337056
The reaction that is responsible for the primary fixation of \(C{O_2}\) is catalysed by
1 RuBP carboxylase
2 PEP carboxylase
3 RuBP carboxylase and PEP carboxylase
4 PGA synthase
Explanation:
RuBP carboxylase in \({C_3}\) plants and PEP carboxylase in \({C_4}\) plants.
NCERT Exemplar - 5
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337057
Ribulose bisphosphate is a
1 5-carbon sugar
2 Ketose sugar
3 \(C{O_2}\) acceptor
4 All of them
Explanation:
RuBP is a 5-carbon ketose sugar which acts as the primary acceptor of \(C{O_2}\) in Calvin Cycle.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337058
RuBisCO is the most _________
1 Least carbohydrate
2 Least protein
3 Abundant protein
4 Abundant carbohydrate
Explanation:
RuBisCO is the most abundant enzyme (protein) in the universe.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337059
The reactions of Calvin cycle not directly dependent on light, but they usually do not occur at night - Why?
1 Night is often too cold for these reactions to occur
2 \(C{O_2}\) concentration in night is too high for these reactions to occur
3 Plants usually open their stomata at night
4 Calvin cycle is dependent on the products of light reaction
Explanation:
Calvin cycle continues till products of light reaction are not completely consumed. Until night, all the ATP and NADPH produced by light reaction is already used for carbon fixation. Hence, \({C_3}\) cycle is shut down throughout the night.
337056
The reaction that is responsible for the primary fixation of \(C{O_2}\) is catalysed by
1 RuBP carboxylase
2 PEP carboxylase
3 RuBP carboxylase and PEP carboxylase
4 PGA synthase
Explanation:
RuBP carboxylase in \({C_3}\) plants and PEP carboxylase in \({C_4}\) plants.
NCERT Exemplar - 5
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337057
Ribulose bisphosphate is a
1 5-carbon sugar
2 Ketose sugar
3 \(C{O_2}\) acceptor
4 All of them
Explanation:
RuBP is a 5-carbon ketose sugar which acts as the primary acceptor of \(C{O_2}\) in Calvin Cycle.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337058
RuBisCO is the most _________
1 Least carbohydrate
2 Least protein
3 Abundant protein
4 Abundant carbohydrate
Explanation:
RuBisCO is the most abundant enzyme (protein) in the universe.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337059
The reactions of Calvin cycle not directly dependent on light, but they usually do not occur at night - Why?
1 Night is often too cold for these reactions to occur
2 \(C{O_2}\) concentration in night is too high for these reactions to occur
3 Plants usually open their stomata at night
4 Calvin cycle is dependent on the products of light reaction
Explanation:
Calvin cycle continues till products of light reaction are not completely consumed. Until night, all the ATP and NADPH produced by light reaction is already used for carbon fixation. Hence, \({C_3}\) cycle is shut down throughout the night.
337056
The reaction that is responsible for the primary fixation of \(C{O_2}\) is catalysed by
1 RuBP carboxylase
2 PEP carboxylase
3 RuBP carboxylase and PEP carboxylase
4 PGA synthase
Explanation:
RuBP carboxylase in \({C_3}\) plants and PEP carboxylase in \({C_4}\) plants.
NCERT Exemplar - 5
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337057
Ribulose bisphosphate is a
1 5-carbon sugar
2 Ketose sugar
3 \(C{O_2}\) acceptor
4 All of them
Explanation:
RuBP is a 5-carbon ketose sugar which acts as the primary acceptor of \(C{O_2}\) in Calvin Cycle.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337058
RuBisCO is the most _________
1 Least carbohydrate
2 Least protein
3 Abundant protein
4 Abundant carbohydrate
Explanation:
RuBisCO is the most abundant enzyme (protein) in the universe.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337059
The reactions of Calvin cycle not directly dependent on light, but they usually do not occur at night - Why?
1 Night is often too cold for these reactions to occur
2 \(C{O_2}\) concentration in night is too high for these reactions to occur
3 Plants usually open their stomata at night
4 Calvin cycle is dependent on the products of light reaction
Explanation:
Calvin cycle continues till products of light reaction are not completely consumed. Until night, all the ATP and NADPH produced by light reaction is already used for carbon fixation. Hence, \({C_3}\) cycle is shut down throughout the night.
337056
The reaction that is responsible for the primary fixation of \(C{O_2}\) is catalysed by
1 RuBP carboxylase
2 PEP carboxylase
3 RuBP carboxylase and PEP carboxylase
4 PGA synthase
Explanation:
RuBP carboxylase in \({C_3}\) plants and PEP carboxylase in \({C_4}\) plants.
NCERT Exemplar - 5
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337057
Ribulose bisphosphate is a
1 5-carbon sugar
2 Ketose sugar
3 \(C{O_2}\) acceptor
4 All of them
Explanation:
RuBP is a 5-carbon ketose sugar which acts as the primary acceptor of \(C{O_2}\) in Calvin Cycle.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337058
RuBisCO is the most _________
1 Least carbohydrate
2 Least protein
3 Abundant protein
4 Abundant carbohydrate
Explanation:
RuBisCO is the most abundant enzyme (protein) in the universe.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337059
The reactions of Calvin cycle not directly dependent on light, but they usually do not occur at night - Why?
1 Night is often too cold for these reactions to occur
2 \(C{O_2}\) concentration in night is too high for these reactions to occur
3 Plants usually open their stomata at night
4 Calvin cycle is dependent on the products of light reaction
Explanation:
Calvin cycle continues till products of light reaction are not completely consumed. Until night, all the ATP and NADPH produced by light reaction is already used for carbon fixation. Hence, \({C_3}\) cycle is shut down throughout the night.
