Simple And Facilitated Diffusion, Transport

Question 1

Simple Diffusion

Answer 1

If the PM is permeable to a particular molecule and there is a difference in concentration of that molecule across the membrane, then the molecule still diffuse across the membrane with simple diffusion

Question 2

Are energy and transport proteins required in simple diffusion?

Answer 2

No

Question 3

Facilitated diffusion

Answer 3

The diffusion of molecules that can’t cross the membrane in their own

Question 4

What are transport proteins?

Answer 4

Integral membrane proteins

Question 5

What are the two types of transport proteins?

Answer 5

Channel and carrier

Question 6

How can cells regulate FD?

Answer 6

Regulating the presence or absence of particular molecule and activity or particular transport protein

Question 7

Channel can be always ______ or _______.

Answer 7

Opened, gated

Question 8

Do channel proteins require energy?

Answer 8

No

Question 9

What does the movement depended on?

Answer 9

Concentration

Question 10

What are the 3 basic types of CP?

Answer 10

Uniporter, symporters, and antiporters

Question 11

Uniporters

Answer 11

CPs that only transport one type of molecule

Question 12

Symporters

Answer 12

CPs that transport two types of molecules in the same direction and time

Question 13

Antiporters

Answer 13

CPs that transport two types of molecules in opposite directions at the same time

Question 14

Channel proteins display ______ kinetics.

Answer 14

Linear

Question 15

Carrier proteins display ________ kinetics.

Answer 15

Saturation

Question 16

What is active transport used for?

Answer 16

Build up a concentration gradient of a molecule across a plasma membrane

Question 17

What are concentration gradients critical for?

Answer 17

Biological processes

Question 18

What does moving molecules against a concentration gradient require?

Answer 18

Carrier proteins and energy input from cell