Geoff Wants to Lower His Risk of Cancer

question 44

Multiple Choice

Geoff wants to lower his risk of cancer.According to scientific studies,consuming ________ may decrease his risk of this chronic disease.

• A)dark beer
• B)charcoal-grilled meat
• C)fresh fruits and vegetables
• D)margarine

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Definitions:

Dextrorotatory

Describes a substance that rotates the plane of polarized light to the right, or clockwise, as seen by an observer towards the light source.

Levorotatory

Describing a substance that rotates the plane of polarized light to the left or counterclockwise.

Racemic Mixture

A mixture containing equal amounts of left- and right-handed enantiomers of a chiral molecule, making it optically inactive.

Enantiomer

One of a pair of molecules that are mirror images of each other and cannot be superimposed, often possessing different biological activities.