Question

1/30 - homeostasis feedback (dg) determine whether the following example is positive (+) or negative feedback (-) and name the body system(s) that are involved. mad cow disease is caused by a prion (an improperly folded version of a protein) which catalyzes the improper folding of other proteins in the brain, generating new prions. these new prions can speed up the change in other proteins. this leads to the formation of long chains of these dangerous prion proteins, holes in the brain, disease and eventually death. which type of feedback does this loop show? which body systems are involved?

Explanation:

Positive feedback amplifies a change, moving a system further from stability. Here, prions create more prions, worsening brain damage until death, which fits positive feedback. The brain is part of the nervous system, which is the involved body system.

Answer:

1. Type of feedback: Positive feedback (+)
2. Involved body system: Nervous system