1.2 The student repeated the experiment but this time put a layer of oil on top of the yeast and glucose solution. Suggest two similarities and two differences in the way that the conditions in the flask
would change after one hour compared to the first experiment.
Similarities:
Differences:
[4]
[Total 7 marks]

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

Environmental differences within ecosystems are generally caused by

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.