Taxol is an anti-cancer drug that prevents uncontrolled cell proliferation by stabilizing microtubules, which causes arrest of the cell cycle
If dividing cells are treated with Taxol, at
what stage of the cell cycle would you predict the arrest would occur?
A. prophase
B. metaphase
C. anaphase
D. telophase
E. G1 of interphase
A
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The bacterium that causes tuberculosis can be expelled from the lungs by a cough and remain viable in the air for an hour or more. If a person inhales the bacteria from the air, what type of transmission has occurred?
A) indirect contact B) airborne C) waterborne D) foodborne E) bodily fluid
Fimbriae and pili differ in that
A) there are only one or two pili per cell. B) pili are used for motility. C) pili are used to transfer DNA. D) pili are used for transfer of DNA and motility. E) pili are used for attachment to surfaces.
Molecules made primarily of carbon and hydrogen are called hydrocarbons. How many hydrogen atoms are present in each of the following molecules?
A five-carbon hydrocarbon molecule with four of the carbons linked by a single covalent bond, and with the fifth carbon attached by a single bond as a branch to the second carbon in the chain? A. 6 B. 8 C. 10 D. 12
Are humans responsible for neurotoxic shellfish poisoning? What will be an ideal response?