microRNA is ________.
A. partially complementary to many mRNAs
B. complementary to a particular mRNA
C. produced in large numbers by tumor cells
D. single-stranded
Answer: A
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Deflection of the basilar membrane
a. activates the receptors of the organ of Corti. b. occurs in response to fluid movements in the cochlea. c. results from displacement of the round window. d. both activates the sound receptors of the organ of Corti and occurs in response to fluid movements in the cochlea are correct. e. all of these answers.
A patient with high blood pressure is put on a vasodilator, which causes blood vessels to dilate. One of the side effects will be pale, cool skin.
Answer the following statement true (T) or false (F)
A duplicated chromosome is held together at its central region called its
A. centriole. B. centromere. C. histone. D. centrosome.
The gray matter of the cerebrum is composed of neuron cell bodies and makes up both the ________ and the ________.
A. cortex; deep cerebral nuclei B. cerebral tracts; cortex C. cortex; white matter