Membrane Proteins

Question 1

Integral proteins are

Answer 1

Integrated throughout the protein

Question 2

What are examples of Integral proteins?

Answer 2

• Channel Proteins

- Carrier Proteins

Question 3

Channel proteins are integral proteins ones that go

Answer 3

Down the concentration gradient

Question 4

Carrier proteins are integral proteins ones that go

Answer 4

Against the concentration gradient

Question 5

Peripheral proteins are ones which

Answer 5

Rest on top of the membrane / can rest on integral

Question 6

Peripheral proteins are capable of

Answer 6

Attaching and removing themselves

Question 7

Lipid-bound proteins are very rare and can be found

Answer 7

In the middle of the bilayer

Question 8

What are Glycoproteins?

Answer 8

Chain of sugars attached to proteins used in signaling

Question 9

Which proteins are able to transport molecules much more quickly?

Answer 9

Channel proteins are faster than carrier proteins

Question 10

Why are carrier proteins slower at transporting molecules?

Answer 10

They must change shape and “reset” each time they move a molecule

Question 11

Ions like Na+, K+ and Ca2+ must be transported via

Answer 11

Active transport

Question 12

What are aquaproteins?

Answer 12

Channel proteins that allow water to seep through

Question 13

Endocytosis is a form of

Answer 13

Active transport

Question 14

What kind of proteins are carrier proteins?

Answer 14

Gated trans-membrane proteins whose gates are activated due to concentration gradient

Question 15

The hydrophilic region of the cell membrane consists of

Answer 15

Phosphates

Question 16

Saturated fats have what kind of structure?

Answer 16

Straight (alkanes)

Question 17

What happens if the cell membrane has many saturated fats?

Answer 17

It becomes tighter due to dense packing

Question 18

Increased amounts of unsaturated fatty acids in the plasma membrane allow for

Answer 18

It to become less tighter