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What is Evolution?

The Theory of Evolution states that organisms change (evolve) over a long time (from simple life forms) due to natural selection. Natural Selection: this is based on 3 key points. 1: that there is a lot of d...
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Answered by Dominic Y. • Biology tutor
4619 Views

What is the structure of DNA?

DNA is a double helix. Consisting of two strands, which are made up of bases A T C and G Complementary base pairing occurs, where if part of one strand contains an A, the same part of the other strand contai...
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Answered by Thomas D. • Biology tutor
3931 Views

Is respiration the same thing as breathing?

No, they are not the same (although they do both involve the respiratory system!). The key differences:Breathing is the process of moving air in and out of the lungs - like when you take a breath.Respiration...
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Answered by Rhiannon L. • Biology tutor
30050 Views

What are the four levels of protein structure?

Primary - The sequence of amino acids in the Protein, defined by the DNA sequence coding for the protein. Secondary - Any folding or coiling within the protein which are stabilised by hydrogen bonds. The two...
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Answered by Theo N. • Biology tutor
5944 Views

What happens in the process of eutrophication?

1. Fertilisers are washed into waterways by rain or irrigation. 2. The increased availability of nutrients causes aquatic plant life to grow rapidly. 3. An algal bloom occurs, obscuring light from the plants...
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Answered by Alexander A. • Biology tutor
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