Answer: option C - activating second messengers and stimulating glycogenolysis and gluconeogenesis.
Explanation:
Glucagon is an hormone, produced by the pancreas, that opposes the action of insulin by stimulating the production of SUGAR.
Glucagon is usually released whenever blood glucose levels is detected to be LOW. it works by activating secondary messengers.
A negative feedback example is Human body temperature - The hypothalamus of a human responds to temperature fluctuations and responds accordingly. If the temperature drops, the body shivers to bring up the temperature and if it is too warm, the body will sweat to cool down due to evaporation.
Genes involved in lactose metabolism can be found in the E. coli lac operon. Only when lactose and glucose are both present does it express.
<h3>Why are the E. coli genes involved in lactose metabolism referred to as an operon?</h3>
They are both under the same promoter's control. A promoter is a brief DNA region where RNA polymerase interacts to initiate transcription of the downstream genes that are under its transcriptional control. When more than one gene is controlled by the same promoter, we refer to the group of genes as an operon.
<h3>The lac operon turns on when there is lactose present.</h3>
Lactose binds to the repressor protein and prevents it from binding to the operator when lactose is present in the media.
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every time an organism consumes something it receives only 10% of the prey's energy. in this case it would be 300kcal.
