Proteins Revision

3. The -NH2 chemical group in an amino acid
7. The variable side chain that is different for each amino acid (_-_ _ _ _ _)
8. _____ interactions, the tendency of non-polar molecules/parts of molecules to clump together avoiding water.
10. The bond between two amino acids.
12. Proteins in the immune system that recognise different pathogens.
13. A strong bond formed by two atoms sharing electrons.
16. The protein that carries oxygen in red blood cells.
17. The level of protein structure that means the overall 3D shape of the molecule.
20. The monomer of a polypeptide.
21. A polymer of amino acids.

1. The level of structure that means the sequence of amino acids in a protein.
2. ____ acid, the -COOH chemical group in an amino acid.
4. A polymer made of amino acids folded into a specific 3D shape.
5. One form of secondary protein structure.
6. Beta-pleated ____: another form of secondary protein structure.
9. The opposite of hydrophobic.
11. Something that can speed up a chemical reaction.
14. The protein hormone that people with Type I diabetes cannot make.
15. The level of protein structure found in some proteins such as haemoglobin that have multiple subunits and/or a prosthetic group.
18. A molecule of this is produced when a peptide bond is formed between two amino acids.
19. _____ bridge, a covalent bond between the sulfur atoms in two molecules of the amino acid cysteine.
22. A protein that can catalyse a reaction.