The flow chart illustrates part of the process of collagen formation. Three polypeptide chains joined together by X bonds make a triple helix. Intermolecular bonds hold the triple helix together to produce Y, and these then produce Z. Which row correctly gives X, Y and Z?
- AX: disulfide, Y: fibres, Z: fibrils
- BX: hydrogen, Y: fibrils, Z: fibres
- CX: hydrogen, Y: microfibrils, Z: fibres
- DX: peptide and hydrogen, Y: fibres, Z: microfibrils