Photosynthesis

Question 1

Photosynthesis

Answer 1

The process at which plants make food (glucose) from water and carbon dioxide and sunlight

Question 2

Photosynthesis balanced equation

Answer 2

6CO3 + 6H20———-C6H12O6 + O6

Question 3

Adaptations for photosynthesis for leaf

Answer 3

Thin (fast gas exchange)
Stomata (gas exchange)
Large surface area (more sunlight)

Question 4

Where does the light stage take place?

Answer 4

Grana

Question 5

Where does the dark stage take place?

Answer 5

Stomata

Question 6

Light stage (cyclic)

Answer 6

Energy is absorbed by chlorophyll
Energised e- are emitted
E- are picked up by carriers in election transport system
E- return back into chlorophyll

Question 7

Light stage (non cyclic) hint:involves H20

Answer 7

Energy is absorbed by chlorophyll
Electrons are emitted and will help to form NADPH

H2O will split into H+ , oxygen + electrons (photolysis)
Electrons will pass through spilt water and into chlorophyll
Some electrons will react with ADP+P to give ATP

Question 8

Products of light stage (think about non cyclic)

Answer 8

NADPH-used in dark
OXYGEN- respiration
ATP- energy used in dark

Question 9

Dark stage

Answer 9

NADPH emits protons and electrons
Co2 and protons and electrons combined to give glucose
Energy is supplied from ATP becalming ADP
NADPH+ and ADP is reused in light stage

Question 10

Where does glucose go after?

Answer 10

Can be used for respiration (monosaccharide 1 sugar unit)

Can be used as starch (polysaccharide many sugar units)

Can be used to make cellulose (polysaccharide)

Converted into sucrose (disaccharide 2)

Question 11

Factors affecting rate of photosynthesis

Answer 11

Temp (trap sun heat)

Available CO2 (pump more)

Light intensity ( artificial light)

Question 12

What is used in the experiment for CO2

Answer 12

Baking powder

Question 13

What plant is used in the experiment?

Answer 13

Pondweed

Question 14

What is used to keep optimum temp in the experiment?

Answer 14

Water bath