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Which enzyme catalyzes the first step of the Calvin cycle?

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Question: Which enzyme catalyzes the first step of the Calvin cycle?

Options:

  1. Rubisco
  2. ATP synthase
  3. NADP+ reductase
  4. Phosphofructokinase

Correct Answer: Rubisco

Solution: 

Rubisco catalyzes the first step of the Calvin cycle by fixing carbon dioxide.

Which enzyme catalyzes the first step of the Calvin cycle?

Practice Questions

Q1
Which enzyme catalyzes the first step of the Calvin cycle?
  1. Rubisco
  2. ATP synthase
  3. NADP+ reductase
  4. Phosphofructokinase

Questions & Step-by-Step Solutions

Which enzyme catalyzes the first step of the Calvin cycle?
Correct Answer: Rubisco
  • Step 1: Understand that the Calvin cycle is a process in plants that helps convert carbon dioxide into glucose.
  • Step 2: Identify that an enzyme is a special protein that helps speed up chemical reactions in the body.
  • Step 3: Learn that Rubisco is the name of the enzyme involved in the Calvin cycle.
  • Step 4: Know that the first step of the Calvin cycle involves fixing carbon dioxide, which means capturing it from the air.
  • Step 5: Conclude that Rubisco is the enzyme that catalyzes (or speeds up) this first step by fixing carbon dioxide.
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