How doe your parasympathetic nervous system use feedback to keep you healthy? a. it triggers a fight-or-flight response when danger has passed.
b. it dilates your pupils when you are in bright light.
c. it lowers your heart rate after danger has passed
d. it calms you down when you are in danger.

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

If an organ has six haploid chromosomes, how many chromosomes are present. 6 12

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.