Protein

Question 1

Peptide bond

Answer 1

Bonds between amino acids

Question 2

Primary structure

Answer 2

Structure in which amino acids are formed only bonds present is peptide bonds

Question 3

Secondary structure

Answer 3

Oxygen hydrogen and nitrogen atoms of the amino acids interact
A result of hydrogen bonds

Question 4

Types of secondary structure

Answer 4

Alpha helix hydrogen bonds may form pulling into a coil
Beta pleated sheet polypeptide chain lie parallel joined by hydrogen bonds forming a sheet

Question 5

Tertiary structure

Answer 5

Folding of a protein into its final shape
Interacts between r groups

Question 6

Types of interactions between r groups

Answer 6

Ionic bonds
Disulphide bonds
Hydrogen bonds
Hydrophobic and hydrophilic interactions

Question 7

Quaternary structure

Answer 7

Association of 2 or more individual proteins called sub units

Question 8

Globular proteins

Answer 8

Compact water soluble and roughly circular in shape
Form during tertiary
R groups kept away from water so become water soluble

Question 9

Conjugated proteins

Answer 9

Globular proteins that contain a prosthetic group

Question 10

Fibrous proteins

Answer 10

Long insoluble molecules because many amino acids with hydrophobic r groups in primary structure
Repetitive structures so organised