Which one of the following diseases or groups of diseases is not caused by prions?
A) certain plant diseases
B) chronic wasting disease of deer and elk
C) Creutzfeldt-Jacob disease of humans
D) “mad cow disease”
Answer: A
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The cytoplasmic membrane of both eukaryotes and prokaryotes functions to
A. form endoplasmic reticulum. B. produce energy. C. regulate movement of molecules that enter and leave the cell. D. form lysosomes and Golgi apparatus.
In the peripheral nervous system motor neurons
A. go into the central nervous system B. go out of the central nervous system
When a vesicle moves along microtubules toward the center of the cell, the molecular motor(s) ________ are used?
A. kinesin B. Molecular motors are not required for movement along microtubules. C. both kinesin and dynein D. dynein
Boxes 1 and 2 of the figure most likely represent different
A. species.
B. clones.
C. gene pools.
D. communities.