The Model Virus Bacteriophage λ (Lambda) Has Been Used Extensively

question 97

Multiple Choice

The model virus bacteriophage λ (lambda) has been used extensively to study the lysogenic mechanism.The virus genome includes genes that encode the regulator proteins cI and Cro, which compete for specific promotors on the viral DNA-including their own promotors.Cro and cI have opposite effects on each promotor: cI represses the expression of genes involved in the lytic cycle and promotes expression of genes involved in lysogeny, whereas Cro does the opposite.Suppose a mutation in Cro increases its expression.This mutation would make entering lysogeny _______ likely.A mutation that increases the expression of cI would have _______ effect on the likelihood of the virus entering lysogeny.

• A) more; a similar
• B) more; no
• C) more; the opposite
• D) less; a similar
• E) less; the opposite

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Definitions:

Centralized Structure

An organizational structure where decision-making authority is concentrated at the top level, and lower levels have limited power.

Communication Pathways

The routes through which information is transmitted and received within an organization or network.

Decision Making

The process of making choices by identifying a decision, gathering information, and assessing alternative resolutions.

Resource Allocation

The process of distributing available resources among varying demands or projects.