Epinephrine triggers a direct signal transduction pathway.
I know this because when epinephrine binds to it's receptor example on a muscle cell,this is known as a type of G protein -coupled receptor,signal transduction cascade is triggered and this involves the production of a second messenger molecule cyclic AMP(cAMP).
Epinephrine also know as Adrenaline or sus-phrine.
It is a vasoconstrictor,broncho dilator and a sympathetic stimulant.
It constricts the peripheral abdominal organs as well as a stimulating the heart beat thereby raising the blood pressure,it also relaxes the spasms of the bronchial muscles thereby promoting ventilation of the lungs.
Any disease that produces fat malabsorption can bring about deficiencies of vitamins a, d, e, and k.
Answer:Limiting factors can be both.
Explanation: Biotic limiting factors can be the amount of food in the area, mates, and competition for other resources. But they can also be abiotic due to tempature, natural, disasters, sunlight and stuff like that.
