<h3><u>Answer;</u></h3>
b). Activation of an upstream guanine nucleotide exchange factor
<h3><u>Explanation</u>;</h3>
- <em><u>When a ligand activates the G protein-coupled receptor, it induces a conformational change in the receptor that allows the receptor to function as a guanine nucleotide exchange factor (GEF) that exchanges GDP for GTPthus turning the G protein-coupled receptor on.</u></em>
- The activated G-protein then dissociates into an alpha (G-alpha) and a beta-gamma complex.
Answer:
the geosphere, atmosphere, hydrosphere and biosphere.
Four spheres are all independent parts of a system. The spheres interact with each other, and a change in one area can cause a change in another. Plants (biosphere) draw water (hydrosphere) and nutrients from the soil and release water vapor into the atmosphere. The biosphere contains all the planet's living things.
Explanation:
hope this helps 8D
I'm guessing C because the crocodile mom is protecting the babies
I believe the answers are removing substances in an ecosystem and the usage of organisms to add important materials. Bioremediation naturally happens where small organisms would clean up soil and groundwater that is contaminated. While the latter, is a process where you add organisms to hasten the degradation.