paper 2 specification 1

Question 1

what are photosynthetic organisms

Answer 1

-main producers of food
-things like algae and green plants use energy from the sun to make food (glucose)
-this store of glucose adds to its biomass

Question 2

where does photosynthesis occur

Answer 2

inside the chloroplasts-contain chlorophyll which absorbs light. Energy is then transferred to the chloroplasts by light

Question 3

what type of reaction is photosynthesis

Answer 3

endothermic as it absorbs energy (light energy to react with carbon dioxide and
water produces glucose and oxygen

Question 4

how does light become a limiting factor

Answer 4

light is directly proportional to the rate.
When you increase the level of light, plants will photosynthesize more. But, if you have too much light, then the other 2 ingredients become limiting and photosynthesis can no longer increase with the level of light.

Question 5

what could you measure the light intensity with

Answer 5

a light meter

Question 6

how is the rate of photosynthesis inversely proportional to the distance and light intensity

Answer 6

distance from lamp and light are inverse proportionate=if the distance increases, light intensity decreases

Question 7

what is the inverse square law

Answer 7

if you halve the distance, the light intensity will be four times greater.If you double the distance,the light will be four times smaller
1 divided by distance squared

Question 8

how can carbon be a limiting factor

Answer 8

if there is too little carbon it slows the rate down. Increasing Co2 increases the rate to a certain point. If you have too much CO2 then the other two factors become limiting as there isn’t enough

Question 9

how can temperature be a limiting factor

Answer 9

usually, if the temperature is too low the enzymes work more slowly.If its too much it will denature

Question 10

what is the balanced photosynthesis equation

Answer 10

6co+6h20–>C6h12o6+6o2