Which of the following is not a function of a vacuole?

$(a)$ List any two structural differences and two similarities between a plant cell and an animal cell.
$(b)$ What would happen if an animal cell is kept in distilled water for $24$ hours?

Plasmolysis in a plant cell is defined as

Which structure do the cork cells resemble as observed by Robert Hooke?

State the reason for the following:
$(i)$ Mitochondria are known as the powerhouse of the cell.
$(ii)$ Plastids are able to make their own protein.
$(iii)$ Plant cells shrink when kept in a hypertonic solution.

Lipid molecules in the cell are synthesized by: