Question

question 28
what is the difference between simple diffusion and facilitated diffusion through a cell membrane?

• facilitated diffusion uses carrier proteins, simple diffusion does not
• facilitated diffusion uses energy, simple diffusion does not
• facilitated diffusion uses vacuoles, simple diffusion does not
• simple diffusion uses carrier proteins, facilitated diffusion does not

question 29
__ transport does not require energy and moves materials from concentration to __ concentration through the cell membrane.

• passive, high, low
• active, high, low
• alternate, high, low
• passive, low, high

Explanation:

Analyze Question 28

Using the Passive Transport knowledge point, we compare simple and facilitated diffusion. Both are passive processes that move substances down their concentration gradient without energy. However, simple diffusion allows small, nonpolar molecules to pass directly through the lipid bilayer, whereas facilitated diffusion requires specialized membrane proteins (such as channel or carrier proteins) to help polar or charged substances cross. Therefore, facilitated diffusion uses carrier proteins, while simple diffusion does not.

Analyze Question 29

Using the Passive Transport knowledge point, we identify the type of transport that does not require energy. Transport that does not require cellular energy (ATP) is classified as passive transport. During passive transport, substances naturally move down their concentration gradient, which means they move from an area of high concentration to an area of low concentration. Thus, the correct sequence to fill in the blanks is "Passive, high, low".

Answer:

Question 28

• (A) facilitated diffusion uses carrier proteins, simple diffusion does not (Correct answer)
• (B) facilitated diffusion uses energy, simple diffusion does not
• (C) facilitated diffusion uses vacuoles, simple diffusion does not
• (D) simple uses carrier proteins, facilitated diffusion does not

Question 29

• (A) Passive, high, low (Correct answer)
• (B) Active, high, low
• (C) Alternate, high, low
• (D) Passive, low, high