DNA and polymers Flashcards
Define Addition Polymer
long chain formed from many monomers
and no other product is formed
Uses of Terylene
Carpets, clothing.
Heat treated polyesters used for drinks bottles
What is Terylene made from
- ethane-1, 2-diol
- benzene-1,4-dicarboxylic acid
What is Nylon 6,6 made from
- 1,6-diaminohexane:
- Hexane-1,6-dicarboxylic acid
What is Kevlar made from
- benzene-1,4-diamine
- benzene-1,4-dicarboxylic acid
what is nylon used for and its properties
- fibres in clothing
properties:
- elastic, strong abrasion resistant
what is Kevlar used for and its properties
- manufacture body armour, crash helmets
properties:
- strong, light and heat resistant
The peptide bond can also be called an
- amide link
The shape of the active site is so specific to the substrate that in many cases one optical isomer may fit, whereas the other optical isomer may not so enzymes are
- stereospecific
Bonds in C-G and A-T bonds
- C-G = 3
- A-T = 2
what is cis platin
- anti-cancer drug
- Cl bind to N in DNA
Polyesters and polyamides can be broken down by hydrolysis
- so are biodegradable
explain why polyesters and polyamides can be hydrolysed but polyalkenes cannot
- polyalkenes have strong non-polar bonds that cant be hydrolysed by acids or bases
condensation polymers are biodegradable so
- can be hydrolysed under acidic or alkaline conditions,
- delta + C of polar C=O bond can be attacked by nucleophile
How do ions form in acidic conditions
- Gain H+ to NH2 + any following elements eg Cl so Cl-H3N+
- get protonated
