One of the most common causes of mental retardation in the United States is

a. congenital rubella syndrome.
b. cocaine addiction.
c. fetal alcohol syndrome.
d. use of thalidomide by pregnant women.
e. use of tetracycline by pregnant women.


C

Biology & Microbiology

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In what part of the cell cycle does an actively

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a. G1 b. S c. G2 d. prophase e. more than one of these

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Which of the following is an inorganic charged

particle found in soil?

a. humus b. clay c. sand d. silt e. all of these are charged inorganic soil particles

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By the end of this century, it is estimated that the emission of CO2 will be double that of preindustrial levels

Indicate whether the statement is true or false

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When developing a monoclonal antibody-based test kit, great care must be taken to choose an antibody with the right binding properties. Imagine that you are developing a food-testing kit to specifically detect E. coli 0157:H7, a pathogenic serotype of E. coli that causes food poisoning. Choose the hybridoma line best suited for use in your test kit.hybridoma line E. coli 0157:H7 E. coli K-12 MG1655 E. coli 0150:H5 E. coli 0152:H28 1 +++ - +++ - 2 - ++ ++ + 3 ++ - - - 4 +++ ++ ++ ++ 5 + +++ - - 

A. 1 B. 2 C. 3 D. 4 E. 5

Biology & Microbiology