Answer:
As somatic cells are diploid (2n) 2n=56
gametes receive only haploid set so, n=28
Enzymes are protein macromolecules.
According to science, D would be the correct answer. Hope this helps!
The heart and the arteries of a person, both contracts to pump the blood throughout the body. The aorta, which is the largest artery of the human body, pumps the blood from the heart to the entire body of a person. The oxygen-rich blood is pumped out of the left ventricle when its contraction into the aorta, from where it is transported to the whole body.
Hence, the given statement is true.
