Chromosomes are made-up of

The only cell organelle seen in prokaryotic cells is

Living cells were discovered by

How does Amoeba obtain its food?

$(a)$ 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?

What is the role of smooth endoplasmic reticulum in the liver cells of vertebrate animals?