AQA GCE Biology
Proteins have a variety of functions within all living organisms.
The general structure of an amino acid.
Condensation and the formation of peptide bonds linking together amino acids to form polypeptides.
The relationship between primary, secondary, tertiary and quaternary structure, and protein function.
OCR GCE Biology
2.1.1 Biological molecules
Describe, with the aid of diagrams, the formation and breakage of peptide bonds in the synthesis and hydrolysis of dipeptides and polypeptides.
Explain, with the aid of diagrams, the term primary structure.
Explain, with the aid of diagrams, the term secondary structure with reference to hydrogen bonding.
Explain, with the aid of diagrams, the term tertiary structure, with reference to hydrophobic and hydrophilic interactions, disulphide bonds and ionic interactions.
Explain, with the aid of diagrams, the term quaternary structure, with reference to the structure of haemoglobin.
Describe, with the aid of diagrams, the structure of a collagen molecule.
Compare the structure and function of haemoglobin (as an example of a globular protein) and collagen (as an example of a fibrous protein).
Edexcel GCE Biology
Topic 2: Genes and Health
Describe the basic structure of an amino acid and the formation of polypeptides and proteins (as amino acid monomers linked by peptide bonds in condensation reactions) and explain the significance of a protein’s primary structure and properties (globular and fibrous proteins and types of bonds involved in three-dimensional structure).
Explain the mechanism of action and specificity of enzymes in terms of their three-dimensional structure and explain that enzymes are biological catalysts that reduce activation energy, catalysing a wide range of intracellular and extracellular reactions.
WJEC GCE Biology
Unit BY1: Basic Biochemistry and Cell Structure
Structure and role of amino acids and proteins. The peptide link.
Relation of molecular structure to function.
Primary, secondary, tertiary and quaternary structure of proteins.
Globular and fibrous proteins.
SQA Higher Biology
Unit 1: Cell Biology
The functional variety of proteins.
The importance of the amino acid sequence to the structure and function of proteins should be emphasised. Proteins can be classified as either fibrous (e.g. collagen) or globular (e.g. enzymes, some membrane proteins, some hormones and antibodies).
International Baccalaureate Diploma Biology
7.5 Proteins (AHL) and C1 (SL option identical to 7.5)
7.5.1 and C1.1 Primary, secondary, tertiary and quaternary protein structure
7.5.2 and C1.2 Fibrous and globular proteins
7.5.3 and C1.3 Polar and non-polar amino acids
About this resource
This resource was first published in ‘Nanoscience’.