Which of the following is not concerned with protein synthesis?

In plant cells,the vacuole is:

Which of the following cell organelles is described by the given statements?
$(a)$ Contains small tubules.
$(b)$ Is bounded by a membrane.
$(c)$ Contains enzymes.
$(d)$ Found in both plants and animals.

Both lysosomes and vacuoles are endomembrane structures,yet they differ in terms of their functions. Comment.

In protozoans like $Amoeba$ and $Paramecium$,the organelle responsible for osmoregulation is:

Most of the water in mature plant cells occurs in