Q: Which equation best represents the movement of water during osmosis?

$$\\text{Water moves from an area of low solute concentration to high solute concentration across a semipermeable membrane}$$

Question 1

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

Accepted Answer

A double layer of phospholipids with embedded proteins

Question 2

Which of the following is an example of passive membrane transport?

Accepted Answer

Facilitated diffusion

Question 3

A red blood cell placed in a hypertonic solution will:

Accepted Answer

Shrink due to water loss

Question 4

Which equation best represents the movement of water during osmosis?

Accepted Answer

$$\text{Water moves from an area of low solute concentration to high solute concentration across a semipermeable membrane}$$

Question 5

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

Accepted Answer

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

Question 6

Which of the following processes requires energy in the form of ATP?

Accepted Answer

Active transport

Question 7

Which of the following best explains why skeletal muscle cells have more mitochondria than skin cells?

Accepted Answer

Skeletal muscle cells require more energy for contraction

Question 8

Which of the following is NOT a function of the rough endoplasmic reticulum?

Accepted Answer

Lipid metabolism

Question 9

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

Accepted Answer

They digest cellular debris and foreign substances

Question 10

Which of the following statements about facilitated diffusion is correct?

Accepted Answer

It requires a transport protein to move substances down their concentration gradient

Question 11

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

Accepted Answer

It modifies, sorts, and packages proteins for secretion

Question 12

Which of the following is a correct sequence of events for the sodium-potassium pump?

Accepted Answer

Binding of sodium ions, phosphorylation by ATP, conformational change, release of sodium, binding of potassium, dephosphorylation, release of potassium

Question 13

Which of the following best describes the difference between endocytosis and exocytosis?

Accepted Answer

Endocytosis brings substances into the cell, exocytosis releases substances from the cell

Question 14

Which of the following is a function of peroxisomes?

Accepted Answer

Detoxification of harmful substances

Question 15

Which of the following best describes the role of aquaporins in the plasma membrane?

Accepted Answer

They facilitate the movement of water across the membrane

Question 16

Which of the following is true regarding isotonic solutions?

Accepted Answer

They have the same concentration of nonpenetrating solutes as the cell

Question 17

Which of the following best describes the function of ribosomes?

Accepted Answer

They synthesize proteins

Question 18

Which of the following is a characteristic of the nuclear envelope?

Accepted Answer

It contains nuclear pores for the passage of materials

Question 19

Which of the following best describes the process of phagocytosis?

Accepted Answer

The cell engulfs large particles or bacteria

Question 20

Which of the following best explains why the plasma membrane is described as a 'fluid mosaic'?

Accepted Answer

It is composed of a flexible bilayer of phospholipids with proteins embedded throughout

A&P Chapter 3 Practice Questions

Guida di studio - Domande di pratica

Study guide - Flashcard