Answer:
https://search.yahoo.com/search?fr=mcafee&type=E210US91088G91495&p=brainly.com
Explanation:
Genetic divertion occurs with reproductive isolation
Answer:
a. It is a hormone that acts upstream in the signaling pathway (i.e., acting as a ligand by binding to cell receptors)
b. Dopamine-mediated pathways
Explanation:
It is well known that many cellular transduction pathways are activated via binding of signaling molecules (ligands) to receptors capable of triggering signaling cascades into the cell. For example, dopamine is a signaling hormone (neurotransmitter) involved in diverse brain processes (i.e., motor control, emotional response, etc). It is a neurotransmitter that binds to dopamine receptors and then stimulates the enzyme adenylate cyclase in a process that subsequently activates the production of the second messenger cyclic adenosine monophosphate (cAMP). Finally, cAMP acts as an intracellular signal transductor that play roles in many biological processes by transferring into the cell the effects of dopamine.
<span>Cigarettes were not outlawed when the dangers were first noticed, because their lobby is very strong. Their industry is gaining lots of money by selling cigarettes, so they didn't want to stop producing them. Instead, they settle for reducing the nicotine and inventing new forms of cigarettes (the electrical ones for example).</span>
Answer:
F oxygen
Explanation:
we need oxygen for respiration and hydration