For which of the following questions would you use the sum law?
A) determining the chance of pulling an ace from a deck of cards
B) determining the change of rolling a 5 on a ten-sided die
C) determining the chance of having a tall plant with purple flowers
D) determining the chance of having a baby girl
E) determining the chance of pulling either a club or a heart from a deck of cards
Answer: E
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You discover a new plant hormone that stimulates cell division. Which experiment will allow you to determine if it is a cytokinin or gibberellin?
A. Determining where in the plant the hormone is produced will allow you to differentiate. B. Determining where the hormone binds its receptor will allow you to differentiate. C. Determining the role of the hormone in plant tissue culture will allow you to differentiate. D. Nothing will allow you to differentiate, these hormones are indistinguishable.
When contaminated with E. coli strains toxic
to humans, fresh meat should be cooked to at least ____ in order to prevent any food intoxication.
a. 71?C (160?F) b. 75?C (167?F) c. 65?C (149?F) d. 85?C (185?F) e. 91?C (196?F)
The methanogenic archaeans are ____
a. aerobes b. facultative anaerobes c. strict aerobes d. facultative anaerobes
e. strict anaerobesWhich of the following is not true of extended-spectrum beta-lactamases (ESBL) and gram negative bacilli?
A) Due to mutations in a bacteria's original chromosome B) Should be included in the susceptibility testing for all of Enterobacteriaceae C) Usually susceptible to carbapenems, cephamycins, and beta-lactamase inhibitors D) ESBLs destroy carboxypenicillins, ureidopenicillins, aztreonam, and cephalosporins