An enzyme known as rubisco enables plants to use large amounts of
carbon dioxide. This enzyme is most likely active in the
O (1) nucleus
O (2) vacuoles
O (3) mitochondria
O (4) chloroplasts

Respuesta :

The enzyme rubisco is most likely active in the chloroplasts.  

• In the chloroplasts of the plants, the enzyme rubisco is present.  

• It takes part in fixing atmospheric carbon dioxide at the time of photosynthesis and in oxygenation of the resulting compound at the time of photorespiration.  

Rubisco is the name given to the enzyme ribulose-1,5-bisphosphate, which catalyzes the carbon dioxide entry into the photosynthetic metabolism, monitors the pool sizes of essential photosynthetic intermediates, and provides acceptor molecules, which consume the products of the light reactions of photosynthesis.

Thus, option 4, that is, chloroplasts is correct.

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