Dynein motor proteins use ATP energy to:
A. carry vesicles along a microtubule within a
cell in a minus-to-plus direction.
B. carry vesicles along a microfilament within
a cell in a minus-to-plus direction.
C. carry vesicles along a microtubule within a
cell in a plus-to-minus direction.
D. carry vesicles along a microfilament within
a cell in a plus-to-minus direction.
E. slide along microfilaments to contract
muscle cells.
C
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The lowest concentration of an antibiotic that prevents growth is the
A. 50% inhibitory dose. B. minimal inhibitory concentration (MIC). C. minimal lethal concentration (MLC). D. All of the choices are correct.
Ionizing radiation both causes cancer and can be used to treat cancer.
Answer the following statement true (T) or false (F)
What type of microscopy allowed scientists to visualize the cytoskeleton in living cells?
A) transmission electron microscopy B) scanning electron microscopy C) fluorescence microscopy D) light microscopy
Cells placed in a hypotonic solution _____
shrink swell do not change volume there is no way to determine this