It’s critical because it checks the cell for problems or mutations that could potentially harm it in later steps or make it like burst lol
Answer:
A dolphin or whale.
Explanation:
It is a mammal, but is mistaken for a fish since it lives in the water.
Hemoglobin is contained in red blood cells,which efficiently carries oxygen from the lungs to the tissues of the body. It also helps in the transportation of carbon dioxide and hydrogen ions back to the lungs.
Option A, B, D are only applicable for steroid hormones ( hydrophobic)
So the answer is C
