DNA Purification Practical investigations can be conducted to?purify?(isolate)?DNA?via the process of?precipitation Isolating DNA?from cells is an essential?starting point?for a huge range of other...
DNA Structure The nucleic acid DNA is a?polynucleotide?– it is made up of?many nucleotides?bonded together in a?long chain A DNA nucleotide DNA molecules are made up of?two polynucleotide st...
Structure of ATP & ADP All organisms require a constant supply of energy to maintain their cells and stay alive In all organisms this energy is required for: Anabolic reactions?(building larger...
Nucleotides DNA and RNA are nucleic acids:?polymers?that are made up of?many repeating units?(monomers) called?nucleotides Each nucleotide is formed from: A?pentose sugar?(a sugar with 5 carbon ato...
CIE IGCSE Biology: 復(fù)習(xí)筆記：5.1.5 Enzymes & pH: Extended Enzymes & pH: Extended The optimum pH for most enzymes is 7 but some that are produced in acidic conditions, such as the stomach, h...
CIE IGCSE Biology: 復(fù)習(xí)筆記：5.1.4 Enzymes & Temperature: Extended Enzymes & Temperature: Extended Enzymes are?proteins?and have a?specific shape, held in place by?bonds This is extremely i...
CIE IGCSE Biology: 復(fù)習(xí)筆記：5.1.3 Enzyme Action & Specificity: Extended Enzyme Action & Specificity: Extended Enzymes are?specific?to one particular substrate(s) as the?active site?of the ...
CIE IGCSE Biology: 復(fù)習(xí)筆記：5.1.2 Enzyme Investigations Investigating the Effect of Temperature on Amylase Starch solution?is heated to a set temperature Iodine?is added to wells of a spotting til...
Chromatography Chromatography is a technique that can be used to?separate a mixture?into its individual components Chromatography relies on?differences in the solubility?of the different chemicals ...
