Lecture 10

Question 1

What type of channels are there?

Answer 1

Open and Gated

Question 2

What do gated channels open to?

Answer 2

Chemical or electrical signals

Question 3

What type of transport are channels?

Answer 3

Facilitated transport
* Proteins required to transport with the concentration gradient

Question 4

What type of proteins are involved in channels?

Answer 4

Integral membrane proteins

Question 5

What are transporters?

Answer 5

Transporters are like channels that are closed and open when they bind to the things that it wants to transport (ligand binding)

Question 6

What type of transporters are there?

Answer 6

1. Uniporter
2. Symporter
3. Antiporter

Question 7

Uniporter

Answer 7

One molecule with the concentration gradient

Question 8

Symporter

Answer 8

Both molecules going in same direction
* One against concentration gradient
* One with concentration gradient

Question 9

Antiporter

Answer 9

Both molecules going in opposite directions
* One against concentration gradient
* One with concentration gradient

Question 10

What does active transport use?

Answer 10

ATP

Question 11

True or False:

Active transport transports against the concentration gradient (from low to high)

Answer 11

True

Question 12

How is active transport classified?

Answer 12

1. Subunit composition
2. Molecules transported
3. Mechanism of action

Question 13

What classes of ATP pumps are there?

Answer 13

1. V class
2. F class
3. ABC-type
4. P class