What provides the carbon atoms that are incorporated into sugar molecules in the Calvin cycle?

Answer 1

The carbon atoms come from carbon dioxide.

The Calvin cycle is a series of biochemical redox reactions that take place in in photosynthetic organisms.

The cell first captures the energy of light and uses it to make #"ATP"# and #"NADPH"#.

The Calvin cycle then uses this energy to convert carbon dioxide and water into glyceraldehyde-3-phosphate (#"G3P"#) for use in other metabolic reactions.

(from www.thinglink.com)

The overall reaction for the Calvin cycle is:

#"3CO"_2 + "6NADPH" + "9ATP" + "6H"^+ → underbrace("C"_3"H"_6"O"_3"-P")_color(red)("G3P") + "6NADP"^+ + "9ADP" + "8P"_i +"3H"_2"O"#

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Answer 2

Eli Ayoub

Carbon atoms from atmospheric carbon dioxide (CO2) molecules are incorporated into sugar molecules through the Calvin cycle.

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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.