In the scientific method, what precedes the formation of the hypothesis?

Which level of protein structure do the α helix and the β pleated sheet represent?

Research indicates that ibuprofen, a drug used to relieve inflammation and pain, is a mixture of two enantiomers; that is, molecules that

Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?

The nucleus of a nitrogen atom contains 7 neutrons and 7 protons. Which of the following is a correct statement concerning nitrogen?

If one strand of a DNA molecule has the sequence of bases 5’ATTGCA3′, the other complementary strand would have the sequence

Membrane-bounded vesicles that contain enzymes that break down fatty acids while producing hydrogen peroxide as a waste product are called

Which of the following statements about the area of tissue heated by a superficial heat source is true?

A patient is an 18 y/o male with an acute ankle sprain.  It is edematous and painful to touch.  Which of the following is the most appropriate treatment to reduce pain, inflammation and swelling?

Which of the following describes an effective strategy to increase muscle length?