Proteins

What is the primary structure of a protein?

• Linear sequence of amino acids within a polypeptide

• Overall 3-dimensional shape achieved by the folding of entire protein molecule

• A more extended conformation than the α-helix

• A corkscrew structure

Which of the following is not a factor that may cause denaturation of proteins?

• Increased digestion

• Freezing

• Heat

• pH change

How many essential amino acids are needed by the human body?

• 11

• 9

• 5

• 20

What is the function of collagen in the body?

• Set dessert and thicken meat sauces

• Form cells like blood, hair, and nails

• Speed up chemical reaction in food processing

• Transport lipid in blood

Which amino acid is essential only in certain cases such as for children?

• Glycine

• Valine

• Histidine

• Proline

Which type of protein structure describes the overall 3-dimensional shape achieved by the folding of entire protein molecule?

• Primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

How many levels of structure does protein have?

• 1

• 2

• 3

• 4

alpha helix and beta helix structure is under ____________ structure.

• Primary

• Secondary

• Tertiary

• Quaternary

What processes are involved, as shown in the given picture?

• Denaturation

• Gelatinization

• Coagulation

• Maillard reaction

Protein denaturation is___________.

• Irreversible

• require heat

• reversible

• require water