PHOTOSYNTHESIS

Question 1

where does photosynthesis occur inside the plant cell?

Answer 1

photosynthesis occurs inside the chloroplasts of plant cells

Question 2

what is needed for photosynthesis ?

Answer 2

light energy
water
carbon dioxide

Question 3

what are the products of photosynthesis?

Answer 3

glucose and oxygen

Question 4

what is photosynthesis?

Answer 4

Photosynthesis is the process plants undergo to convert carbon dioxide and
water, along with the help of light energy, into glucose and oxygen so the plant can carry out life processes.

Question 5

what is the word equation for photosynthesis?

Answer 5

water + carbon dioxide + light energy –> glucose + oxygen

Question 6

what is the symbol equation for photosynthesis?

Answer 6

H2O + CO2 + Light energy -> C6H12O6 + O2

Question 7

what are the two main stages of photosynthesis?

Answer 7

1. the light-dependent stage
2. the light-independent stage

Question 8

why do the light-dependent reactions require sunlight, and what time of day would these reactions occur?

Answer 8

in order to provide the energy to split water into hydrogen and oxygen, ready for the second stage. This will only happen during daylight

Question 9

what is the result of the light-dependent phase of photosynthesis?

Answer 9

produces hydrogen and oxygen

Question 10

what is the result of the light-independent phase?

Answer 10

produces glucose

Question 11

what is the internal structure of the chloroplast?

Answer 11

they have a smooth double membrane, inside are stacks of disks called thylakoids, the stacks being called grana. The liquid surrounding the thylakoids is the stroma.

Question 12

what are the features of the chloroplast that maximises the rate of photosynthesis?

Answer 12

two ways: the clear stroma lets more light reach the chlorophyll, and stacking thylakoid discs increases the surface area for better light absorption

Question 13

why is photosynthesis used by plants?

Answer 13

to convert light energy into chemical energy stored in glucose (food). Also producing oxygen which is essential to carry out life processes.

Question 14

what happens during light-dependent stage?

Answer 14

light-dependent stage: chlorophyll captures light energy in the thylakoid stacks to split water into hydrogen and oxygen.

Question 15

what happens during light-independent stage

Answer 15

these products (hydrogen and oxygen) are combined with carbon dioxide during the calvin cycle to make glucose