Viral DNA inserted into a chromosome of the host is:
a. A carrier
b. A phage
c. A reservoir
d. A prophage
e. A lytic infection
d. A prophage
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A strain of E. coli is trp? his? lac?. Which medium would this bacterium grow on?
A) minimal medium with lactose as the sugar, supplemented with histidine and tryptophan B) minimal medium with glucose as the sugar, supplemented with histidine and tryptophan C) minimal medium with glucose and lactose as the sugar D) minimal medium with glucose as the sugar
What conditions favor humus buildup?
a. well aerated soil b. low water content soil c. plant-sparse areas such as deserts d. waterlogged soil e. high clay content soil
Which single event is probably common to all occurrences of speciation?
What will be an ideal response?
The main criteria presently used for grouping viruses does NOT include
A) structure. B) chemical composition. C) similarities in genetic makeup. D) host infected.