What is a positive feedback loop? a) something that carries out a response
b) the output of a system stimulates another cycle of the system
c) a closed path that tends to reduce the activity of a body system
d) anything that causes a reaction or response

D

Explanation:

it is a process that occurs in a feedback loop which exacerbates the effects of a small disturbance

The output of a system stimulates another cycle of the system

Explanation:

This happens when the effect of a pathway is picked up by the sensor and the sensor tells the system to start the pathway over again.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus