photosynthesis

Question 1

where does light dependant reactions occur?

Answer 1

= thylakoid membrane
= or grana
=

Question 2

What is produced in the light dependant reaction that is needed for the light independant reaction?

Answer 2

= ATP
= reduced NADPH
= light energy and water is needed

Question 3

What is the photoionisation of chlorophyll?

Answer 3

= light energy is absorbed by chlorophyll
= electrons become excited and raises up an higher energy level and leaves chlorophyll
= chlorophyll has ionised (looses electrons)
= some of the energy from the electrons released, makes ATP and reduced NADP -

Question 4

What is the photolysis of watr?

Answer 4

= light energy is absorbed by chlorophyll and and splits water into H+ ions and electrons and oxygen
= H+ ions are picked up by NADP- used in LDR
= electrons are passed down electron transport chain of protein carriers
= oxygen is used in respiration- waste product, or diffuses out of leaf

Question 5

What happens in chemiosmosis theory?

Answer 5

= electrons that gained elecrtorns are picked into proteins that are embedded in chloroplast membrane, move along proteins carrier, reduce in energy, so energy is released
= energy is used to pump protons across the membrane, protons in the stroma uses energy to activley treansport across membrane into thylakoids lumen
= this creates a protein gradient, protons pass through ATP synthase which results to ATP being produced

Question 7

How is reduced NADP created?

Answer 7

= protons moving down the cpncentration gradient, some are recycled pumped again, and some are picked up by coenzyme and becomes reduced