Bio final Kaplan slides 8 (LO 9)

Question 1

Photosynthesis equation

Answer 1

Carbon dioxide + water = sugar + oxygen

Question 2

How do cells capture light energy

Answer 2

-Electromagnetic radiation has electrical and magnetic properties
-Waves have energy

Question 3

Receptor molecules

Answer 3

-Absorb photons in order to harvest their energy
-When photon meets molecule, jumps to excited state

Question 4

Pigments

Answer 4

-Molecules only absorb light in visible spectrum
-Chlorphyll: main pigment that captures sunlight
-Accessory pigments: absorb light chlorophyll cant + extra light

Question 5

Photosystem II

Answer 5

-Thylakoid membrane

-Chlorophyll unstable, loses e
-Water donates more e
-e sent to ETC
-H+ makes gradient
-ATP synthase

-ATP product
-Oxygen waste product

Question 6

Photosystem I

Answer 6

-Thylakoid membrane

-Chlorophyll unstable, loses e
-e goes through ETC
-Reaches photosystem I
-Absorbs light and releases new e
-NADP+ accepts electron to produce NADPH

-NADPH product

Question 7

Cyclic

Answer 7

-e does not get donated to NADP+
-Re enters photosystem I
-Used if need more ATP instead of NADPH

Question 8

Non cyclic

Answer 8

-Main pathway
-Converts NADP+ into NADPH

Question 9

3 processes in the Calvin cycle

Answer 9

-FIxation of CO2
-Reduction: ATP and NADPH used to make G3P
-Regeneration of the CO2 receptor RuBP