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CyfarthfaB2CellProce
| Question | Answer |
|---|---|
| Two molecules that firm an alternating pattern in the DNA backbone | Sugar and phosphate |
| Four different molecules that make up the genetic code | Bases |
| The Base that pairs with adenine | Thymine |
| The Base that pairs with cytosine | Guanine |
| The name given to a group of three bases that provides a code | Triplet code |
| What is made using the triplet code? | Specific Amino acid |
| Formed when amino acids join together | Protein |
| A change in the DNA | Mutation |
| Consequence of a mutation on the outcome | Different triplet code = different amino acid = different protein |
| Definition of enzyme | Biological catalyst |
| What are enzymes made of? | Protein |
| Molecule that fits into enzyme | Substrate |
| Specially shaped area of enzyme | Active site |
| Formed when enzyme and substrate join | Enzyme -substrate complex |
| Enzyme's active site has permanently changed shape | Denatured |
| Consequence of active site being denatured | Substrate can no longer fit into active site so reaction cannot taken place |
| Explain effect of temperature on enzyme activity | Initially = more energy, more collisions & enzyme - substrate complexes formed = higher rate. After optimum = enzymes denatured = lower rate |
| Best temperature or pH | Optimum |
| Everyday use of enzymes | Biological washing powder |
| Enzymes that break down carbohydrates | Carbohydrase |
| Building blocks of carbohydrates (starch) | Glucose |
| Enzyme that breaks down fats | Lipase |
| Building blocks of fats | Fatty acids and glycerol |
| Enzyme that breaks down protein | Protease |
| Building blocks of protein | Amino acids |
| Reason for using low temperatures with biological washing powders | Higher temperature would denatured enzymes |
| Environmental benefits of biological washing powder | Lower temp wash = less energy/ electricity = less fossil fuels burned in power station = less CO2 = less global warming |