Answer:
DOMAIN is the broadest level of classification and ______ is the most specific.
Explanation:
I DONT KNOW THE SECOND ONE SORRY
Answer:
B. An egg cell and a sperm cell unite.
Explanation:
In facilitated diffusion, substances move into or out of cells down their concentration gradient through protein channels in the cell membrane. Simple diffusion and facilitated diffusion are similar in that both involve movement down the concentration gradient.
Ribosomes although the mitochondria is similar its ribosomes.