Question

What is the composition of pyrenoid?

Answer 1

Pyrenoid:

1. The pyrenoid is a microcompartment found in algae and hornwort chloroplasts.
2. Its known purpose is to help the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase enhance photosynthetic carbon dioxide fixation.

Composition of Pyrenoid:

1. They're high in both starch and protein.
2. Only a few algae have the ability to store food in the form of oil droplets.
3. Pyrenoids have a thick proteinaceous area that is encased in a starchy sheath.
4. These are only found in algae chloroplasts and are involved in the polymerization of carbohydrates into starch (reserve polymers).