Imagine you accidently step on a sharp object with your bare foot.

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus
Which of the following did you include in your response? Check all that apply.
ANSWER BELOW!
Receptors in the skin stimulate sensory neurons.

Sensory neurons send messages to the central nervous system.

Interneurons send messages to the motor neurons in response to messages received from sensory neurons.

Motor neurons cause muscles in the leg to contract and pull the foot away.

2. if scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to? a. roundworms b. annelids c. mollusks d. flatworms

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?