Multiple choice

The enzymes necessary for carbon fixation are present in _______.

  1. Grana

  2. Stroma

  3. Cristae

  4. Chloroplast envelope
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The material within the chloroplast, is called the stroma. It contains one or more molecules of small circular DNA. It also contains ribosomes, however most of its proteins, are encoded by genes contained in the host cell nucleus, with the protein products, transported to the chloroplast. The enzymes necessary for carbon fixation, occur in the stroma of the chloroplast.

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