AS Biology Flashcards
Glucose
A monosaccharide with the chemical formula of C6H12O6. One of the main products of photosynthesis in plants
Hexose monosaccharide
A monosaccharide composed of six carbons
Condensation reaction
A reaction between two molecules resulting in the formation of larger molecule and the release of water molecule.
Maltose
Two glucose molecules linked by a 1,4 glyosidic bond
Disaccharide
A molecule comprising monosaccharides, joined together by a glycosidic bond
Sucrose
A disaccharide made up of fructose and glucose monosaccharides
Lactose
A disaccharide made up of galactose and glucose monosaccharides
Ribose
The pentose sugar present in RNA molecules
Starch
A polysaccharide formed from alpha glucose molecules joined together to form amylose and amyloprotein
Glycogen
A branched polysaccharide formed from alpha glucose molecules. A chemical energy store in animal cells
Cellulose
A polysaccharide formed from beta glucose molecules where alternate beta glucose molecules. Forms hydrogen bonds with other cellulose molecules. Major component of plant cells
Benedict’s reagent
An alkaline solution of copper (II) sulphate used in chemical tests for reducing and non-reducing sugars
Hydrophobic
The physical property of molecule that is repelled by water
Hydrophilic
The physical property of molecule that is attracted to water
Primary structure
The sequence in which amino acids are joined together
Secondary structure
Repeating structure of amino acids. Hydrogen bonds form within amino acid chain pulling into a coiled shape (alpha helix)
Tertiary structure
Further folding of the secondary structure of proteins involving interactions between R-groups
Quaternary structure
The result from the association of two or more individual proteins called subuints
Globular proteins
Spherical, water soluble proteins
Phosphodiester bonds
Covalent bonds formed between the phosphate group of one nucleotide and the hydroxyl (OH) group of another
Pyrimidines
Single –ringed nitrogenous bases that form a part of a nucleotide