How might you choose a region of DNA for a PCR primer so as to increase the temperature necessary for primer annealing (to minimize nonspecific PCR products)?
What will be an ideal response?
look for higher GC concentrations
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In prokaryotes, the 30S pre-rRNA transcript is cleaved into:
A. two rRNAs. B. three RNAs. C. two rRNAs and tRNA. D. three RNAs and tRNA. E. multiple copies of three specific RNAs plus tRNA.
Which statement is an accurate interpretation of the outcome in an ecosystem when a major predator is removed?
A. The remaining community adjusts and quickly becomes stable. B. The diversity of the ecosystem actually increases. C. The diversity of the ecosystem decreases since there is an increase in competition. D. The diversity of the ecosystem decreases because parasites become more of a problem. E. The diversity of the ecosystem decreases because new herbivores move in.
The inability of T and B cells to recognize the body’s MHC markers as foreign is known as ____
a. immunological tolerance b. immune intolerance c. immune surveillance d. immunity bias e. autoimmunity
The yeast used in making bread, beer, and wine is
A. Leuconostoc mesenteroides. B. Propionibacterium. C. Saccharomyces cerevisiae. D. Streptococcus lactis and Lactobacillus. E. Spirulina.