Answer:
When an E.coli cell is infected by multiple phages,they will take either lytic or lysogenic pathway.
Explanation:
When lambda phage bacteriophage infects an E.coli,it can either undergo lytic cell growth and lyse the host cell or enter lysogenic pathway.
The operator region of lac operon in E.coli contain single repressor binding site whereas the lambda operators 
and 
each contains 3 repressor binding sites (
and 
) that are differently occupied under different conditions.
The differential affinity of lambda repressor for the three binding sites in these operators play an important role in the maintenance of lysogenic state of lambda prophage in E.coli.
The lytic development occurs in cells infected with lambda phage that carry 
gene.
In contrast,lysogeny will occur in bacteria that infected with lambda phage that harbor a deletion of Cro gene.
Answer:
B. To provide energy for the bass and snapper turtles
Answer:
A. To reproduce
Explanation:
Cells divide in two stages: Meiosis - haploid cell division [½ number of chromosomes], and Mitosis - diploid cell division [same number of chromosomes]. Their objective is to produce offspring, which means reproduce.
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Answer: D. Dams create water recreation areas.
Explanation:
Dams are electricity generation sites which use a large water body reservoir.
D. Dams create water recretion areas is the correct option because dams utilize turbines to generate electricity. The movement of the turbines helps in circulating water which prevents the growth of algae hence, helps in keeping the water fresh.
