What would probably happen if a long neuron had one continuous myelin sheath down the length of the axon with no nodes of Ranvier?
A) The action potential would be propagated nearly instantaneously to the synapse.
B) There could be no action potential generated at the axon hillock.
C) The signal would fade because it is not renewed by the opening of more sodium channels.
C
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The site of new primary growth at the apex of a shoot is the ____
a. terminal bud b. internode c. axil d. lateral bud e. node
Which is a mechanism by which transposable element mobilization may be controlled by the cell? (Select all that apply.)
A) blocking transcription of transposable element genes B) blocking translation of transposable element transcripts C) alternative splicing of transposable element transcripts D) synthesizing an enzyme that removes transposable elements from the genome E) increasing the mutation rate of transposable element DNA sequences
Which of the following terms means the study and comparison of proteins within and among organisms?
A.) genetic engineering B.) proteomics C.) genomics D.) bioinformatics
Which of the following devices is used for PCR?
A) an electrophoresis chamber B) a gene gun C) a DNA sequencer D) a thermocycler E) a nucleic acid synthesis machine