Which one of the following is the photosensitive protein that converts the energy of photons into electrical signals in the receptor cell?
A. opsin
B. retinal
C. chlorophyll
D. organ of Corti
A
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The child of a mother with IAIA blood and father with IAIB blood will have:
A. 25% chance of being IAIA. B. 50% chance of being IAIA. C. 75% chance of being IAIA. D. 25% chance of being IAIB. E. 50% chance of being IBIB.
The membrane potential of a neuron is defined as the ____
a. measured capacity of a neuron to create an electrical impulse b. voltage in the neuron plasma membrane c. threshold potential of a neuron d. the electric gradient across a neuron’s plasma membrane e. amount of voltage it takes to stimulate a neuron to fire
Which genetic condition can be described as the inheritance of the heterozygous phenotype, which is expressed as an intermediate between the dominant and recessive alleles?
A) dominance B) codominance C) incomplete dominance D) epistasis
Streak plates are most useful in
A) isolating individual cells. B) allowing colony morphology to be observed. C) separating different organisms. D) all of the above.