What ion is sometimes used as a second messenger of amino acid—based hormones?

In familial hypercholesterolemia individuals homozygous for the allele causing the disorder completely lack receptors on liver cells that take up cholesterol from the blood stream. heterozygous have one-half the number of receptors while individuals homozygous for the normal allele are phenotypically normal. this is an example of a. epistasis b. complete dominance c. incomplete dominance d. codominance

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

The activity of the modern sample is 1.10 bq . how long does that measurement take?