1.who among the scientist below said that animals are made-up of cells?

a.Mathias Schleiden
b.Robert Hooke
c.Rudolf Virchow
d.Theodor Schwann

2.what is the basic structural and functional unit of all living creatures?

a.cell
b.molecule
c.Organelle
d.Tissue

3.Which organelle holds the key for the continuation of a certain population to exist?

a.Lysosomes
b.Nucleus
c.Peroxisomes
d.Vacoules​