The answer is D: Do
not initiate cell signaling by interacting with a receptor in the plasma
membrane. Signaling molecules that are
large and cannot diffuse through the
pores of the cell membrane are the ones that initiate internal cell signaling
cascade by binding to receptors on the cell membrane.
Answer:
The endocrine system produces hormones that are transported to the target regions by the circulatory system.
The Circulatory System delivers oxygen and nutrients in the blood to the surrounding cells to maintain Homeostasis. The blood in the Circulatory System is needed throughout the body so that other systems work properly. Like for instance the Nervous System has the brain, and the brain needs blood to function.
hope this helps
With world conditions today its hard for a family to survive. So not to many people will want kids in order to survive. So I say Yes There is.
Some protist can make their own food(Photosynthesis) , like algae. Some are like a fungus type such as slime mold, they decompose decaying matter.