In most human populations, lactase levels are highest soon after birth and drop off in middle-to-late childhood

a. True
b. False
Indicate whether the statement is true or false


True

Biology & Microbiology

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All RNAs are made by the same process and have the same size. Indicate whether the statement is true or false

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If a person has a diet high in saturated fats, ________ molecules can carry cholesterol from the liver to cells and to the arterial walls, whereas ________ transports cholesterol from the cells to the liver, where it is converted to bile salts which can modulate cardiovascular function.

A. LDL; insulin B. HDL; trans-fats C. LDL; HDL D. HDL; LDL

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The product detected in a positive Voges-Proskauer test is:

A. Creatine B. 2,3-butanediol C. Indole D. Acetoin

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