Which order of molecular conversions is correct for the Calvin cycle? CO2-- --> 3-PGA GA3P RUBP

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Part A and B

**Title: Understanding the Calvin Cycle**

**Question:** Which order of molecular conversions is correct for the Calvin cycle?

**Interactive Exercise:**

- The process begins with CO2.
- There are three dropdown options available for the subsequent molecular conversion:
  1. 3-PGA (3-Phosphoglycerate)
  2. GA3P (Glyceraldehyde 3-phosphate)
  3. RuBP (Ribulose bisphosphate)

**Objective:**
Select the correct sequence of molecular conversions in the Calvin cycle starting from CO2. The correct choices demonstrate the path of carbon fixation and sugar production in photosynthesis.
Transcribed Image Text:**Title: Understanding the Calvin Cycle** **Question:** Which order of molecular conversions is correct for the Calvin cycle? **Interactive Exercise:** - The process begins with CO2. - There are three dropdown options available for the subsequent molecular conversion: 1. 3-PGA (3-Phosphoglycerate) 2. GA3P (Glyceraldehyde 3-phosphate) 3. RuBP (Ribulose bisphosphate) **Objective:** Select the correct sequence of molecular conversions in the Calvin cycle starting from CO2. The correct choices demonstrate the path of carbon fixation and sugar production in photosynthesis.
**Question:**  
If three molecules of carbon dioxide enter the Calvin cycle (three "turns" of the cycle), how many GA3P molecules are produced and how many are exported?

**Dropdown Options:**  
- GA3P made  
  - 1
  - 2
  - 3
  - 6
  - 12

- GA3P exported  
  - 1
  - 2
  - 3
  - 6
  - 12

**Explanation**:  
This text is a part of a multiple-choice question regarding the Calvin cycle. It asks about the production and export of glyceraldehyde 3-phosphate (GA3P) molecules when three carbon dioxide molecules enter the cycle. The dropdown menu provides numerical options to choose from for both GA3P production and export.
Transcribed Image Text:**Question:** If three molecules of carbon dioxide enter the Calvin cycle (three "turns" of the cycle), how many GA3P molecules are produced and how many are exported? **Dropdown Options:** - GA3P made - 1 - 2 - 3 - 6 - 12 - GA3P exported - 1 - 2 - 3 - 6 - 12 **Explanation**: This text is a part of a multiple-choice question regarding the Calvin cycle. It asks about the production and export of glyceraldehyde 3-phosphate (GA3P) molecules when three carbon dioxide molecules enter the cycle. The dropdown menu provides numerical options to choose from for both GA3P production and export.
Expert Solution
Step 1: Introduce about photosynthesis

Chlorophyll containing organisms produce simple organic molecules (sugar) from carbon dioxide and water with the help of solar energy. This process is known as photosynthesis and involves two distinct phases, a light dependent phase or light reaction of photosynthesis and a light independent phase or dark reaction of photosynthesis.

The dark reaction of photosynthesis is also known as Calvin cycle.

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