1. The viruses that can achieve neoplastic transformation are called

A. DNA tumor viruses
B. RNA tumor viruses
C. retroviruses HIV
D. none of these

2. For gene transfer to be effective, transforming DNA must be

A. incorporated into the bacterial chromosome
B. incorporated into a viral genome
C. free in the bacterial cytoplasm
D. none of the above

3. Double stranded DNA denaturation with specified limit of temperature is

A. reversible reaction
B. irreversible reaction
C. either (a) or (b)
D. none of these

4. From a single molecule of DNA, PCR can make

A. one additional copy
B. hundreds of copies
C. thousands of copies
D. millions of copies

5. Genomic libraries are made from

A. genomic DNA of an organism
B. genomic RNA of an organism
C. genomic cDNA of an organism
D. genomic mRNA of an organism