Before the mRNA transcribed from a gene can be used for translation into a protein, it must be:
A) folded into its proper three-dimensional configuration.
B) modified to remove introns, exons spliced together, and transported into the cytosol.
C) coated with phospholipids for transport out of the nucleus.
D) modified to remove exons, introns spliced together, and transported to a tRNA molecule.
Answer: B
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The vocal apparatus of birds is the ________________
Fill in the blank(s) with correct word
All of the following are typical characteristics of neurotransmitters exceptÂ
A. they alter the physiology of the postsynaptic cell. B. they bind to specific receptors on the postsynaptic cell. C. they are synthesized by a presynaptic neuron. D. they are released in response to stimulation. E. they are released into the bloodstream before reaching the postsynaptic cell.
All of the following terms mean eye except which one?
A. ophthalm/o B. scler/o C. ocul/o D. opt/o
Motor pathways extending from the central nervous system to muscle fibers are subject to control by both excitatory and inhibitory interneurons.
Answer the following statement true (T) or false (F)