Acetylcholine binds to a GPCR on heart muscle. The activated receptor stimulates a trimeric Gi protein, which opens a K channel in the plasma membrane. Following stimulation with Acetylcholine, what impact on heart rate would you expect from each of the following?

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.