What information is critical to the success of polymerase chain reaction (PCR) itself?
A) The DNA sequence of the ends of the DNA to be amplified must be known.
B) The complete DNA sequence of the DNA to be amplified must be known.
C) The sequence of restriction-enzyme recognition sites in the DNA to be amplified must be known.
D) The sequence of restriction-enzyme recognition sites in the DNA to be amplified and in the plasmid where the amplified DNA fragment will be cloned must be known.
Answer: A
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Which of the following statements about energy from the Sun is correct?
A. the surface temperature of the sun is about 6000 degrees Fahrenheit B. about 4% of the suns radiation is in the visible light spectrum C. on an energy distribution curve, the sun's emissions peak around .5 micrometers D. earth acts as a blackbody because of it's dark color E. the earth emits shorter-wave radiation than the sun
What types of mutants were essential to the discovery of new replication enzymes?
A. Gain-of-function mutations B. Lethal mutations C. Temperature-sensitive mutations D. None of the answers are correct
Interpretation of biochemical tests requires that the microbiologist:
a. correlate the biochemical results with the suspect organism identification. b. correlate the biochemical results with the preliminary direct smear and staining characteristics. c. utilize quality control organisms during interpretation to insure proper functioning of the test protocol. d. all of the above are required.
In Figure 44-4, the arrow most affected by blood pressure changes will be:
a. 1
b. 2
c. 3
d. 5
e. 6