It helps the cell by making sure everything gets circulated throughout the cell
Answer:
b
Explanation:
The R in RNA stands for Ribosomes which are proteins.
Answer:
Hi,
The correct answer option is B; A tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat
Explanation:
In parasitism, one of the organism, the parasite lives in or on the other organism namely the host causing it harm and sometimes death.For example a tick that lives on dogs is a parasite.In this answer choice, the rat is the host whereas the tapeworm is the parasite.
Best of Luck!
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.
