Question

Which of the following statements is true for facilitated diffusion? A) it is slow, and uses a concentration gradient to move highly polar molecules and ions across membranes B) it uses proteins such as ion channels to move substances against their concentration gradient across a membrane C) it involves the movement of molecules against a concentration gradient across a membrane D) it speeds up the favorable movement of substances across a membrane E) none of the above

          Which of the following statements is true for facilitated diffusion?

A) it is slow, and uses a concentration gradient to move highly polar molecules and ions across membranes
B) it uses proteins such as ion channels to move substances against their concentration gradient across a membrane
C) it involves the movement of molecules against a concentration gradient across a membrane
D) it speeds up the favorable movement of substances across a membrane

E) none of the above

Which of the following statements is true for facilitated diffusion?

A) it is slow, and uses a concentration gradient to move highly polar molecules and ions across membranes
B) it uses proteins such as ion channels to move substances against their concentration gradient across a membrane
C) it involves the movement of molecules against a concentration gradient across a membrane
D) it speeds up the favorable movement of substances across a membrane

E) none of the above

Added by Michael J.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Marlyn Joyce

04/23/2022

Step 1

Step 1: Facilitated diffusion is a type of passive transport that does not require energy. Show more…

Show all steps

Thanks for your feedback!

Which of the following statements is true for facilitated diffusion? A) it is slow, and uses a concentration gradient to move highly polar molecules and ions across membranes B) it uses proteins such as ion channels to move substances against their concentration gradient across a membrane C) it involves the movement of molecules against a concentration gradient across a membrane D) it speeds up the favorable movement of substances across a membrane E) none of the above