If you lose your sensitivity to the sound of the waves but still notice a seagull flying above you, what is happening?
A. sensory adaptation in sight involving thermoreceptors
B. sensory adaptation in sight and hearing involving mechanoreceptors
C. competition between processing of hearing and sight involving light receptors
D. sensory adaptation in hearing involving mechanoreceptors
E. general sensory diminution involving mechanoreceptors and thermoreceptors
D. sensory adaptation in hearing involving mechanoreceptors
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Harrison and van Buuren identified a phosphate transport protein in Glomus, which is a ____
a. carnivorous plant b. bacterium that parasitizes plants c. mycorrhizal fungus d. bacteroid e. parasitic plant
Energy is important to life forms because
A) all life forms require a continuous supply of energy. B) energy is required to do work. C) energy is required to make specific alterations in the cell. D) all life forms require a continuous supply of energy and energy is required to do work. E) all life forms require a continuous supply of energy, energy is required to do work, and energy is required to make specific alterations in the cell.
There is a mutation in the operator of the trp operon in a cell such that the trp repressor is unable to bind to the operator. If tryptophan is added to the cell, what will happen?
A) Tryptophan will bind to the repressor, and trp enzymes will be produced. B) Tryptophan will bind to the repressor, and trp enzymes will not be produced. C) Tryptophan will not bind to the repressor, and trp enzymes will be produced. D) Tryptophan will bind to the operator, and trp enzymes will be produced.
In mice, the gene for insulin-like growth factor is imprinted. During embryonic development, only the paternal allele for insulin-like growth factor is expressed. This means
A. that the paternal allele is imprinted. B. that the maternal allele is imprinted. C. that the paternal allele is mutated. D. that the paternal allele is hyper-methylated. E. that the maternal allele is expressed.