A cluster of birth defects, including abnormal facial characteristics, slow physical growth, and retarded mental development is associated most closely with which of the following?

a) toxoplasmosis
b) fetal alcohol effects
c) polychlorinated biphenyls (PCBs)
d) fetal alcohol syndrome


Answer: d) fetal alcohol syndrome

Biology & Microbiology

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What term describes the unwinding and changes in the shape of a protein?

a. Denature b. Metabolism c. Condensation d. Hydrolysis e. Breakdown

Biology & Microbiology

The sum of all chemical reactions occurring in the body is termed

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Biology & Microbiology

Which contains the greatest amount of potential energy? 

A. C6H12O6 (glucose) B. C48H82O41 (complex carbohydrate) C. CH3CH2COOH (pyruvic acid) D. CO2 (carbon dioxide)

Biology & Microbiology

What effect of mass extinctions is described by the expression "dead clade walking?"

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Biology & Microbiology