Download Answer: d - Castle High School

The end products of the light dependent
reactions of photosynthesis are
a. ADP, H2O, NADPH
b. ADP, PGAL, RuBP (RuDP)
c. ATP, CO2, H2O
d. ATP, NADPH, O2
e. CO2, H+, PGAL
Answer: d
The function of water in photosynthesis
is to
a. combine with CO2
b. absorb light energy
c. supply electrons in the light-dependent
reactions
d. Transport H+ ions in the light-independent
(dark) reactions
e. Provide O2 for the light-independent
reactions
Answer: c
When hydrogen ions are pumped out of the
chloroplast stroma, across the thylakoid
membrane, and into the thylakoid space, the
result is
a. damage to the chloroplast.
b. the reduction of NAD
c. the restoration of the Na-K balance across the
membrane.
d. the creation of a proton gradient.
e. the lowering of pH in the chloroplast stroma.
Answer: d
Which of the following processes is carried
out more efficiently by a C4 plant than by
a C3 plant?
a. Light absorption
b. Chemiosmotic coupling
c. Photolysis
d. Fixation of CO2
e. Transport of sugars
Answer: d
Needed: Light Photons
(discrete packets of energy)
Energy
High energy photons (UV and above)
cause cellular damage by denaturing
organic molecules
Only ~ 42% of solar radiation
Makes it to the surface
Needed: Chlorophyll
(blue green in color)
(yellow green in color)
Also present: Carotenoids
(chlorophyll
In membranes)
Thylakoid space
Stroma
Comparison of
chemiosmosis in
mitochondria and
chloroplasts
Mitochondria
Chloroplast
Electron source
Chemical energy
from food molecules
Light energy from
photons
Site of hydrogen
reservoir
Intermembrane
space
Thylakoid lumen
Site of ATP
synthesis
Mitochondrial matrix Chloroplast stroma
Comparison of
chemiosmosis in
mitochondria and
chloroplasts
Campbell; Fig. 10.15
(PGA)
(PGAP)
(PGAL)
(PGAL)
The function of water in photosynthesis
is to
a. combine with CO2
b. absorb light energy
c. supply electrons in the light-dependent
reactions
d. Transport H+ ions in the light-independent
(dark) reactions
e. Provide O2 for the light-independent
reactions
Answer: c
The end products of the light dependent
reactions of photosynthesis are
a. ADP, H2O, NADPH
b. ADP, PGAL, RuBP (RuDP)
c. ATP, CO2, H2O
d. ATP, NADPH, O2
e. CO2, H+, PGAL
Answer: d
Which of the following processes is carried
out more efficiently by a C4 plant than by
a C3 plant?
a. Light absorption
b. Chemiosmotic coupling
c. Photolysis
d. Fixation of CO2
e. Transport of sugars
Answer: d
When hydrogen ions are pumped out of the
chloroplast stroma, across the thylakoid
membrane, and into the thylakoid space, the
result is
a. damage to the chloroplast.
b. the reduction of NAD
c. the restoration of the Na-K balance across the
membrane.
d. the creation of a proton gradient.
e. the lowering of pH in the chloroplast stroma.
Answer: d