Adenosine Triphosphate. Adenosine triphosphate, or ATP, is the primary source of energy in both plant and animal cells. ATP is a nucleotide that is the basis for all cell reactions, including the reactionary process of converting food molecules into energy.
Hope this helps :)
Diffusion has a major part in this. It has proteins embedded in it that allow molecules to diffuse in and out of the cell up and down its concentration gradient.
It's definitely not the woman, so I'd say it's B. As the trait is recessive, a person who doesn't have hemophilia itself is likely to be able to pass it on to there children.
Scarlet fever was discovered in 1827, I believe