Biology Exam

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What is the difference in the bonding between alpha-helix and beta sheets?

Hydrogen bonding occurs between the amides of adjacent chains in the sheets instead of between the amides in different parts of the helices.

Proteins are polymers formed of structural units called:

amino acids

Lipids are the only class of macromolecules that contain:

fatty acids

Amino acids are linked together by peptide bonds in a ____

polypeptide

In Alzheimer's disease patients, amyloid plaques develop that contain misfolded beta-amyloid proteins. Based on this observation you would predict that:

the misfolded beta-amyloid proteins could not be refolded by chaperone proteins.

Common lipids for energy storage are:

triglycerides

Three fatty acids bonded together with a glycerol are found in a

trigylcerides


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