There is a loud crash in the room behind you and you jump. which part of your nervous system caused that response/ A. somatic nervous system?
C. central nervous system
D. sympathetic branch
E. parasympathetic branch
My teacher told me b was wrong so that's why it's missing
why are reflexes faster than typical body responses to stimuli?
A. the circuit from stimulus to response travels directly from the spinal column to the brain
B. a reflexive response involves just the somatic system
D. the circuit from stimulus to response doesn't go through the brain first
E. a reflex involves the cranial nerves which operates more quickly than other nerves
new species evolve fro older ones. Why is it difficult to demonstrate this process?
what is the surface are of an alveoli?
How is it possible for a mutation to be beneficial and what happens to it if it is?
A. a mutation by defenition is not beneficial
B. and disappear from the population
It is not possible for a mutation to be beneficial and so the mutated gene will be selected against
C. A mutation that results in a trait that improves an organisms fitness is beneficial and because it has improved fitness that mutated gene will spread in the population
D. A mutation can result in a trait that is beneficial to an individual or its offspring and it will stay within that family
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