1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
In photosystem I, the first electron acceptor is
A
an iron-sulphur protein
B
ferredoxin
C
cytochrome
D
plastocyanin.
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
During photorespiration, the oxygen consuming reaction(s) occur in
A
stroma of chloroplasts
B
stroma of chloroplasts and mitochondria
C
stroma of chloroplasts and peroxisomes
D
grana of chloroplasts and peroxisomes.
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
As compared to a C3-plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4-plants?
A
Two
B
Six
C
Twelve
D
Zero
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because
A
effective pumping of CO2 into bundle sheath cells
B
RuBisCo in C4 plants has higher affinity for CO2
C
four carbon acids are the primary intial CO2 fixation products
D
the primary fixation of CO2 is mediated via PEP carboxylase.
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