The best way to refuse is to just say "I'm good man" or something like that. Now if they keep trying to get you to do it then just leave...or do it[which i do not recommend considering most drugs are illegal when it comes to any use that isn't prescribed by a medical profesional such as your doctor or someone above him/her],but yeah it's best to just say no or leave.
Correct answer choice is :
<h2>B) Polypeptide </h2><h2 /><h3>Explanation:</h3><h3 />
Polypeptides are strings of amino drugs. Proteins are formed up of one or more polypeptide molecules. The amino acids are connected covalently by peptide bonds. Every amino acid has a bizarre R group, a special amino acid chain produces a polypeptide whose purpose is conditional upon its chemical structure.
In addition to cardio-respiratory endurance a0 endurance can be built up by participating in aerobic exercise.
An agonist will active receptors, causing a physiological response. (Pretty much, it acts like a neurotransmitter). On the other hand, an antagonist will BLOCK a receptor, preventing a neurotransmitter from binding on that receptor, therefore blocking a physiological response.
Agonist --> acts like a neurotransmitter and elicits a responseAntagonist --> BLOCKS a neurotransmitter by binding on to the receptor, therefore blocking a response.
