disrupts the function of spindle fibers during mitosis. What is the most likely cellular consequence?

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

Which equation correctly represents the relationship for diffusion rate according to Fick's Law?

Accepted Answer

$D = k 	imes A 	imes \frac{\Delta C}{d}$

Question 8

Which of the following is NOT a function of the Golgi apparatus?

Accepted Answer

Energy production

Question 9

During osmosis, water moves across a semipermeable membrane. Which direction does water move?

Accepted Answer

From an area of lower solute concentration to an area of higher solute concentration

Question 10

Which of the following best describes the function of DNA in a cell?

Accepted Answer

DNA stores genetic information and instructions for protein synthesis.

Question 11

Which organelle is responsible for breaking down waste materials and cellular debris?

Accepted Answer

Lysosome

Question 12

Which of the following best describes exocytosis?

Accepted Answer

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

Question 13

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

Accepted Answer

Sodium-potassium pump maintaining ion gradients across the plasma membrane

Question 14

Which stage of mitosis is characterized by the alignment of chromosomes along the cell's equator?

Accepted Answer

Metaphase

Question 15

A cell is placed in a hypertonic solution. What will happen to the cell?

Accepted Answer

It will shrink due to water loss.

Question 16

Which of the following best describes the function of the plasma membrane?

Accepted Answer

It controls the movement of substances into and out of the cell.

Question 17

Which of the following is a function of the endoplasmic reticulum?

Accepted Answer

Protein and lipid synthesis

Question 18

Which of the following best describes the process of cellular differentiation?

Accepted Answer

Cells change from one type to another to perform specialized functions.

Question 19

Which of the following is a correct description of the sodium-potassium pump?

Accepted Answer

It moves sodium ions out of the cell and potassium ions into the cell using ATP.

Question 20

Which of the following is the correct sequence of events in mitosis?

Accepted Answer

Prophase, Metaphase, Anaphase, Telophase

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

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