pH and Protein folding

Question 1

Primary level

Answer 1

peptide bonds between amino acids(OH in carboxyl group and H in amino group). It is the base of polypeptide chains.

Question 2

Secondary level

Answer 2

hydrogen bonds between remaining H in the amino group and remaining O in the carboxyl group. It causes the chain to fold into a beta pleated sheet and alpha helix.

Question 3

Tertiary level

Answer 3

Hydrogen bonds, disulfide bridges, VDW and ionic bonds occur between amino side chains in one polypeptide chain.

Question 4

Quaternary level

Answer 4

multiple polypeptide chains create hydrogen bonds, disulfide bridges, VDW and ionic bonds between each other. This is a protein.

Question 5

denaturization

Answer 5

caused by change in temperature or pH. The only level left is the primary structure because they are held together using covalent bonds(peptide).

Question 6

pH scale

Answer 6

measure of potential H+ concentration. It goes from 0-14 (0 is acidic 14 is basic)

Question 7

pH 7

Answer 7

“pure” water. amt of H+ = OH-

Question 8

acids

Answer 8

pH 0-6.9. More H+.

Question 9

examples of an acid

Answer 9

hydrochloric acid-strong acid

Question 10

bases

Answer 10

pH 7.1-14. More OH-.

Question 11

examples of bases

Answer 11

sodium hydroxide-strong and ammonia-weak

Question 12

buffer

Answer 12

keep pH of solution the same by accepting or giving hydrogen ions

Question 13

solution

Answer 13

the combination of the solvent and solute(salt water)

Question 14

solvent

Answer 14

thing that dissolves (usually water)

Question 15

solute

Answer 15

thing that gets dissolved (salt in water)