In gel electrophoresis, which of the following DNA fragments would travel the farthest distance from the sample well?
A) ATCCCGAT
B) ATCCCG
C) ATCC
D) AT
E) ATCCCGATTGCACGTT
D
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Which is NOT true about the genetic code?
A. It contains start and stop codons as instructions. B. Each codon consists of three bases. C. The groundwork for cracking the code began with the use of synthetic RNA. D. Most amino acids have only one codon. E. It is composed of triplet codes.
A decrease in blood osmolality directly produces or leads to
A. an increase in ADH production. B. an increase in urine production. C. an increase in blood volume. D. an increase in urine osmolality. E. all of these effects.
How do urea and NaCl influence temperature-induced DNA melting?
What will be an ideal response?
One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?
A. +ssRNA viruses B. dsRNA viruses C. -ssRNA viruses D. retroviruses E. both +ssRNA and -ssRNA viruses