Endocrine communication involves hormones that reach their target cells via the bloodstream, whereas ________ communication involves local hormones that affect nearby cells
Fill in the blank(s) with correct word
paracrine
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Retroviruses are medically important viruses because
A) they include the viruses the cause hepatitis. B) some retroviruses cause cancer. C) they include the virus that causes AIDS. D) they include viruses that cause cancer and AIDS.
The two pancreatic hormones that control the flow of energy during the three phases of energy metabolism are:
(a) glucagon and secretin (b) thyroxine and insulin (c) inhibin and glucagon (d) insulin and glucagon
An endogenous ligand is:
A) any medication that binds to a receptor and causes a reaction. B) a molecule that is produced by the body and binds to a receptor. C) any molecule that is not naturally occurring in the human body. D) a synthetically made hormone that acts upon the endocrine system.
Horizontal gene transfer is less prevalent in eukaryotic species because
A. of the multicellularity in eukaryotic species, which is lacking in prokaryotic species. B. eukaryotic species reproduce by sexual reproduction. C. of the presence of organelles and multicellularity. D. of the presence of organelles in the cells of eukaryotic species. E. of multicellularity and sexual reproduction.