Download Revision Questions

Revision Questions
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What kind of organism is yeast?
Write a word equation for aerobic respiration.
Write a word equation for anaerobic respiration in yeast.
Compare the amount of energy given off in these processes.
In brewing, why is the barley malted?
What kinds of micro-organisms are used in brewing, baking, yoghourt and cheese
making?
7. Describe what happens to milk as it goes sour.
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Describe two harmful effect of untreated sewage.
Name three diseases spread by sewage.
What two useful materials are obtained from solid sewage?
Describe the treatment of the liquid part of sewage.
Why must its breakdown be aerobic?
In what two ways is the sewage kept aerobic?
Why is a range of micro-organisms needed to break down sewage?
Give three examples of useful products of waste.
What are the advantages of upgrading waste?
What are the advantages of fermentation fuels over fossil fuels?
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What is single-cell protein?
Why is single-cell protein worth producing?
What do micro-organisms do in the carbon cycle?
What do the micro-organisms gain from this?
What are the chemical changes in nitrification?
Why are nitrogen fixing plants good for the soil?
Give 2 examples of nitrogen fixing plants.
Why must food production be kept free from micro-organisms?
Explain how this is done.
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Describe the arrangement of genes in a bacterium.
Describe how a bacterium can be altered to make a different chemical such as insulin.
Describe some useful products of genetic engineering.
What are the advantages of genetic engineering over selective breeding?
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What are biological soap powders?
What advantages do they have?
What do antibiotics do?
Why is a range of antibiotics needed to treat a disease?
Why are immobilised enzymes useful?
Describe the difference between batch and continuous processing.
Biotechnology
A. McF.
GHS SGB
9 Mar 2005