Top answers

What is an enzyme?

Enzymes are proteins that catalyse the conversion of substrates into products. Similar to other catalysts, enzymes are chemically unchanged during the reaction and they do not change the position of any equi...
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Answered by Bethany F. • Biology tutor
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What is the difference between Dominant and Recessive alleles?

Alleles are different forms of a gene. For exanple if the gene is eye colour, the alleles would be the different colours (green, blue, brown) For every gene that you have, you get two alleles, one from your ...
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Answered by Joseph N. • Biology tutor
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What is cancer and what are the most common types?

Cancer: what is it? A cancer happens when cells begin to divide out of control. Benign tumours are growths of abnormal cells which are contained in one area, usually within a membrane. They do not invade oth...
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Answered by Appitha A. • Biology tutor
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Name and explain the different modes of inheritance.

Modes of Inheritance: - Autosomal dominant inheritance ; In this mode of inheritance you only need the abnormal gene (e.g. a dominant allele ) from one parent for you to inherit the disease. - Autosomal rece...
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Answered by Deborah I. • Biology tutor
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What does the nervous system consist of and explain the differences between the two.

There are two parts of the nervous system : Central Nervous system ( CNS ) and Peripheral Nervous system ( PNS ). - The CNS is made up of the brain and spinal cord. The CNS handles involuntary information. -...
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Answered by Deborah I. • Biology tutor
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