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

question 8

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 β-galactosidase in the lac system.
(d)Show by diagram the manner in which lactose brings about transcription of the three structural genes of the lac operon.
(e)Explain why certain mutations in the regulator gene (I-)of the lac system result in maximal synthesis of β-galactosidase,permease,and transacetylase even in the absence of the inducer (lactose).

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Definitions:

Cranial Nerves

Twelve pairs of nerves that originate in the brain and serve various sensory and motor functions of the head and neck.

Glossopharyngeal Neuralgia

A condition characterized by recurrent episodes of severe pain in the 9th cranial nerve area.

Bilateral CTS

Carpal Tunnel Syndrome affecting both hands, characterized by numbness, tingling, and pain due to median nerve compression.

Spinal Nerves

Nerves that originate from the spinal cord, carrying motor, sensory, and autonomic signals between the spinal cord and the body.