The "Tails" of the molecules in the figure orient away from water. Which of the following describes the tail's movement away from water?

Of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________.

Two amino acids of the standard 20 contain sulfur atoms. They are:

All of the amino acids that are found in proteins, except for proline, contain a(n):

Which of the following statements about aromatic amino acids is correct?

Which of the following statements about cystine is correct?

Which of the following molecules make up the basic structure of a cell membrane?

Amino acids are ampholytes because they can function as either a(n):

For amino acids with neutral R groups, at any pH below the pI of the amino acid, the population of amino acids in solution will have:

At pH 7.0, converting a glutamic acid to -carboxyglutamate, will have what effect on the overall charge of the protein containing it?

At pH 7.0, converting a proline to hydroxyproline, will have what effect on the overall charge of the protein containing it?

The formation of a peptide bond between two amino acids is an example of a(n) ______________ reaction

The peptide alanylglutamylglycylalanylleucine has:

An octapeptide composed of four repeating glycylalanyl units has:

Which of the following is correct with respect to the amino acid composition of proteins?

The average molecular weight of the 20 standard amino acids is 138, but biochemists use 110 when estimating the number of amino acids in a protein of known molecular weight. Why?

In a conjugated protein, a prosthetic group is:

Prosthetic groups in the class of proteins known as glycoproteins are composed of:

For the study of a protein in detail, an effort is usually made to first:

By adding SDS (sodium dodecyl sulfate) during the electrophoresis of proteins, it is possible to:

To determine the isoelectric point of a protein, first establish that a gel:

Which of the following is not a function of polysaccharides?

Which of the following statements is false?

Which of the following molecules stores hereditary information?

What is the name of the molecule in plants that stores sugars?