Answer:
D. The circulatory system transports oxygen that the respiratory system brings into the body
Explanation:
The circulatory system which is made up of the heart and vessels such as veins and arteries carry oxygen, nutrients and hormones to other parts of the body. The respiratory system deals with bringing in the oxygen into the body for use which is then distributed by the circulatory system to various parts.
<span>A phosphate group is just a phosphorus atom bound to four oxygen atoms, but it has many important roles. Along with sugars and bases, it makes up nucleic acids, like DNA and RNA. As part of energy carriers, like ATP, it provides energy for moving our muscles.</span>
it would be bind nucleotides together so therefore the answer is a
Answer:
SRY
Explanation:
Sex determination in mammals including humans is genetically and hormonally controlled.
Genetically gonadal sex determination is mediated by a gene called SRY. This gene is known as the mammalian Y-chromosomal testis-determining gene. It induces sex determination in males.
Recent studies revealed that SRY plays an important role in inducing Sertoli cells differentiation. The Sertoli cells, in turn, guide testis formation.
Therefore, in males, differentiation of testis is switched on by expression of the Y-linked SRY gene.