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, !

Ameadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. a fungus colonizes the meadow and kills most of its vegetation. what is most likely to happen to the populations of herbivores and carnivores in the ecosystem? a. the populations of herbivores and carnivores will increase because there will be less competition for chemical energy. b. the populations of herbivores and carnivores will remain stable because the fungus cannot infect these organisms. c. the populations of herbivores will decrease because of vegetation loss, but the population of carnivores will remain stable. d. the populations of herbivores and carnivores will decline because less chemical energy will be stored in the ecosystem.

Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the fetus. how would the discovery of the human genome contribute to this process?

What factors contribute to the effect an environmental toxin has on the human body?