UNIT 3 2C: Proteins

Question 1

Biomacromolecule

Answer 1

A large biological polymer, such as a protein, a nucleic acid or a carbohydrate

Question 2

Peptide Bond

Answer 2

A chemical bond between two amino acids

Question 3

Polypeptide

Answer 3

A long chain of amino acids forming part of a protein

Question 4

Condensation reaction

Answer 4

A reaction in which two molecules are joined to make a larger molecule, resulting in the loss of a smaller molecule as another product (in organisms, this is usually water)

Question 5

Proteome

Answer 5

The complete collection of proteins within an organism at a given time

Question 6

Roles of Proteome

Answer 6

Hormones e.g Insulin
Immunity e.g antibodies
Transport e.g Haemoglobin
Structure e.g Collagen
Movement e.g Actin
Enzymes e.g Pepsin

Question 7

4 Levels of protein structure

Answer 7

1. Sequence of amino acids
2. Alpha Helix/Beta-pleated sheets/Random coils
3. Single polypeptide chain
4. Multiple polypeptide chains

Question 8

Order Of protein synthesis in Secretory Pathway

Answer 8

Nucleus
Ribosome
Rough ER
Golgi
Vesicle

Question 9

What is the name of the bond formed when two amino acids join together?

Answer 9

peptide bond

Question 10

What is the component that differentiates between Amino acids

Answer 10

The variable group

Question 11

Products of a condensation reaction

Answer 11

Dipeptide + water