If the carbon atom of the incoming CO2 molecule is labeled with a radioactive isotope of carbon, where will the radioactivity be measurable after one cycle?

Respuesta :

The calvin cycle is called the C3 cycle because the 3-carbon molecule is the first stable product of photosynthesis

Explanation:

The Calvin cycle reactions can be divided into  3 main stages namely the

  1. carbon fixation
  2. carbon reduction
  3. carbon regeneration

if the carbon atom of the incoming CO2 molecule is labeled with a radioactive isotope of carbon,the radioactivity will be measurable at the 3rd stage ,the regeneration of CO2 acceptor(RuBP)

Lanuel

Radioactivity will only be measurable at the third (3rd) stage of the Calvin cycle i.e Ribulose bisphosphate (RuBP).

What is a Calvin cycle?

Calvin cycle can be defined as the light-independent reactions through which green plants (autotrophs) and algae to turn carbon dioxide ([tex]CO_2[/tex]) obtained from the air into sugar, so as to provide food for their growths.

The Calvin cycle occurs in three (3) main stages and these include the following:

  • Carbon fixation
  • Carbon reduction
  • Carbon regeneration

Generally, when the carbon atom of an incoming carbon dioxide ([tex]CO_2[/tex]) molecule is labeled with a radioactive isotope of carbon, radioactivity will only be measurable at the third stage of the Calvin cycle as shown in the image below, which is the regeneration of carbon dioxide ([tex]CO_2[/tex]) as acceptor i.e Ribulose bisphosphate (RuBP).

Read more on Calvin cycle here: https://brainly.com/question/920840

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