Without the light-dependent reactions of photosynthesis, the Calvin-Benson cycle would not be possible because it would lack what molecules?

Answer 1

Calvin-Benson cycle would not be possible without the light dependent reactions because it would lack ATP and #NADPH2# molecules.

Photosynthesis occurs in 2 steps:

Hill's reaction or Light reaction
Dark reaction or Blackmann's reaction.

Light reaction occurs in presence of light in which solar energy is converted into chemical energy in form of ATP molecules and reducing power #NADPH2# . Oxygen is liberated due to photolysis of water.

Dark reaction simply involves reduction of #CO2# into glucose ( #C6H12O6#) in a series of reactions that constitute Calvin-Benson cycle.

Dark reaction can occur irrespective of the presence of light, but is dependent upon the end products of the light reaction. ATP and #NADPH2# molecules produced during light reaction are used in different reactions of Calvin-Benson cycle.

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Answer 2

Sebastian Alvarez

The Calvin-Benson cycle depends on light-dependent reactions for its operation, and without these reactions, ATP and NADPH molecules—which are produced during these reactions—would not be available for the Calvin-Benson cycle to occur.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.