Biological Molecules (A Level) Crossword Puzzle

QUESTIONS LIST:

• carboxyl : the acidic group of an amino acid
• fibrous : a protein with regular structure, often used for structural functions
• centrifuge : to spin a suspension very faster to separate components
• cholesterol : a lipid important for fluidity of plasma membranes
• globular : an irregularly shaped protein e.g. an enzyme
• hydrogen bond : weak intermolecular force formed between polar molecules
• cellulose : polysaccharide made from beta glucose monomers
• hemoglobin : a protein with quaternary structure, binds to oxygen
• triglyceride : macro molecule made of three fatty acids and one glycerol
• reducing sugar : all mono-saccharides and some di-saccharides are this
• hydrolysis : reaction splitting a molecule in two by the addition of a water molecule
• saturated : a fat with no c-c double bonds
• condensation : reaction joining two molecules by the removal of water
• r group : the variable part of an amino acid
• alpha helix : part of the secondary structure, held together by hydrogen bonds
• phospholipid : molecule of the plasma membrane, composed of one hydrophilic head and two hydrophobic tails
• amino acids : monomers which form proteins
• ester : bond formed between a fatty acid and a glycerol
• collagen : a protein made of approximately 33% glycine
• four : number of bonds made by a carbon atom
• polar : a molecule with slightly positive and slightly negative regions
• hydrophobic : repelled by water
• peptide : bond formed between two amino acids
• prosthetic group : an inorganic group attached to a polypeptide chain, essential for the functioning of the protein