quiz #3 (biology)

what are the four categories of organic molecules which form the basis of all living organisms?

what is a polymer?

• large molecule made of many atoms

• a long chain molecule made of many smaller molecules

• small molecule made of one atom

• small molecule made of atoms

which level of protein structure do the a-helix and b-pleated sheet represent?

• quaternary

• secondary

• primary

• tertiary

what kind of molecule is represented by the structure below?

• polysaccharide

• steroid

• unsaturated hydrocarbon

• saturated hydrocarbon

in the formation of polypeptides, what type of reaction would join two subunits together?

• hydrophobic

• hydrophillic

• hydrolysis

• dehydration

how do phospholipids interact with water molecules?

• they dissolve in water

• polar heads avoid water, nonpolar attract

• polar heads interact w/ water, non polar tails avoid water

• phospholipids hate water both ways

glycogen is a polymer...

• structural component of animals

• amino acids

• used for energy storage in animals

• made by plants

what are the four different DNA bases?

proteins are polymers made up of which of the following monomers?

• nitrogenous bases

• nucleotides

• sugar

• amino acids

the function of DNA

• encoding information

• storage of energy

• cellular structure

• production of energy