A true-breeding red rose is repeatedly mated with a true-breeding white rose, and all of their offspring are red. If two of these red offspring are mated, what percentage of their offspring will be red?
a. 60%
b. 75%
c. 100%
d. 25%
e. 50%
Ans: b. 75%
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In the microdilution broth dilution method, the interpretive criteria for the susceptible, interme-diate, or resistant categories are based on the:
a. quantitative differences (i.e., CFU/mL) in the turbidity in the test well. b. correlation of the MIC with se-rum-achievable levels of the common doses of the antimicrobial agent and the-rapeutic outcomes based on clinical stu-dies. c. either the presence or absence of zones of inhibition. d. FDA's recommendations based on a na-tional database of participating health care agencies providing antibiograms for re-view and publication as a summative re-port.
Would babies need to be immunized against lockjaw (tetanus) if their mother had been immunized against the disease? Why or why not?
A. No-because the mother's IgG antibodies would be passed along through the placenta before birth, protecting the baby from the infection. B. Yes-because even though maternal IgG antibodies might be passed along through the placenta, they will not last forever. The baby will need to create its own antibody response to be protected against future tetanus. C. No-because maternal IgG antibodies would be passed along in the breast milk, protecting the baby from infection. D.
The pigments responsible for the color of red algae are the chlorophylls
Indicate whether the statement is true or false.
Like all fatty acids, oleic acid is extremely hydrophobic. Why?
a. Because the hydrocarbon tails are charged. b. Because long hydrocarbon tails cannot interact with water. c. Because it has a multi-ringed structure. d. None of the above.