Answer: 2 electrons
Explanation:
The inner shell (1st shell) can hold 2 electrons, the next shell can hold 8 electrons and the third shell can hold 18 electrons.
The same ligand can bind to different receptors causing different responses (e.g.. acetylcholine). On the other hand, different ligands binding to different receptors can produce the same cellular response (e.g. glucagon, epinephrine).
Answer:
individual organisms of the same species living in the same geographic location at the same time makes up a population.
Explanation:
<span>Carbon is most abundant in the atmosphere and hydrosphere.</span>
