When a prion enters a healthy organism, it induces existing, properly folded proteins to convert into the misfolded prion form. In this way, the prion acts as a template to guide the misfolding of more proteins into prion form. In yeast, this refolding is assisted by chaperone proteins such as Hsp104. These refolded prions can then go on to convert more proteins themselves, leading to a chain reaction resulting in large amounts of the prion form.
Dopamine is a neurotransmitter that is related to the positive feedback/reward system of mammal brains. Higher amounts of dopamine released in response to any stimulation will result in a stronger desire to recreate that stimulus. One could say that the extra dopamine released during drug use causes the brain to desire using the drug again to receive that same pleasurable reward sensation. <span />
It can be a pattern of circular field lines surrounding a wire or it can be like a compass a long straight line current-carrying wire in.
Answer:
speed=distance÷time
2m/s,1.5m/s,1.25m/s,0.5m/s
Explanation:
speed=distance÷time
20/10=2m/s
30/20=1.5m/s
50/40=1.25m/s
30/60=0.5m/s