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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