WebHere are the instructions to extract DNA from a kiwi: Remove the skin of half a kiwi, then mash up the flesh. Add a teaspoon of salt and a small amount of washing up liquid into the mashed up fruit. Mix this all up. Heat this mixture for 5 minutes at around 60 degrees. Use a funnel and filter paper to filter the mixture. WebProteins contribute to the biochemical processes that preserve life. Proteins are complex macromolecules (polymers). They have high molecular weight and are made up of structural units (monomers) called amino acids. Amino acids are the protein’s building units. They are organic compounds made up of hydrogen, oxygen, carbon and nitrogen atoms.
Polymers - Edexcel - Video - GCSE Design and Technology - BBC Bitesize
WebThe essential exam preparation tool for teachers. Thousands of searchable past AQA GCSE and A-level questions, mark schemes and examiner comments to share with your students.. Good assessment made easy. Web5.16 draw the repeat unit of addition polymers, including poly (ethene), poly (propene) and poly (chloroethene)*. An addition polymer is a long molecule structure formed from many monomers. The monomers are alkenes. an n outside the bracket which representsthe number of times it is repeated. iphone not seeing airtag
Polymers - Edexcel - Video - GCSE Design and Technology - BBC …
WebLearn and revise plastics with BBC Bitesize for GCSE Design and Technology Edexcel. WebPolymers. Materials are chosen based on factors including working properties, aesthetics, environmental impact, function, manufacturing processes etc. It is important to choose a material fit for purpose. Part of. Design and Technology. Materials. Revise. Video. Test. WebPolymers are a special class of hydrocarbon molecule.Unlike the majority of the families of molecules so far studied, polymers do not exist as simple molecules.Instead, polymers exist as long chains of primarily carbon.The chains can range from a few dozen carbon atoms long, all the way up to tens of thousands of atoms long.. Polymers are made up of … iphone not saving cropped photos