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Describe the nature of the genetic code

A base triplet (sequence of 3 bases) encodes a single amino acid. The same base triplet codes for the same amino acid in all organisms, meaning that the genetic code is universal. In addition the code is non...
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Answered by Isabel B. • Biology tutor
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The formation of new species is known as speciation. Explain the difference between Allopatric and Sympatric speciation. [1 mark]

Both allopatric and sympatric speciation occurs due to reproductive isolation between populations of the same species. Allopatric speciation involves a physical barrier such as a river or mountain separating...
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Answered by Jonathan D. • Biology tutor
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Explain the primary, secondary and tertiary structure of proteins

The primary structure of a protein is made up of a sequence of amino acids which is coded for by the organisms DNA triplets which are transcribed in the process of protein synthesis, the secondary structure ...
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What is Eutrophication?

When it rains, nitrates added to the soil by fertilisers can run off into water courses, such as lakes. This is called leaching. The high level of nitrates in the water accelerates the growth of plants at th...
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How is a growth curve of microorganisms shaped? What happens during the different phases?

The growth of most microorganisms can be divided into four different phases:Lag phase - Small populations start to replicate slowly. Replication is 'lagging' as microorganisms are adapting to conditions.Log/...
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