Question

what are three main types of cells?
a) passive, skin, and brain cells
b) blood, skin, and brain cells
c) blood, nerve, and brain cells
d) blood, nerve, and skin cells

Answer 1

D) blood, nerve , and skin cells

Since passive is not a main cell so it is not A and neither is brain. But blood and nerves are two and skin is the third

Answer 2

Answer:

A: Cell B: Organ C: Tissue

Explanation: