protein a level biolgy AqA

i need help with this two questions. how does the sequence of amino acid affect the function of a protein(6marks). how does the number of amino acid effect the structure of a protein or funcation of a protein ( 6 marks)

Remember the protein structure
Primary structure - amino acids sequence joined by peptide bond
Secondary structure - hydrogen bonds between non-R groups to form alpha helix or beta plated sheet
Tertiary structure - 3D shape formed by hydrogen bonds, hydrophobic/hydrophilic region, sulphide bond and ionic bond
Quaternary structure - hydrogen bonds, hydrophobic/hydrophilic region, sulphide bond and ionic bonds between polypeptide chains (tertiary structures)

The 2 questions are applying the above knowledge.

i know that but i don't know how to apply it can you help me please.

i know that but i don't know how to apply it can you help me please.

You need to understand it, not just memorise it.
The sequence of amino acids is the primary structure - influences the secondary structure and tertiary structure (due to interactions between R groups). Link it to your knowledge. High amount of hydrophilic R groups - a globular protein, soluble in water, such as insulin. High amount of hydrophobic R groups - fibrous proteins, keratin, elastin… flexible, insoluble.

Yes, you could add in examples such as enzyme active sites or protein channels etc to show how the specific sequence of amino acids would give an exact shape which is essential to its function. and you can discuss how the repeating pattern in a fibrous protein is important in creating the strong structural proterties. eg keratin