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BIOLOGICAL MOLECULES 3

Across
A group with the formula COOH found in amino acids.
A group with the formula NH2 found in amino acids.
The colour which indicates a positive test for proteins.
Type of protein structure made from several polypeptide chains. Examples are haemoglobin, insulin and collagen.
An enzyme that hydrolyses the peptide bonds at the end of proteins to remove single amino acids.
A covalent bond which is formed between sulfur atoms (two words).
A monomer of proteins (two words).
An endopeptidase enzyme that hydrolyses peptide bonds within a protein.
A bond formed between amino acids (two words).
Type of reaction when peptide bonds are broken between amino acids using a molecule of water.
Type of proteins found in cell membranes which have hydrophobic and hydrophilic amino acids.
Type of protein structure which is flat and straight with hydrogen bonds between amino acids in the chain.
Down
Type of of proteins are present in cell membranes.
Type of proteins which are very strong and consist of long polypeptide chains. Examples are keratin and collagen.
A protein that has a carbohydrate attached.
Type of proteins which are spherical in shape, insoluble and have roles in metabolism such as digestion.
Type of test for proteins.
Type of reaction when amino acids come together to form a peptide bond.
Type of structure where a protein is formed in a straight chain.
Type of protein involved in the immune system. They have two light and two heavy chains.
A molecule formed from two amino acids.
Type of protein structure which is coiled or folded and has hydrogen and ionic bonds.
An enzyme that catalyses the hydrolysis of proteins,