Which one of these is not an example of intracellular communication?

a. heart cells contract together

b. dna in a cell replicates

c. water regulation by a cell's central vacuole

d. charged ions distributed a plasma membrane?

2. which intercellular communication type changes membrane permeability?

a. molecular receptor

b. enzyme-linked receptor

c. transmembrane receptor

d. ion channel- linked receptor
hlep me, !

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

What volume of a 0.25 m solution can be made using 0.55 moles of ca(oh)2

Name the glands associated with human digestive system