Which of the following statements about the calvin cycle is correct

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which of the following statements about the Calvin
Cycle are correct? pick all that are true.

1. The reducing power of NADPH is used to reduce
3-phosphoglycerate to glyceraldehyde 3-phosphate

2. Nine molecules of ATP are used to produce one
glucose molecule

3. The first stable product of the cycle is
3-phosphoglycerate

4. The carboxylation of the 5-carbon sugar RuBP is
catalyzed by the enzyme rubisco

5. Six molecules of G3P formed in the Calvin cycle are
used to produce five molecules of RuBP and one G3P

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Answer

Statement 1 is true : NADPH is used in conversion of
3-phosphoglycerate to glyceraldehyde 3-phosphate consuming 1
ATP.

Statement 2 is false : It takes three turns of the Calvin cycle
to create one molecule of glyceraldehyde-3 phosphate. After six
turns of the Calvin cycle, two molecules of glyceraldehyde-3
phosphate can be combined to make a glucose molecule. This means
that to produce a single molecule of glucose, 18 ATP and 12 NADPH
are consumed.

Statement 3 is true : The C3 plants are called so because the
first stable product of photosynthesis in these plants is a three
carbon atom containing compound 3- phosphoglyceric acid (3
PGA).

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Statement 4 is true : Ribulose-1,5-bisphosphate
carboxylase/oxygenase, commonly known by the abbreviations Rubisco,
rubisco, RuBPCase, or RuBPco, is an enzyme involved in catalysing
carboxylation of RUBP.

Statement 5 is true : 5 G3P molecules are utilised in
regeneration of RUBP , while the remaining 1 G3P leave the Calvin
cycle and forms the glucose molecule


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