BIL150 MALLERY FINAL EXAM STUDY
EXAMS 4
Which of the following sequences is the closest representation of the flow ofelectrons
during green plant photosynthesis?
NADPH --> an ETC --> O2
NADPH --> O2 --> CO2 --> an ETC
H2O --> photosysyem II --> an ETC --> photosystem I --> NADPH
NADPH --> chlorohyll-P680 --> Calvin Cycle
Photosysten I --> photosystem II --> H2O - Correct Answers -H2O --> photosysyem II --
> an ETC --> photosystem I --> NADPH
a particular cell has twice the amount of DNA as that in the diploid amount for this
species. This particular cell is most likely?
in G2 of interphase
in G1 of interphase
just before entering the S phase
at the end of cytokensis
in a stage of meiosis when the cells are not able to divide at all - Correct Answers -in G2
interphase
Compared to C3 plants, C4 plants?
reduce the efficiency of photosynthesis by 50%
do not use Rubisco for CO2 reduction
can continue to reduce CO2 even at very low CO2 concentrations and high O2 levels
make a 4-carbon acid, oxaloacetate, which is then delivered to the Krebs cycle in
mitochondria
, have higher rates of photorespiration - Correct Answers -can continue to reduce CO2
even at very low CO2 concentrations and high O2 levels
A gradute student doing photosynthetic research measures the amounts of ATP and
NADPH in Calvin cycle plants in a one hour period and finds that 30,000 molecules of
ATP were consumed, but only 20,000 molecules of NADPH were consumed. Confused
he asks his mentor where did the additional ATP molecules, compared to the NADPH
amount come from. The mentor says they likely came from?
photosystem II directly
hydrolysis of water by oxygenase
non-cyclic electron flow in Photosystem II
substrate level phosphorylation
cyclic electron flow in photosystem I - Correct Answers -cyclic electron flow in
photosystem I
In thylakoid membranes of green plants, what is the main role of the antenna chlorophyll
pigment molecules?
to split water and release oxygen to the reactions center chlorophyll-P700
to synthesize ATP from ADP and Pi
to harvest photons and transfer light energy to the reaction center chlorophyll-P680
to transfer electrons to ferredoxin and then NADPH
to concentrate photons within the stroma (chloroplasm) - Correct Answers -to harvest
photons and transfer light energy to the reaction center chlorophyll-P680
the decrease in the amount of MPF activity at the end of mitosis is due to?
he degradation of cyclin
the destruction of the protein kinase CdK (cyclin dependent kinase)
synthesis of DNA
the accumulation of cyclin
decreased synthesis of CdK (cyclin dependent kinase) - Correct Answers -the
degradation of cyclin
EXAMS 4
Which of the following sequences is the closest representation of the flow ofelectrons
during green plant photosynthesis?
NADPH --> an ETC --> O2
NADPH --> O2 --> CO2 --> an ETC
H2O --> photosysyem II --> an ETC --> photosystem I --> NADPH
NADPH --> chlorohyll-P680 --> Calvin Cycle
Photosysten I --> photosystem II --> H2O - Correct Answers -H2O --> photosysyem II --
> an ETC --> photosystem I --> NADPH
a particular cell has twice the amount of DNA as that in the diploid amount for this
species. This particular cell is most likely?
in G2 of interphase
in G1 of interphase
just before entering the S phase
at the end of cytokensis
in a stage of meiosis when the cells are not able to divide at all - Correct Answers -in G2
interphase
Compared to C3 plants, C4 plants?
reduce the efficiency of photosynthesis by 50%
do not use Rubisco for CO2 reduction
can continue to reduce CO2 even at very low CO2 concentrations and high O2 levels
make a 4-carbon acid, oxaloacetate, which is then delivered to the Krebs cycle in
mitochondria
, have higher rates of photorespiration - Correct Answers -can continue to reduce CO2
even at very low CO2 concentrations and high O2 levels
A gradute student doing photosynthetic research measures the amounts of ATP and
NADPH in Calvin cycle plants in a one hour period and finds that 30,000 molecules of
ATP were consumed, but only 20,000 molecules of NADPH were consumed. Confused
he asks his mentor where did the additional ATP molecules, compared to the NADPH
amount come from. The mentor says they likely came from?
photosystem II directly
hydrolysis of water by oxygenase
non-cyclic electron flow in Photosystem II
substrate level phosphorylation
cyclic electron flow in photosystem I - Correct Answers -cyclic electron flow in
photosystem I
In thylakoid membranes of green plants, what is the main role of the antenna chlorophyll
pigment molecules?
to split water and release oxygen to the reactions center chlorophyll-P700
to synthesize ATP from ADP and Pi
to harvest photons and transfer light energy to the reaction center chlorophyll-P680
to transfer electrons to ferredoxin and then NADPH
to concentrate photons within the stroma (chloroplasm) - Correct Answers -to harvest
photons and transfer light energy to the reaction center chlorophyll-P680
the decrease in the amount of MPF activity at the end of mitosis is due to?
he degradation of cyclin
the destruction of the protein kinase CdK (cyclin dependent kinase)
synthesis of DNA
the accumulation of cyclin
decreased synthesis of CdK (cyclin dependent kinase) - Correct Answers -the
degradation of cyclin
