Ahormone attaches to a target cell at a receptor protein. what do you know about this hormone?
it is steroid hormone
it will bind directly to dna
it is able to pass through cell membranes
it will not enter the nucleus

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

Which group of molecules are targeted by the kinases in order to control this movement

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.