Answer:
1. C -make food into energy
2. C - cellulose
3. B - organelles
Answer:
accepting electrons at the end of the electron transport chain.
Explanation:
Explanation:
It's little bit short but it will help you and you can get full mark hope it will help you! Have a nice day. ^_^
Answer:
Because natural selection selects for it. Thus it persists.
Explanation:
You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.
