When glucose is high, cAMP is low; CAP does not bind the lac operator, and RNA polymerase does not bind the lac promoter. CAP is only active when glucose levels are low, which means the cAMP levels are high, and therefore the lac operon can only be transcribed at high rate when glucose is absent. The importance of this is that the bacteria only turns on the lac operon and start using lactose only after they have used up all the preferred energy source which is glucose.

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3 years ago

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How do structures and functions of organisms vary in different kingdoms????

Alexxx [7]

Answer:

With millions of different kinds of organisms in the world, scientists must find order in all of this diversity. Scientists group living organisms into one or more of a few major categories as part discipline known as taxonomy. The bodies of organisms are organized into functional systems—cells are organized into tissues, and tissues are organized into organs. Body systems carry out critical functions, such as locomotion, reproduction, digestion, and circulation. All living things on Earth are composed of the same carbon-based, molecular building blocks.

$\bf \huge \red{F} \bf \pink{O}\bf \purple{L}\bf \blue{L}\bf \green{O}\bf \red{W} \: \bf \pink{x} \bf \purple{I} \bf \blue{t} \bf \green{z} \bf \red{M} \bf \pink{u} \bf \purple{s} \bf \blue{k} \bf \green{x}$

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3 years ago