Why is it important for sound vibrations to be amplified as they pass through the ear?
A. The inner membrane gets less sensitive with age.
B. More force is needed to create waves in fluid.
C. Much of the vibration is lost in the eardrum.
D. Too much is lost through friction.
Answer: B
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Autism spectrum disorder used to include all of the following EXCEPT:
a. autistic disorder b. Asperger syndrome c. atypical autism d. low-functioning autism
The active ingredient in marijuana is called ____ and is found in ____.
A. xanthine; cannabis roots B. anandamide; cannabis leaves C. THC; cannabis leaves D. xanthine; cannabis leaves
Older adults in our society who are contemplating suicide are
a. likely to fail to complete the suicidal act once they have undertaken the attempt b. unlikely to be deliberate in their suicidal behavior c. likely to ask for help that might alter their decision d. all of these e. none of these
An explanation for the widespread storage of memories is that ____________
a. the hippocampus is one of the most easily damaged areas of the brain b. several different senses may be involved in memory c. some specific parts of the brain are necessary for the formation of memory d. the memory center is located in the parietal lobes of both cerebral hemispheres