A)Describe by Labeled Diagram the Structural Components of the Lac

question 12

Essay

a)Describe by labeled diagram the structural components of the lac operon in E.coli.
b)State the function of the lac regulator gene.
c)State the function of fi- galactosidase in the lac system.
d)Show by diagram the manner in which lactose brings about transcription of the three structural genes of the operon.
e)Explain why certain mutations in the regulator gene I^-)of the lac system result in maximal synthesis of
fi- galactosidase,permease,and transacetylase even in the absence of the inducer lactose).

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Definitions:

Refrigerants

Substances used in heating, ventilation, air conditioning, and refrigeration (HVAC/R) systems, responsible for absorbing and removing heat to facilitate cooling or refrigeration.

Cooling Capacity

The amount of heat energy that a cooling system (such as an air conditioner or refrigerator) can remove from a specific area within a certain time period.

Refrigerated Van

A refrigerated van is a vehicle designed with insulation and a cooling system to transport perishable goods at controlled temperatures.

Cryogenic Reefers Units

These are refrigeration units used for transporting perishable goods at extremely low temperatures, often utilizing liquid nitrogen or carbon dioxide as cooling agents.