photosynthesis

Question 1

photosynthesis

Answer 1

process when light energy is trapped and used to build organic molecules.

Question 2

what happens in photosynthesis?

Answer 2

light energy is transformed into chemical energy

Question 3

chloroplasts

Answer 3

• mainly located in the leaves
• contain chlorophyll
• chlorophyll traps light energy

Question 4

chlorophyll

Answer 4

a pigment-protein which is embedded in the thylakoid membranes of the grana

Question 5

where does stage 1 (splitting water) occur?

Answer 5

chloroplast- specifically inside the thylakoid membrane in a granum

Question 6

what does stage 1 (splitting water) need?

Answer 6

• light
• the chlorophyll molecules absorb the light and transform this into chemical energy (light-dependent stage)

Question 7

what happens in stage 1 (water splitting)?

Answer 7

• the water molecule is split
• H2O is split into oxygen and high-energy ions and electrons
• H+ are picked up by a coenzyme called NADP+ and becomes NADPH and are carried to the next stage
• excited electrons are used to make 18 ATP which are also moved to the next stage

Question 8

light dependent stage inputs

Answer 8

• light
• water
  -NADP+
• ADP