Chapter 4: Cell Processes- Movement Of Materials

Question 1

Name 3 examples of passive transport

Answer 1

Diffusion
Facilitated diffusion
Osmosis

Question 2

What is active transport?

Answer 2

Process that needs energy

Question 3

Name 3 examples of active transport

Answer 3

Cytosis
Endocytosis
Exocytosis

Question 4

What is diffusion

Answer 4

Random movement of molecules from areas of high concentration to low concentration

Question 5

What is the concentration gradient?

Answer 5

The difference in concentration between two areas

Question 6

How does the concentration gradient affect the rate of diffusion.

Answer 6

The higher the concentration gradient the faster the rate of diffusion

Question 7

How does size affect diffusion

Answer 7

Small particles diffuse faster than large particles

Question 8

How does temperature affect diffusion

Answer 8

The higher the temperature the faster particles diffuse

Question 9

How does the state of particles affect diffusion?

Answer 9

Gas particles diffuse faster than particles in liquid

Question 10

What is facilitated diffusion?

Answer 10

Facilitated diffusion is when molecules are transported across the membrane using special transport or carrier proteins.

Question 11

True or false: carrier proteins can carry any type of molecules

Answer 11

False, carrier proteins are specific meaning they can only carry one type of molecule

Question 12

What is osmosis?

Answer 12

Osmosis is the movement of water from a semipermeable membrane from an area of high water potential to an area of low water potential until both water potentials are equal

Question 13

What is high potential water?

Answer 13

Water that has few particles dissolved in it

Question 14

Water is low water potential?

Answer 14

Water that has many particles dissolved in it

Question 15

Name an example of high water potential

Answer 15

Freshwater/tap water

Question 16

Name an example of low water potential

Answer 16

Sea water/marine water

Question 17

What is a hypertonic solution?

Answer 17

A weak or dilute solution

Question 18

What is a hypertonic solution?

Answer 18

A strong or concentrated solution

Question 19

What is an isotonic solution?

Answer 19

Two solutions with the same concentration

Question 20

What is cytosine

Answer 20

Movement of large amounts of substances into/out of cells by the folding of membranes

Question 21

What is Endocytosis?

Answer 21

This is the taking out of substances into the cell by the I folding of the cell membrane

Question 22

What is Pinocytosis

Answer 22

When fluids are taken in (cell drinking)

Question 23

What is phagocytosis?

Answer 23

Large particles are taken in by phagocytosis (cell eating)

Question 24

What is exocytosis?

Answer 24

Removal of substances from the cell. The reverse of Endocytosis

Question 25

What is passive transport?

Answer 25

Process that does not use energy because substances move with the gradient