Midterm Exam

Primary

Denaturation of proteins lead to what level of organization?

Combination of two functional groups

Synthetase
Ligase

Citric Acid Synthetase

Class VI

I.    Amino Acid

II.   Zwitterion

It refers to a molecule that contains both a positive and negative charge:

Transfer of functional groups
Transferase
Kinase
Protein kinase

Class II

Involves transfer of electrons
Oxidoreductase

Oxidase

Catalase
Dehydrogenase

Class I

Brown

Tannic acid yields what color of precipitate upon contact with proteins?

Pepsin - Digestive enzyme
Hydrolase
Estrase
Deaminase

Class III

Isomerism/Isomerase
Mutase

Class V

α-1,4

Ptyalin breaks down what glycosidic bond in starch?

violet

Presence of peptide bonds yield (?) color

NH2+

Cl^- of HCl would most likely attack what part of an amino acid?

Add/remove groups to/from a double bond
Lyase

Decarboxylase

Class IV

Xanthine oxidase

Schardinger Enzyme

acids

Heller’s test determines denaturation of proteins by what substance?

Red-brown

Reducing sugars yield a (?) precipitate in Benedict’s reagent

70%

What percent ethanol does rubbing alcohol contain?

O₂

Addition of H₂O₂ to proteins produce bubbles due to formation of

blue

Starch yield (?) color upon addition of iodine

37°C

The optimal temperature for most enzymes

Glucose

What is the final hydrolytic product of starch?

Apoenzyme

The protein part of an enzyme

blue

Benzidine test yields what color?