Biology Higher Plants Photosynthesis Photorespiration Online Exam Quiz
Biology Higher Plants Photosynthesis Photorespiration GK Quiz. Question and Answers related to Biology Higher Plants Photosynthesis Photorespiration. MCQ (Multiple Choice Questions with answers about Biology Higher Plants Photosynthesis Photorespiration
Which of these take place in the first step of the Calvin pathway?
Options
A : 3 molecules of 2PGA are formed
B : RuBisCO combines with CO2
C : RuBP and CO2 give PGA
D : RuBP acts as a catalyst
What is formed when the active site of RuBisCO binds to oxygen?
Options
A : ATP
B : OAA
C : PGA
D : Phosphoglycolate
Which of these is not true regarding photorespiration?
Options
A : ATP is not synthesized
B : 1 molecule of phosphoglycerate is formed
C : 1 molecule of PGA is formed
D : The active site of RuBisCO binds to oxygen
Why is the productivity of C4 plants better than that of C3 plants?
Options
A : C4 plants show Kranz anatomy
B : C4 plants lack photorespiration
C : C4 plants show high phosphoglycerate formation
D : C4 plants show high phosphoglycolate formation
Which of these cannot help us differentiate between C3 and C4 plants?
Options
A : Carbon dioxide acceptor molecule
B : Presence of Kranz anatomy
C : Photorespiration
D : Number of chloroplasts
What factor determines the binding of carbon dioxide to the active site of RuBisCO?
Options
A : Intensity of sunlight
B : Number of chloroplasts
C : Opening and closing of stomata
D : Relative O2 and CO2 concentration
What does the name RuBisCO imply?
Options
A : Its active site can bind to oxygen and carbon dioxide
B : It leads to the combination of oxygen and carbon dioxide
C : It uses carbon and oxygen to breakdown sugar
D : It uses carbon and oxygen to breakdown RuBP
Which of these are synthesized during photorespiration?
Options
A : NADPH
B : ATP
C : CO2
D : Sugars
What is the most abundant enzyme in the world?
Options
A : Papain
B : Alpha amylase
C : RuBisCO
D : Horse radish peroxidase
Why is carbon dioxide fixation decreased in some C3 plants?
Options
A : Phosphoglycerate formation
B : Unavailability of RuBP
C : Oxygen binds to RuBisCO
D : Oxygen binds to RuBP
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