Myosin 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 intermediate filaments to
contract muscle cells.
B
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Which naturalist first proposed the theory of
catastrophism?
a. Lyell b. Lamarck c. Darwin d. Cuvier e. Aristotle
Which term refers to the renewal of a natural ecosystem that has been degraded?
a. ecological balance b. ecological restoration c. eutrophication d. biological magnification e. bioremediation
Describe the steps in the polymerase chain reaction (PCR). What will be an ideal response?
The organelle involved in intracellular digestion of food particles is the
A. smooth endoplasmic reticulum. B. transitional vesicle. C. mitochondria. D. lysosome. E. Golgi apparatus.