Molecules can cross cell membranes from areas of low concentration to areas of high concentration by binding with carrier proteins and ATP. What is this process called?

A. Osmosis

B. Endocytosis

C. Facilitated Diffusion

D. Active Transport

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other