$(a)$ What role do vacuoles play in a typical plant cell?
$(b)$ What will happen if the Golgi apparatus is removed from the cell?
$(c)$ Why is the inner membrane of mitochondria deeply folded?

(N/A) $(i)$ Vacuoles are storage sacs for solid or liquid contents.
$(ii)$ In plant cells,vacuoles are full of cell sap and provide turgidity and rigidity to the cell.
$(iii)$ Many substances important for the life of the plant cell,such as amino acids,sugars,various organic acids,and some proteins,are stored in vacuoles.
$(b)$ If the Golgi apparatus were removed from the cell,the following would occur:
$(i)$ Packaging and dispatching of proteins to various targets inside and outside the cell would be disrupted.
$(ii)$ Cellular products could not be stored or modified.
$(iii)$ The formation of complex sugars from simple sugars would not take place.
$(iv)$ Lysosome formation would be affected,leading to the accumulation of worn-out organelles,which could result in cell death.
$(c)$ The deeply folded inner membrane of mitochondria,known as cristae,creates a large surface area for $ATP$-generating chemical reactions.