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Draw a Simple Map of the Lactose Operon Indicating the Relative

question 31

Essay

Draw a simple map of the lactose operon indicating the relative positions of promoter, operator, CRP-binding site, repressor gene (I), and the structural genes of the operon (A, Y, Z). Indicate where the CRP protein binds within this operon. When it is bound to this site, does the CRP protein have a positive or negative effect on gene expression in this system?


Definitions:

Blood Pressure

The force exerted by circulating blood on the walls of the body's arteries, an essential indicator of cardiovascular health.

Endocrine Glands

Glands that secrete hormones directly into the bloodstream, regulating various body functions.

Ducts

Tubes, channels, or passages in the body or in a machine that convey fluid or air from one location to another.

Interstitial Fluid

Fluid that surrounds the body’s cells; consists of dissolved substances that leave the blood capillaries by filtration and diffusion.

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