Answer:
The pyrenoid, a dense structure inside or beside chloroplasts of certain algae, consists largely of ribulose biphosphate carboxylase, one of the enzymes necessary in photosynthesis for carbon fixation and thus sugar formation. Starch, a storage form of glucose, is often found around pyrenoids.
B
(without the control you won't know what a normal result would be without the independent variable).
A, all members of kingdom animalia are able to move on their own
Prokaryotes don't have a nuclear envelope they have no nucleus.
