Question 1

Which of the following best describes the difference between facilitated diffusion and active transport as shown in the images?

Accepted Answer

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

Question 2

In the context of the fluid mosaic model, which component is responsible for the selective permeability of the plasma membrane?

Accepted Answer

Phospholipid bilayer with embedded proteins

Question 3

Refer to the diagram of facilitated diffusion. Which type of protein is responsible for the selective passage of ions across the membrane?

Accepted Answer

Channel protein

Question 4

Which of the following statements about active transport is correct based on the image?

Accepted Answer

Active transport requires ATP to move molecules against their concentration gradient.

Question 5

A cell is placed in a hypertonic solution. According to the principles of osmosis, what will happen to the cell?

Accepted Answer

Water will leave the cell, causing it to shrink.

Question 6

Which organelle is primarily responsible for the synthesis of proteins, as shown in the cell component chart?

Accepted Answer

Ribosome

Question 7

Which process is depicted in the signal transduction pathway image, and what is its main outcome?

Accepted Answer

Reception, transduction, and response; the main outcome is activation of a cellular response.

Question 8

Which of the following best explains why facilitated diffusion does not require energy input?

Accepted Answer

It moves molecules down their concentration gradient.

Question 9

Which of the following is a function of the Golgi apparatus as shown in the cell component chart?

Accepted Answer

Modification, sorting, and packaging of proteins and lipids

Question 10

In the context of cell signaling, what is the role of a receptor protein as shown in the signal transduction pathway?

Accepted Answer

To bind signaling molecules and initiate a cellular response

Question 11

Which of the following best describes the role of ATP in active transport, as shown in the image?

Accepted Answer

ATP provides energy to move molecules against their concentration gradient.

Question 12

Which of the following is true about carrier proteins in facilitated diffusion?

Accepted Answer

They change shape to move molecules across the membrane.

Question 13

Which cell structure is responsible for digesting macromolecules, as shown in the cell component chart?

Accepted Answer

Lysosome

Question 14

What is the main function of the mitochondrion as described in the cell component chart?

Accepted Answer

ATP production through cellular respiration

Question 15

Which of the following best describes the sequence of events in a typical signal transduction pathway?

Accepted Answer

Reception → Transduction → Response

Cell Structure, Membrane Transport, and Cell Signaling: Study Notes for General Biology

Guida di studio - Domande di pratica

Study guide - Flashcard