What difference in axonal signaling determines whether we experience a mild or a strong sensation?
A. Action potential threshold
B. Conduction speed
C. Amount of neurotransmitter released per vesicle
D. Frequency of action potentials
E. Amplitude of action potentials
Answer: D
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Sodium chloride (NaCl) in water can be described by
any EXCEPT which of the following? a. Na+ and Cl– form b. a solute c. ionized d. forms a hydrophobic interaction e. dissolved
Which of the following is most inclusive?
a. family b. phylum c. species d. class e. order
Which of the following pairs of protists and their characteristics is mismatched?
A) apicomplexans — internal parasites B) euglenozoans — unicellular flagellates C) ciliates — red tide organisms D) entamoebas — ingestive heterotrophs
Which of the following best illustrates the first law of thermodynamics by Niagara Falls?
a. Water at the top of the falls has high kinetic energy; as the water moves over the waterfall, its kinetic energy is converted into potential energy; when the water reaches the bottom of the waterfall, its potential energy is transformed into other types of energy: heat, sound, and mechanical energy. b. Water at the top of the falls has high potential energy; as the water moves over the waterfall, its potential energy is converted into kinetic energy; when the water reaches the bottom of the waterfall, its kinetic energy is transformed into other types of energy: heat, sound, and mechanical energy. c. Water at the top of the falls has high potential energy; as the water moves over the waterfall, its potential energy is converted into kinetic energy; when the water reaches the bottom of the waterfall, its kinetic energy is transformed into potential energy again. d. Water at the top of the falls has high potential energy; as the water moves over the waterfall, its potential energy is converted into kinetic energy; when the water reaches the bottom of the waterfall, its kinetic energy is lost.