Chapter 8: Q. 17 (page 224)

Which order of molecular conversions is correct for the Calvin cycle?
$a . R u B P + G 3 P \to 3 - P G A \to s u g a r b . R u B i s C O \to C o_{2} \to R u B P \to G 3 P c . R u B O + C o_{2} \to \{R u B i s C O \} 3 - P G A \to G 3 P d . C o_{2} \to 3 - P G A \to R u B P \to G 3 P$

Short Answer

Expert verified

The $R u B i s C O$ enzyme is regenerated throughout the Calvin cycle and has a strong affinity for $C o_{2}$ As a result, option c.

Step by step solution

Introduction

Calvin cycle is a cycle of light-independent reactions that involves the formation of glucose from carbon dioxide.

Incorrect answer (a), (b) and (d)

$C o_{2}$ (carbon dioxide) is needed along with $R u B P$ (ribulose, bisphosphate) to produce $G 3 P$ (glyceraldehyde, phosphate).

Ribulose, bisphosphate carboxylase /oxygenase $R u B P$ is an enzyme that is used to initiate the reaction between and in the cycle.

$R u B P$ and $G 3 P$ are involved in initiation of the Calvin cycle.

Hence, the options a, b, and d. are incorrect.

correct answer (c) explanation

Rubisco catalyzes the reaction of carbon dioxide and RuBP to form $3 -$ PGA ( $3 -$ Phosphoglycerate ). NADPH ( reduced nicotinamide adenine dinucleotide phosphate) and ATP (adenosine triphosphate) produced during the light-dependent reactions are also used to convert $3 -$ PGA molecules into G $3$ P

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Which order of molecular conversions is correct for the Calvin cycle?
$a . R u B P + G 3 P \to 3 - P G A \to s u g a r b . R u B i s C O \to C o_{2} \to R u B P \to G 3 P c . R u B O + C o_{2} \to \{R u B i s C O \} 3 - P G A \to G 3 P d . C o_{2} \to 3 - P G A \to R u B P \to G 3 P$

Short Answer

Step by step solution

Introduction

Incorrect answer (a), (b) and (d)

correct answer (c) explanation

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Which order of molecular conversions is correct for the Calvin cycle?a.RuBP+G3P→3-PGA→sugarb.RuBisCO→Co2→RuBP→G3Pc.RuBO+Co2→RuBisCO3-PGA→G3Pd.Co2→3-PGA→RuBP→G3P

Short Answer

Step by step solution

Introduction

Incorrect answer (a), (b) and (d)

correct answer (c) explanation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Biology Textbooks

Organ Systems

Energy Transfers

Biology Experiments

Plant Biology

Reproduction

Chemistry of Life

Study anywhere. Anytime. Across all devices.

Which order of molecular conversions is correct for the Calvin cycle?
$a . R u B P + G 3 P \to 3 - P G A \to s u g a r b . R u B i s C O \to C o_{2} \to R u B P \to G 3 P c . R u B O + C o_{2} \to \{R u B i s C O \} 3 - P G A \to G 3 P d . C o_{2} \to 3 - P G A \to R u B P \to G 3 P$