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Humans and grasshoppers have very similar percentages of each base in their DNA but they are very different organisms. Use your knowledge of DNA structure and function to explain how this is possible (2 Marks)

If you’re first thought on reading this is panic. Don’t worry there are a clues to guide you to the answer. As with almost every problem the first step is to read the question carefully and look at the numbe...
JC
Answered by James C. • Biology tutor
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What are the advantages provided to plant cells by having a cell wall?

Cell walls provide plant cells with protection and structure. Protection may be from adverse conditions or from biotic threats like fungi or bacteria. The structure of the plant is dependent on the presence ...
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Answered by Peter O. • Biology tutor
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What is the mitochondria and what is its role within the cell?

The mitochondria is an organelle found in most cells of eukaryotic organisms, excluding some specific cells such as red blood cells. It has a double membrane and is variable in size (but usually between 0.75...
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Answered by Rosie P. • Biology tutor
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What is a genetic mutation?

A mutation is a random change in the amount of DNA or sequence of DNA nucleotides within a cell. DNA is a double helix with two polynucleotide strands joined by hydrogen bonds between complementary base pair...
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Answered by Krupa R. • Biology tutor
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What is the difference between an allele and a gene?

A gene is a section of DNA coding for a specific protein. This protein will perform a certain function within the organism. You interit two forms of each gene, one from each parent. These are known as the al...
YP
Answered by Yanina P. • Biology tutor
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