Atoms with different numbers of which component are considered to be distinct elements?
a. electrons
b. neutrons
c. protons
d. orbitals
c. protons
Atoms with different numbers of protons are considered to be distinct elements.
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An elephant and a mouse are running in full sunlight, and both overheat by the same amount above their normal body temperatures. When they move into the shade and rest, which animal will cool down faster?
A) The elephant will because it has the higher surface-area-to-volume ratio. B) The elephant will because it has the lower surface-area-to-volume ratio. C) The mouse will because it has the higher surface-area-to-volume ratio. D) They will cool at the same rate because they overheated by the same amount.
Contraction of the muscles surrounding an arteriole that decreased its diameter by 50% would
A. increase the resistance in the arteriole approximately 16 fold. B. decrease the resistance in the arteriole approximately 16 fold. C. increase the resistance in the arteriole by approximately 50%. D. decrease the resistance in the arteriole approximately 50%. E. not be expected to change resistance in the arteriole.
The sense of smell
A. can respond to very low concentrations of molecules. B. requires a long time before odors can be perceived. C. responds to four basic shapes of molecules. D. fatigues very slowly.
A cause of epiglottitis in children and young adults is
A. Haemophilus influenzae. B. Haemophilus ducreyi. C. Haemophilus aegyptius. D. Haemophilus parainfluenzae. E. Haemophilus aphrophilus.