Can anyone please explain why C is the correct answer?

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

What does it mean for an allele to be dominant?

Just a quick question. will give pointswhat is the root word of "blood."it is written in my homework as hemat(o) : blood. so, should i write that the root word as hemat or hemato or hemat(o). i'm really confused.