WorksheetsAP Biology Photosynthesis-Light Reactions only
Total questions: 20
Worksheet time: 26mins
Plants use the following reactants for the light reaction
Water and CO2
Water and NADPH
Water and NADP+
NADPH and ATP
If the proton (H+) pump in the thylakoid was not working which molecule could not be made during the light reaction?
NADPH
ATP
Water
Oxygen gas
The NADP+ is
oxidized during the light reaction
reduced during the light reaction
oxidized during the Calvin cycle
reduced during the Calvin cycle
Which of the following would have the least affect on photosynthetic rate?
increase the temp from 20 C to 30 C
increasing the CO2 from 400 ppm to 600ppm
increasing the light intesity from 40 Watts to 60 Watts
increasing the amount of O2 from 20% to 30% in the air
Plants obtain CO2 into the chloroplast by
active transport
diffusion
facilitated diffusion
endocytosis
Photosystems are made of
chloroplasts
chromosomes
chlorophyll
cytoplasm
ATP is made during the light reaction using all of the following EXCEPT
proton pump
hydrogen ion gradient
electron energy from photosystem II
NADPH donating electrons
Which plant would have the most oxygen produced in 1 hour?
plant given red light only
plant given blue light only
plant given white light
plant given green light only
The light dependent reactions of photosynthesis occur in the _____.
thylakoid membrane
grana
stroma
mesophyll
These leaf structures regulate gas flow in and out of a plant.
petioles
palisade layer
cuticle
stomata
Photosynthesis goal is to
convert light energy into glucose energy
use light energy to make oxygen gas
convert sugar energy into ATP
convert sugar energy into oxygen gas
