All practice papers

Question 1

What do ions or chloride ions do?

Answer 1

This decreases the water potential in an area where there is an increases of chloride ions in

Question 2

What happens if something blocks teh lungs

Answer 2

There will be a blockage of airways

Question 3

When you get a question takign about rate of transpiration what do you do/

Answer 3

Exaplin when it increases and why
Cohesion tension theory; Water moleucels poalr so cohesion is duet o hydrogen bonding between water moleucels wich incraeses teh tension in teh column of water therfore water trasnported up the xylem to the leaves

Question 4

What shoudl we say when we are critiosing a method?

Answer 4

Mention abitoic factors not controlled
Standarisation of experimetn for example time
Samplign area: Use more than one area

Question 5

What is oncotic pressure cause by

Answer 5

Plasma protein

Question 6

What is hydrostatic pressure caused by

Answer 6

The heart beatign

Question 7

What happens when you metnion about oxygen within organisms

Answer 7

Say that it can help for repsiration for muscel contraction

Question 8

Effect of volume of ethanol cncetration on beetroot

Answer 8

affect pigment concetration

Question 9

Explain why the boiling tubes were kept in a water bath.

Answer 9

Tempurature affects permeability

Tempurature affects pigment release

Question 10

Explain the effect of increasing ethanol concentration on membrane permeability.

Answer 10

Increases permebaility becuase it affects phopsholipids