11. which of the following is not an example of an autonomic reflex?
a) extension of the leg when the patellar tendon is struck
b) rise in blood pressure when shifting from a sitting to a standing position
c) increased movement of the stomach when thinking about a favorite food
d) dryness in the mouth when extremely frightened
e) opening the urethral sphincter so that urine can drain from the bladder

What are the four basic classes of organic molecules how do they differ structurally and functionally

Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

What occurs to the cell during mitosis