2.2 Kahoot - exam

Question 1

Diffusion is the movement of particles from a…

Answer 1

High concentration to low concentration

Question 2

Diffusion across a cell membrane does not require __?

Answer 2

Energy

Question 3

What types of molecules are able to cross the membrane easily via simple diffusion?

Answer 3

Small non-polar molecules

Question 4

How does temperature affect diffusion?

Answer 4

Hotter = faster diffusion

Question 5

What is osmosis?

Answer 5

The movement of water from high to low concentration

Question 6

If a cell is placed in a hypotonic solution, this means….?

Answer 6

the solution has LOWER concentration of dissolved solutes than the cell

Question 7

If a cell is placed in an ISOTONIC solution, this means….?

Answer 7

the solution has EQUAL concentration of dissolved solutes to the cell

Question 8

What kind of environment does a plant cell prefer?

Answer 8

hypotonic

Question 9

Facilitated diffusion requires:

Answer 9

a membrane embedded protein

Question 10

What is a channel protein?

Answer 10

opens and closes to let substances pass

Question 11

What is a carrier protein?

Answer 11

a carrier protein changes shape to help move the particles through

Question 12

Channel proteins allow…

Answer 12

small polar and charged molecules to cross

Question 13

Carrier proteins allow…

Answer 13

diffusion across the membranes of larger polar molecules

Question 14

channel proteins allow ions to move in & out of the cell faster than carrier proteins

Answer 14

true

Question 15

TRUE/FALSE: Carrier proteins require ATP to change shape.

Answer 15

False

Question 16

Active transport

Answer 16

• requires energy
• moves materials against a concentration gradient
• is usually done by transport proteins in the cell membrane

Question 17

What does ATP stand for?

Answer 17

Adenosine Tri Phosphate

Question 18

What type of reaction breaks off a phosphate group from ATP and releases energy?

Answer 18

hydrolysis reaction

Question 19

Primary active transport:

Answer 19

Can transport particles against their concentration gradient

Question 20

Secondary active transport

Answer 20

• moves a substance against its concentration gradient
• involves co- or counter-transport of 2 substances
• utilizes energy from a concentration gradient

Question 21

What is phosphorylation?

Answer 21

When a phosphate group is added to a molecule

Question 22

What does ATP do to the protein when it phosphorylates it?

Answer 22

it changes the protein’s shape

Question 23

Sodium-potassium ATPase (sodium-potassium pump) involves

Answer 23

ejecting 3 sodium ions from the cell in exchange for 2 potassium ions

Question 24

What do Symport proteins do in Active transport?

Answer 24

transport two different substance in one direction

Question 25

What do Antiport proteins do?

Answer 25

transport two different substance in opposite direction

Question 26

What type of transport protein is the sodium-potassium pump?

Answer 26

Antiport

Question 27

An electrochemical gradient is when

Answer 27

There is a difference in charge across a membrane due to ion transport

Question 28

Secondary active transporters uses...

Answer 28

energy stored in the electrochemical gradient of other solutes

Question 29

What is the movement of material out of the cell?

Answer 29

Exocytosis

Question 30

Phagocytosis is a type of...

Answer 30

Endocytosis

Question 31

Phagocytosis takes in....

Answer 31

larger particles

Question 32

Pinocytosis is also known as

Answer 32

cell drinking

Question 33

TRUE/FALSE: Pinocytosis and phagocytosis decrease the cell membrane surface area.

Answer 33

True

Question 34

Receptor-mediated endocytosis​

Answer 34

imports target molecules after they bind to membrane proteins.​

Question 35

TRUE/FALSE: The coated pit is the only place with receptor proteins

Answer 35

True

Question 36

Which of the following transport mechanisms require energy?

Answer 36

active transport & phagocytosis

Question 37

What type of transport allows large particles to enter the cell?

Answer 37

endocytosis

Question 38

What type of transport allows mature proteins to exit the cell?

Answer 38

Exocytosis

Question 39

What type of transport allows charged atoms to pass in the cell?

Answer 39

Channel protein

Question 40

What type of transport allows oxygen and carbon dioxide into/out of the cell?

Answer 40

simple diffusion