Q: Which equation best represents the hydrolysis of ATP during active transport?

$$\mathrm{ATP} \rightarrow \mathrm{ADP} + \mathrm{P_i} + \text{energy}$$

Question 1

Which component of the cell is primarily responsible for controlling the passage of substances between the intracellular and extracellular environments?

Accepted Answer

Plasma membrane

Question 2

A cell placed in a hypertonic solution will undergo which of the following changes?

Accepted Answer

It will lose water by osmosis and shrink.

Question 3

Which organelle is known as the 'powerhouse' of the cell and is responsible for most ATP production?

Accepted Answer

Mitochondrion

Question 4

What is the main function of the rough endoplasmic reticulum (RER)?

Accepted Answer

Protein folding and modification

Question 5

Which of the following best describes the structure of a phospholipid molecule in the plasma membrane?

Accepted Answer

Hydrophilic head and hydrophobic tails

Question 6

During facilitated diffusion, which type of molecule is most likely to cross the plasma membrane?

Accepted Answer

Large polar molecules like glucose

Question 7

Which equation best represents the hydrolysis of ATP during active transport?

Accepted Answer

$$\mathrm{ATP} ightarrow \mathrm{ADP} + \mathrm{P_i} + 	ext{energy}$$

Question 8

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

Accepted Answer

Synthesizing ATP

Question 9

A cell is placed in a 0.9% NaCl solution. What is the expected effect on the cell's volume?

Accepted Answer

The cell's volume will remain unchanged.

Question 10

Which process requires energy and moves solutes against their concentration gradient?

Accepted Answer

Active transport

Question 11

Which of the following best describes the function of the cytoskeleton?

Accepted Answer

Provides structural support and enables movement

Question 12

Which organelle is responsible for detoxification reactions and lipid synthesis?

Accepted Answer

Smooth endoplasmic reticulum

Question 13

What is the primary function of ribosomes?

Accepted Answer

Protein synthesis

Question 14

Which of the following statements about osmosis is correct?

Accepted Answer

Osmosis is the movement of solvent from low to high solute concentration.

Question 15

Which of the following is a function of the nucleus?

Accepted Answer

Controlling cellular functions by coding and creating proteins

Question 16

Which of the following best describes the difference between organic and inorganic molecules?

Accepted Answer

Organic molecules contain carbon and hydrogen, inorganic molecules do not.

Question 17

Which of the following is true about the sodium-potassium pump?

Accepted Answer

It moves three sodium ions out and two potassium ions in.

Question 18

Which process involves the cellular ingestion of droplets of extracellular fluid?

Accepted Answer

Pinocytosis

Question 19

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

Accepted Answer

S phase

Question 20

Which of the following is a correct description of the function of lysosomes?

Accepted Answer

Digests damaged organelles and cellular debris

The Cell: Structure, Function, and Membrane Transport

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