chem ch 16

animal starch is called

glycogen

which of the following elements is not found in carbohydrates

nitrogen

which of the following is a monosaccharide

glucose

the polysaccharide that is in potatoes and cereal grains is

starch

which of the following is a polysaccharide

starch

the monomer unit in amylopectin is

glucose

an example of a disaccharide is

sucrose

which of the following polymers is not made by plants

glycogen

unsaturated fats are often liquids called

oils

a fatty acid is determined to have 12 carbon atoms. this fatty acid is probably from a

natural source

fats and oils are examples of

esters

fats and oils are differentiated from each other on the basis of their

melting points

triglyceride is another term for

a fat or oil

animal fats are

solids and have a smaller proportion of unsaturated fats

what functional group is contained in an amino acid

both -NH2 and -COOH

what is a zwitterion

a compound that carries one positively charged atom and one negatively charged atom

proteins are

polyamides

a relatively small molecule with more than 10 amino acids is called a

polypeptide

the primary structure of a protein is determined by

the order of the amino acids in the protein

the secondary structure of a protein is determined by

the hydrogen bonding between atoms in peptide bonds that gives the protein a three dimensional shape

the helical structure of certain proteins, such as wool, is part of the proteins

secondary structure

the pleated structure of certain proteins, such as silk, is part of the proteins

secondary structure

an alpha helix contains

intramolecular hydrogen bonding

a bets pleated sheet

contains hydrogen bonding between chains

the interactions between different chains in a protein contribute to its ______ structure

quaternary

which of the following is not involved in determining the tertiary structure of a protein?

ester bonds

enzymes are

catalysts

the portion of an enzyme where the substrate fits during the reaction is called the

active site