Protease inhibitors:a
inhibit the action of reverse transcriptase.
b. are glycoproteins found in saliva.
c. result in viral copies that cannot infect new cells.
d. can cure AIDS patients.
e. destroy helper T cells.
ANSWER: c
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The primary difference between individual nucleated cells in a developing zygote is the ____
a. genetic code of each cell b. differential expression of housekeeping genes c. differential expression of regulated genes d. number of chromosomes present in the nucleus e. presence or absence of gene regulators
To engulf a bacterium, a white blood cell
would use
a. facilitated diffusion b. osmosis c. phagocytosis d. exocytosis e. sodium-potassium pumps
What is gene therapy and why hasn't it been successfully developed for the treatment or cure of human genetic diseases to date? What new technique may help advance gene therapy in the future?
What will be an ideal response?
To make information travel faster through your body, your neurons ________.
a. are very large b. are wrapped with myelin c. are made of gray matter d. all those