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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 |