Unit 4- Organic Materials Structure and Function Flashcards
a-glucose polymerises to form which branched glucose polymer?
Amylopectin
a-glucose polymerises to form which unbranched glucose polymer?
Amylose
These are formed where adjacent polypeptides intereact through H bonding between the peptide bonds
B-pleated sheets
B-Glucose polymerises to form which unbranched and insoluble polymer?
Cellulose
The coiled spring structure where the side chains extend beyond the helix itself is known as …?
a-helix
Give an example of a copolymer
polyester
Hard water contains high levels of “______”
Metals ions such as Ca2+, Fe2+, Mg2+
In relation to water solubility, what is the name given to the carbon chain of a soap molecule?
hydrophobic
In relation to water solubility, what is the name given to the ionic end of a soap molecule?
hydrophilic
Interactions between side chains of amino acids in a polypeptide chain can be of four forms. Name three.
Ionic bonds, Disulfide bonds, hydrophobic interactions/dispersion forces, hydrophilic interactions/H-bonding
The monomer of polylactic acid is?
lactic acid
The monomer tetrafluoroethene forms which polymer used for coating frypans.
Polytetraflurorethene (PTFE)
Name the amino acid without a chiral centre.
Glycine
Name the atom that joins monosaccharides to form a glycosidic bond.
oxygen
Name the monomer of polyethylene.
Ethene
Provide an advantage of natural polymers over synthetic polymers
Natural polymers are biodegradable due to reversibility of condensation reaction
The _______ structure considers the 3D arrangment of a protein.
Tertiary
The _______ structure considers the final, complete structure fo a protein.
Quarternary
The _______ structure of a protein is the local folding of a polypeptide.
Secondary
The _______ structure of a protein is the sequence of amino acids.
Primary
Through which carbons do disaccharides form a glycosidic linkage?
1, 4
Through which carbons does amylopectin form a glycosidic linkage?
1 & 4 and 1 & 6.
Triglycerides consist of how many fatty acids?
3
Two major competing theories exist on the workings of enzymes, Name them.
Induced fit model, Lock and Key model
