Bacteriology

Retroviruses have: A) One copy of single-stranded RNA B) Two copies of single-stranded RNA C) One copy of double-stranded RNA D) Two copies of single-stranded DNA

The provirus state exists when: A) Double-stranded viral DNA is integrated into host cell chromosome B) Single-stranded viral RNA is integrated into host cell chromosome C) Double-stranded viral RNA is integrated into host cell chromosome D) Single-stranded RNA is present as a plasmid in the host cell E) Double-stranded DNA is present as a plasmid … Read more

If one donor cell is mixed with 20 recipient cells, eventually _ cells will become donors. 2 5 10 15 20

Plasmids are small pieces of DNA that may carry genetic information for antibiotic resistance. True False

The particular virus studied in this research was one that infects E-coli bacteria called: T-4 West Nile Virus Varicella zoster HIV

The mechanism of entry into a host cell involves protein rearrangements in what part of the virus structure? Capsid Base plate DNA Tail Fibers

Donor DNA is combined with recipient DNA by homologous recombination. A) True B) False

What type of microscope has a high enough resolution to examine some viruses? Compound microscope Stereomicroscope Electron microscope Phase contrast microscope

When DNA from an ampicillin-resistant organism is brought into an ampicillin-sensitive organism by transformation and the product is grown on agar containing ampicillin: A) Only the transformed cells will grow B) Only donor cells will grow C) All cells grow D) No cells grow E) Only ampicillin-sensitive cells grow

In transformation, both strands of donor DNA enter the recipient cell. A) True B) False