Does the Calvin cycle use light energy?

The Calvin cycle refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the Calvin Cycle is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers (ATP and NADPH) are products of light-dependent reactions.

What is the energy used in Calvin cycle?

ATP
Six “turns” of the Calvin cycle use chemical energy from ATP to combine six carbon atoms from six CO2 molecules with 12 “hot hydrogens” from NADPH. The result is one molecule of glucose, C6H12O6.

How does light affect the Calvin cycle?

The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP⁺ to the light reactions.

How much ATP does the Calvin cycle use?

18 ATP
The Calvin cycle uses 18 ATP and 12 NADPH molecules to produce one glucose molecule.

Why does Calvin cycle need products of light?

Because it is needed to convert oxygen into sugar. Explanation: Although the Calvin Cycle is not light-dependent directly, it is light-Dependent indirectly because the required energy carriers are results of light-dependent processes.

What is the energy source for the light reaction?

The light reactions capture energy from sunlight, which they change to chemical energy that is stored in molecules of NADPH and ATP.

What are the 2 products of the light reaction used in the Calvin cycle?

ATP and NADPH are both products of the light reactions and are used to power the Calvin cycle.

When light shines on chlorophyll the light energy is transformed into?

In this case plants convert light energy (1) into chemical energy, (in molecular bonds), through a process known as photosynthesis. Most of this energy is stored in compounds called carbohydrates. The plants convert a tiny amount of the light they receive into food energy.

When light excites chlorophyll The chlorophyll molecule?

A photon of light energy travels until it reaches a molecule of chlorophyll. The photon causes an electron in the chlorophyll to become “excited.” The energy given to the electron allows it to break free from an atom of the chlorophyll molecule. Chlorophyll is therefore said to “donate” an electron (Figure 5.12).

Does the Calvin cycle produce ATP?

Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts). This illustration shows that ATP and NADPH produced in the light reactions are used in the Calvin cycle to make sugar.

How many ATP light reactions produce?

The light-dependent reactions can be summarized as follows: 12 H2O + 12 NADP+ + 18 ADP + 18 Pi + light and chlorophyll yields 6 O2 + 12 NADPH + 18 ATP.

Which process is most directly driven by light energy?

The process of removal of electrons from chlorophyll molecules is most directly driven by light energy.