B8 Photosynthesis

Question 1

word and symbol equation

Answer 1

carbon dioxide + water —> glucose + oxygen + (energy)

6CO2 + 6H2O
—> c6h1206 + 602

Question 2

limiting factors photosynthesis

Answer 2

light
temperature
CO2 concentration
amount of chlorophyll

Question 3

independent variable

Answer 3

distance from light source/light intensity

Question 4

dependant variable light intensuty practical

Answer 4

bubbles produced per minute

Question 5

control variables (photosynthesis practical)

Answer 5

temperature
sodium hydrogencarbonate concentration
pondweed used each time
light in room

Question 6

light intensity equation

Answer 6

1/ distance2

Question 7

uses of glucose

Answer 7

cellulose for cell wall
starch for storage (in cells of leaves)
producing amino acids
making lipids for energy store

Question 8

light graph

Answer 8

increases then flattens when something else becomes the limiting factor, no amount of increased light will increase photosynthesis

Question 9

temp graph

Answer 9

Increases and reaches a point where it rapidly decreases as the temp is too high the enzymes denature

Question 10

CO2 concentration graph

Answer 10

increases then flattens when something else becomes the limiting factor, no amount of increased co2 will increase photosynthesis