Diffusion And Osmosis

Question 1

What is osmosis?

Answer 1

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Question 2

Does Diffusion require n energy input

Answer 2

No Diffusion is a passive process that does not require energy.

Question 3

What is dupiffusion

Answer 3

The process by which molecules spread from areas of high concentration to areas of low concentration

Question 4

What is active transport?

Answer 4

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy in the form of ATP.

Question 5

Which of the following is an example of passive transport: a) Osmosis b) Active transport c) Endocytosis?

Answer 5

a) Osmosis is a passive process, that does not require ATP energy. The water molecules have there own kinetic energy

Question 6

What type of molecules typically use osmosis to move across membranes?

Answer 6

Water molecules.

Question 7

What is the primary difference between diffusion and osmosis?

Answer 7

The primary difference is that osmosis specifically refers to the movement of water, while diffusion can involve any type of molecule.

Question 8

What is actove transport

Answer 8

Active transport is a process that is required to move molecules against a concentration gradient from a low to high

Question 9

What role do transport carrier proteins play in active transport?

Answer 9

Carrier proteins transport in the membrane transport substances

Question 10

What is equilibrium in the context of diffusion?

Answer 10

When there is no net movement of molecules.

Question 11

What is pasive transport

Answer 11

When molecules move from high to low

Question 12

Whats a partially permeable memebrane

Answer 12

A partially permeable membrane allows water and other small molecules to pass through, but not larger molecules such as starch.

Question 13

3 examples of osmosis

Answer 13

Intestine
Roots in soil
Water being absorbed into red blood cells

Question 14

How does concetration gradient effect diffusion

Answer 14

If there is a steeper concentration gradient there will be much more frequent collisions due to the high density of particles, if there is less concentration there will be much less collisions as there wont be as much particles colliding together

Question 15

How dies distance effect diffusion

Answer 15

The rate of diffusion is fastest when the distance the particles have to travel is shorter

Question 16

How to calculate percentage chngw in mass

Answer 16

(Final mass - intiial mass )/ initiak mass) x 100

Question 17

Describe what happens to. More dilute solution in osmosis

Answer 17

Water enters through osmosis across a PPM. Causing the cell to swell hp and burst. CALLED LYSIS

Question 18

What happens in osmosis qhen the more concentrated solution is outside the cell

Answer 18

Water exists across the PPM causing the cell to shrink and shrivel up. CALLED CRENATION

Question 19

what happens to a more dilute solution in osmosis for plants

Answer 19

Cell wont burst because of cellw all CALLED TURGID

Question 20

What happens to a plant cell to a more concentrated solutioon outside

Answer 20

Cell memebrane pulls away from the cell wall CALLED PLASMOLYSIS