The dirt and fragments decompose and give the plant proteins/nutrients. Soil also anchors roots down and provides some water
B. Sunlight doesn't reach the bottom of lakes..
Answer:
Builds proteins needed for all of the cell's other functions
Explanation:
Answer:
Answer is D - cAMP.
Explanation:
cAMP is a small molecule that functions as an intracellular signaling molecule - a second messenger. The first messenger would be the thing that activated the GPCR (e.g. a hormone). The GPCR is a signal transducer (converts extracellular signal to intracellular signal). Once activated, the GPCR activates adenylate cyclase which can be called a signal effector - it is an enzyme that produces cAMP.