Food: Protein Flashcards
1
Q
Elements in protein
A
(C) Carbon (H) Hydrogen (O) Oxygen (N) Nitrogen Maybe sulfur
2
Q
Peptide bond
A
A bond between amino acids that have less than 20 amino acids
3
Q
Polypeptide bonds
A
More than 20 amino acids
4
Q
Protein
A
At least 20 amino acids
5
Q
Types of protein
A
Fibrous
Globular
6
Q
Fibrous protein
A
Show little to no folding
Form long fibres
Strong and tough
E.g keratin in hair, nails
7
Q
Globular protein
A
Shows lots of folding
Form rounded shapes
E.g egg whites (albumen)
8
Q
Role of protein (structural)
A
Keratin
- Hair
- nails
- skin
Myosin
- muscle
Proteins and phospholipid
- cell membrane
9
Q
Role of protein metabolic
A
Enzymes (speed up chemical reactions)
Hormones
Chlorophyll (needed for photosynthesis)
Haemoglobin (red pigment in blood, carries oxygen)
10
Q
Sources of proteins
A
Lean meat Eggs Nuts Beans Fish Lentils
