Proteins

Question 1

Building blocks of proteins

Answer 1

Amino Acids

Question 2

Enumerate the parts of the general structure of Amino Acids

Answer 2

Amino Group
Carboxyl Group
Tetrahedral Alpha Carbon
Hydrogen
Variable Side Chain

Question 3

What is the purpose of the variable side chain in the structure of Amino Acids?

Answer 3

Determines the identity of the Amino Acid

Question 4

Ways to depict amino acids structure. Rules of each.

Answer 4

Geometric Formula/ Stereochemical Rendering (Solid, in front, dashed, at the back)
Fischer Projection (Vertical lines, away, horizontal, toward)

Question 5

Nonsuperimposable images of amino acids

Answer 5

Enantiomers

Question 6

Clockwise rotation of groups in amino acids based on prioritization of the Cahn-Ingold-Prelog System, in the optical activity that rotates incident light.

Answer 6

Dextrorotatory

Question 7

Counter-Clockwise rotation of groups in amino acids based on prioritization of the Cahn-Ingold-Prelog System, in the optical activity that rotates incident light.

Answer 7

Levorotatory

Question 8

Cahn-Ingold-Prelog System

Answer 8

assigns priorities to groups based on atomic number
R rectus right
S sinistrus left

Question 9

Rosanoff/Fischer Projection based on glyceraldehyde

Answer 9

D/L

Question 10

Important in protein folding

Answer 10

Hydrophobic

Question 11

R group with electronegative atom that can form H bonds with water

Answer 11

Pola, uncharged

Question 12

negatively charges amino acids describe

Answer 12

carboxyl group in R group, negative net charge at physiological pH, acidic

Question 13

positive net charge at physiological ph, basic

Answer 13

Positively charged amino acids