Unit 5

Question 1

Describe light dependent

Answer 1

Exited e- removed from chlorophyll

e moves along carriers releasing energy

Energy used to join ADP and pi to form ATP

photolysis of water produces protons, e and o2

NADP reduced by electrons

Question 2

Describe the calvin cycle

Answer 2

CO2 combines with RuBP using rubisco

produces 2 GP

GP reduced to TP

reduced using reduced NADP

using energy from ATP

TP converted to glucose, other biological molecule or regenerate RuBP

Question 3

why weedkiller cause plants to give off heat?

Answer 3

energy is released from high energy e

this energy which should be used to form ATP, cannot do this as the weedkiller blocks the ETC

Question 4

why does increased light intensity stimulate plant growth?

Answer 4

faster production of ATP and NADP

so faster light independent reaction

so produce ore sugars that can be used in respiration

have more energy for growth

faster synthesis of new organic materials