Which mechanism requires energy?
a. diffusion of oxygen into a red blood cell
b. diffusion of ions through a potassium channel
c. osmosis
d. exocytosis

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

What type of plant is good for a bioassay and where can i buy it? i only have a month.

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.