During transcription, __________________.
a) tRNA is used to build a protein
b) mRNA is read to produce a protein
c) mRNA is read to produce DNA
d) DNA is used as a template to make RNA.
d) DNA is used as a template to make RNA.
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Striations are found in:
a. smooth muscle b. skeletal muscle c. cardiac muscle d. both B and C
In cross section, a lymph vessel can be distinguished from arteries or veins because
A) the lymph vessel is usually not associated with arteries or veins, while the latter usually run together. B) of the large number of smooth muscle fibers in the walls. C) only the endothelial cells of the lymph vessel show nuclei. D) the lymphatic vessels have the thinnest walls of all the vessel types. E) the walls of the lymphatic vessels usually contract more during the sectioning and staining process, and usually appear to be smaller than other vessels of a similar size.
The conversion of stimuli into neuron potentials
a. requires an adequate level of stimulus. b. is called transduction. c. stems from generation of receptor potentials. d. all of these answers. e. none of these answers.
In the kidney, blood from a segmental artery next flows into a(n) _____ artery followed by a(n) _____ artery.
A) Arcuate...Interlobar B) Interlobar...cortical radiate C) Cortical radiate...Interlobar D) Interlobar...arcuate