Which flower provides the anticancer drugs vincristine and vinblastine?
a. four-o'clock
b. sunflower
c. petunia
d. rosy periwinkle
e. rose
D
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Match the following items with the correct phrases.
_______1. Although Neisseria gonorrhoeae and Haemophilus influenzae will not grow on blood agar, they will grow on ____________________. _______2. ____________________ is a highly enriched and highly selective medium, used to isolate Neisseria gonorrhoeae from clinical specimens. _______3. ____________________ is an example of a medium that is both enriched and differential. _______4. ____________________ is selective for Gram-positive bacteria. _______5. ____________________ is an example of a medium that is selective and differential. a. blood agar b. chocolate agar c. MacConkey agar d. phenylethyl alcohol agar e. Thayer-Martin agar
How long ago did Neanderthals go extinct?
a. 30,000 years ago. b. 100,000 years ago. c. 500,000 years ago. d. 1 000,000 years ago. e. 2,000,000 years ago.
Bacteria divide asexually by mitosis
__________________ Indicate whether the statement is true or false.
The interaction of the alpha and beta subunits to form the hemoglobin molecule is an example of _______ structure.
a. primary b. secondary c. tertiary d. quaternary