Facilitative Diffusion

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created 6 years ago by agillis1
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Campbell Biology
Chapter 7
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College: First year
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1

Transport proteins speed the passive movement of molecules across the plasma membrane in?

facilitated diffusion

2

Provide corridors that allow a specific molecule or ion to cross the membrane

channel proteins

3

Channel proteins include?

Aquaporins- for facilitated diffusion of water
Ion channels- that open or close in response to a stimulus

4

Carrier proteins undergo a subtle change in what?

shape that trans locates the solute binding site across the membrane

5

Kidney disease cystinuria

a disease cause my a malfunction in specific transport systems

6

Active transport uses energy against what?

The gradient

7

the solute moves down its concentration gradient and the transport requires no energy, therefore...

facilitative diffusion is still passive

8

Some transport proteins can move solutes against there?

concentration gradients

9

Moves substance against there concentration gradient

active transport

10

requires energy usually in the form of ATP

active transport

11

active transport Is performed by

Specific proteins embedded in the membranes

12

Active transports allows cells to maintain concentration gradients that

differ from their surroundings

13

what is an example of an active transport

sodium potassium pump