At about what age does the tension, or physical force, a person's muscles can muster begin to

decrease?
a. 30
b. 25
c. 40
d. 45
e. 50


A

Biology & Microbiology

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Which statement is NOT correct about the lac operon?

A. It regulates the production of a series of five enzymes. B. It is normally turned off if glucose is present. C. It is an inducible system. D. The structural genes make products that allow lactose metabolism. E. Lactose binds to the repressor protein and inactivates it.

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Atmospheric CO2 levels have increased approximately ________ since the beginning of the Industrial Revolution

a. 5% b. 10% c. 20% d. 40%

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Describe the process by which gut epithelial cells use transporters to take up ingested glucose (against the concentration gradient) and to distribute glucose to other tissues by moving it back out of the cell (down the concentration gradient)

What will be an ideal response?

Biology & Microbiology