Last revision chapter 19-20

What would be unlikely to increase the risk of human famine?

What is an example of genetic engineering?

What is not a reason for having conservation programmes?

The action of which type bacteria would cause soil to be lacking nitrates?

The diagram shows a food web in a woodland. What is most likely to happen if all tree type X is removed by humans?

Read the question below.

The diagram shows the structure of a bacterial cell.

Which part of its structure is particularly useful in genetic engineering?

What is least likely to result from deforestation?

What is not a reason for conservation programmes?

During eutrophication.What is directly responsible for the increase in bacteria?

examples of waste products of human activity are discarded household, rubbish, excess fertiliser and untreated sewage.

The graph shows a bacteria population curve.

Which feature of bacteria makes it possible for them to be used to produce human insulin?

Evidence shows that some aquatic organisms have feminised. What is the most likely cause of this?

The student was asked to name and label each phase. What is the correct label for phase three?

Genetic engineering involves various stages.

Plasmids are often used in genetic engineering. WHat is a plasmids?

Large areas of tropical forests have been cleared for monocultures. Which effect will this have on the ecosystem?

When raw sewage is dischrged into a stream, what is a result of eutrophication?

What can be managed sustainably?

All organisms share the same genetic code. This means that bacteria can be used to

Penicillin is made in a fermenter by growing organisms. Which type of organisms is used in the production of penicillin?

What is a disadvantage of using bacteria to produce human insulin?

The process listed in 1-4 will affect the concentration of carbon dioxide in the atmosphere.

What is an example of substrate development ?

What is not a reason for using chemical fertilisers in food production?

The diagram shows an industrial fermenter used to produce penicillin. What is a function of the part labelled X?

Which enzyme would be used in a biological washing powder?

How does eutrophication lead to the death of aquatic organisms?

Which stages uses the enzyme DNA ligase during production of human insulin?

What is a direct result of deforestation?