IGCSE movement of molecules

Question 1

When a plant cell loses a little water, it will become...

Accepted Answer

flaccid

Question 2

Which type of movement of molecules requires energy from respiration?

Accepted Answer

Active transport

Question 3

Higher temperatures cause the rate of diffusion to...

Accepted Answer

increase

Question 4

The plant cell's cellulose cell wall is...

Accepted Answer

fully permeable

Question 5

A larger surface area to volume ratio causes the rate of diffusion to...

Accepted Answer

increase

Question 6

When a plant cell is placed in a dilute solution, it will become...

Accepted Answer

turgid

Question 7

Net movement of particles from a region of high concentration to a region of low concentration

Accepted Answer

Diffusion

Question 8

Which type(s) of movement is passive and relies purely on kinetic energy of molecules?

Accepted Answer

Osmosis, Diffusion

Question 9

A cell membrane, permeable to water but not to some solutes, is known as...

Accepted Answer

selectively permeable, partially permeable

Question 10

A shallow/smaller concentration gradient will cause the rate of diffusion to...

Accepted Answer

decrease

Question 11

Which types of movement move molecules down their concentration gradient?

Accepted Answer

Diffusion, Facilitated diffusion, Osmosis

Question 12

Water moves from cell to cell by...

Accepted Answer

osmosis

Question 13

The difference in concentration between two areas is called a...

Accepted Answer

concentration gradient

Question 14

When a plant cell loses an excessive amount of water, it will become...

Accepted Answer

plasmolysed

Question 15

In osmosis, water moves from a dilute solution to an area of...

Accepted Answer

low water potential, concentrated solution

Questions 15