One of the two main functions of the nuclear envelope is to ____.
A. provide residence for ribosomes
B. allow separation of DNA from cytoplasm machinery
C. provide total isolation of nuclear components
D. enable faster cell division
E. enable larger cell size
Answer: B
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Epithelial cell shapes and arrangements include: (check all that apply)
_____ columnar. _____ stratified. _____ symmetric. _____ rod shaped. _____ transitional.
A population with zero growth is indicated by
a. A. b. B. c. C. d. D. e. none of these
Cancer-causing mutations of the cell cycle ____
a. increase the speed of the cycle b. cause the cell to bypass checkpoints in the cycle c. eliminate one or more stages of the cycle d. interfere with S phase of the cycle e. stop the cycle and cause a build-up of cell toxins
Organisms are composed of molecules, which are collections of smaller units, termed
A. polymers. B. electrons. C. ions. D. monomers. E. atoms.