protein

Question 1

what are proteins composed of

Answer 1

CHON

Question 2

what are the monomers of proteins

Answer 2

amino acids

Question 3

what is an amino acid

Answer 3

contains the amino group, carboxyl group, and a unique R-side chain (nonpolar/polar/electrically charged)

Question 4

what is a peptide bond

Answer 4

formed by dehydration reaction between 2 amino acid monomers

Question 5

what is the primary structure

Answer 5

linked series of amino acids with a unique sequence

Question 6

what is the secondary structure

Answer 6

folding of the polypeptide chain to form alpha helix or beta-pleated sheets (has two or more strands of the chain) held together via hydrogen bonds

Question 7

what is the tertiary structure

Answer 7

folding of the secondary structure, bonds that are involved between side chains: disulfide bridge, hydrogen bonds, hydrophobic and ionic bonds

Question 8

what is the quaternary structure

Answer 8

several polypeptide chains that bind together, sometimes with other components such as heme, where haemoglobin has 4 polypeptide chains

Question 9

what is denaturation

Answer 9

the unraveling of protein’s structure due to factors such as pH, temperature, or salt concentration