Question

Which part of the light-independent reactions would be affected if a cell could not produce the enzyme RuBisCO?

Short answer

None of the cycle could take place, because RuBisCO its essential in fixing carbon dioxide.

Step-by-step solution

Step1. Introduction 

The light-independent reactions can proceed once products (NADPH and ATP) of the light-dependent reactions are present in the chloroplast.

RuBisCo is an enzyme that catalyzes the attachment of carbon molecule to ribulose phosphate (RuBp) forming the 6-carbon molecule that immediately splits into two 3-carbon molecules of 3-phosphoglycerate (3-PGA).

Step2. Explanation 

Specifically, RuBisCO catalyzes the reaction between carbon dioxide and RuBP at the start of the cycle.

If a cell could not produce the enzyme RuBisCO , none of the cycle could take place, because RuBisCO its essential in fixing carbon dioxide.