Module 2 -F324

Question 1

Peptide

Answer 1

A peptide is a compound made of amino acids linked by peptide bonds.

Question 2

Zwitterion

Answer 2

A zwitterion is a dipolar ionic form of an amino acid that is formed by the donation of a hydrogen ion from the carboxyl group to the amino group. Because both charges are present, there is no overall charge.

Question 3

Isoelectric point

Answer 3

The isoelectric point is the pH value at which the amino acid exists as a zwitterion.

Question 4

Condensation reaction

Answer 4

A condensation reaction is one in which two small molecules react together to form a larger molecule with the elimination of a small molecule such as water

Question 5

Hydrolysis

Answer 5

Hydrolysis involves the breaking of a bond by reaction with water. Hydrolysis can be catalyzed by acid or alkali.

Question 6

Stereoisomers

Answer 6

Stereoisomers are species with the same structural formula but with a different arrangement of the atoms in space.

Question 7

Chiral carbon

Answer 7

A chiral carbon is a carbon atom attached to four different atoms or groups of atoms

Question 8

Optical isomers

Answer 8

Optical isomers are stereoisomers that are non- superimposable mirror images of each other.

Question 9

Repeat unit

Answer 9

The repeat unit is the specific arrangement of atoms that occurs in the structure over and over again. Repeat units are included in brackets, outside which is the letter n.

Question 10

Biodegradable polymer

Answer 10

A biodegradable polymer is a polymer that breaks down completely into carbon dioxide and water.

Question 11

Degradable polymer

Answer 11

A degradable polymer is a polymer that breaks down into smaller fragments when exposed to light, heat or moisture.

Question 12

Pharmacological activity

Answer 12

Pharmacological activity is the beneficial or adverse effects of a drug on living matter.