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Chapter 8: Q.8 (page 225)

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

Short Answer

Expert verified

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

Step by step solution

01

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).

02

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.

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Most popular questions from this chapter

Which of the following components is not used by both plants and cyanobacteria to carry out photosynthesis?

a. chloroplasts

b. chlorophyll

c. carbon dioxide

d. water

Why does it take three turns of the calvin cycle to produce G3P, the initial product of photosynthesis?

Which statement about thylakoids in eukaryotes is not correct?

a. Thylakoids are assembled into stacks.

b. Thylakoids exist as a maze of folded membranes.

c. The space surrounding thylakoids is called stroma.

d. Thylakoids contain chlorophyll.

In which compartment of the plant cell do the light independent reactions of photosynthesis take place?

a. thylakoid

b. stroma

c. outer membrane

d. mesophyll

Three of the same species of plant are each grown under a different colored light for the same amount of time. Plant A is grown under blue light, Plant B is grown under green light, and Plant C is grown under orange light. Assuming the plants use only chlorophyll a and chlorophyll b for photosynthesis, what would be the predicted order of the plants from most growth to least growth?
a. A,C,B
b. A,B,C
c. C,A,B
d. B,A,C
See all solutions

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