A short-lived contraction of the cells in a motor unit is known as a
a. muscle twitch.
b. tetanus response.
c. spasm.
d. contracture.
e. treppe.
A
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The enzyme responsible for joining Okazaki fragments together during DNA replication is
A. DNA polymerase. B. helicase. C. topoisomerase II. D. DNA ligase. E. DNA replicase.
If a person had defective centromeres, which
of the following would result?
a. the DNA would not coil around histones b. DNA could not duplicate c. sister chromatids could not attach to each other d. the chromosome number would be reduced e. none of these would result
Photoreceptors are found in the
a. lens. b. ciliary body. c. iris. d. retina.
The ____ are a group of fungi with hyphae that grow inside the wall of plant root cells.
A. ascomycetes B. zygomycetes C. microsporidia D. basidiomycetes E. glomeromycetes