Photosynthesis

Question 1

What is the purpose of photosynthesis?

Answer 1

To make glucose for respiration so the plant can produce energy (ATP) for active processes.

Question 2

What is the word equation for photosynthesis?

Answer 2

Carbon dioxide + water —(light + chlorophyll)—> glucose + oxygen

Question 3

What happens in the light-dependent stage of photosynthesis?

Answer 3

Water is split into hydrogen and oxygen using light energy in the thylakoids.

Question 4

What happens to oxygen made in the light-dependent stage?

Answer 4

It diffuses out of the stomata because it’s not used in the next stage.

Question 7

3. Q: What happens in the light-dependent stage of photosynthesis?

Question 8

A: Water is split into hydrogen and oxygen using light energy in the thylakoids.

Question 10

4. Q: What happens to oxygen made in the light-dependent stage?

Question 11

A: It diffuses out of the stomata because it’s not used in the next stage.

Question 13

5. Q: What happens in the light-independent stage of photosynthesis?

Question 14

A: Hydrogen and carbon dioxide are used to make glucose in the stroma.

Question 16

6. Q: What happens to the glucose made in photosynthesis?

Question 17

A: It’s used in respiration to produce energy (ATP) for the plant’s life processes.

Question 19

7. Q: What are enzymes?

Question 20

A: Proteins that act as catalysts to speed up reactions by lowering activation energy.

Question 22

8. Q: What happens to enzymes at low temperatures?

Question 23

A: They move slowly with less kinetic energy

Answer 23

so reactions slow down.

Question 25

9. Q: What happens to enzymes at optimum temperature?

Question 26

A: They work fast and efficiently to catalyse reactions and help the cell function.

Question 28

10. Q: What happens to enzymes if the temperature is too high?

Question 29

A: They denature and can’t bind to the substrate

Answer 29

stopping reactions.

Question 31

11. Q: What is passive transport?

Question 32

A: The movement of substances from high to low concentration without energy (ATP).

Question 34

What is diffusion?

Question 35

Movement of particles from high to low concentration without energy (ATP).

Question 37

What is osmosis?

Question 38

Movement of water through a semi-permeable membrane from high to low concentration.

Question 39

Give two examples of passive transport in the harakeke plant.

Question 40

Carbon dioxide diffusing into leaves and water entering roots by osmosis.

Question 42

What is active transport?

Question 43

Movement of substances from low to high concentration using energy (ATP).

Question 45

How does the harakeke plant use active transport?

Question 46

It moves minerals from soil into roots against the concentration gradient.

Question 48

Why does the harakeke plant use both types of transport?

Question 49

Because it grows in different environments (damp

Answer 49

beach