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.
This is true I looked up in the science dictionary.
D is the answer to the problem
Answer:
so many processes requires oxygen to operate .
An example is the process of plants making their own food .
Answer:
Sexual repro means combining genetics from parents, while asexual repro produces an offspring from only one parent.
