Transport Across Cells

Question 1

State two examples of osmosis in living things

Answer 1

1. The absorption of water in the soil is due to osmosis. The soil has a higher concentration of water than in the roots.
2. The cells of the human body absorbs water from the intestine by osmosis.

Question 2

How is diffusion important to living things?

Answer 2

It allows them to gain substances they require to obtain energy to help them grow and to get rid of waste

Question 3

Two examples of diffusion in living things

Answer 3

1. Respiration: It helps in gaseous exchange during respiration. oxygen moves through organisms then into the blood then into the cell.
2. Photosynthesis: carbon dioxide from the stomata diffuses into the leaves then into the cells.

Question 4

What is diffusion?

Answer 4

Diffusion is the movement of net particles going from a high concentration to a Low concentration down a concentration gradient until the particles are evenly distributed.

Question 5

What type of process is diffusion and does it need energy to take place?

Answer 5

It’s a passive process and it doesn’t need energy to take place

Question 6

Does diffusion need a differentially permeable membrane?

Answer 6

It can occur with or without it.

Question 7

Where can diffusion take place?

Answer 7

In gas, liquids and solutions

Question 8

Osmosis

Answer 8

It’s a type of diffusion
It doesn’t require energy
It involves the movement of water molecules

Question 9

What is osmosis?

Answer 9

It’s the movement of water molecules through a differentially permeable membrane from a solution containing a lot of water molecules to a solution containing fewer water molecules

Question 10

What is another word for hypotonic solution?

Answer 10

Dilute Solution

Question 11

What is another word for hypertonic solution?

Answer 11

concentrated solution

Question 12

What happens when a hypotonic solution takes place in a plant cell?

Answer 12

It becomes turgid and the cell wall prevents it from bursting

Question 13

What happens when a hyportonic solution takes place in an animal cell?

Answer 13

The cell becomes turgid and burst because there is no cell wall

Question 14

What is the solute and solvent?

Answer 14

The solute is what is being dissolved and the solvent is what the solute dissolved in

Question 15

What happens when a hypertonic solution takes place in a plant cell?

Answer 15

cell become flaccid then plasmolyzed

Question 16

Compare diffusion and osmosis

Answer 16

Diffusion doesnt need a partially permeable memba while osmosis does.
They both dont need energy to happen
Diffusion happens all around us while osmosis can only happen in water.