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Explain how the hormone insulin controls blood glucose concentration

Insulin is a hormone secreted from the pancreas in response to high blood sugar levels (glucose). Insulin causes cells in the liver to convert glucose into glycogen (storage molecule) absorbing glucose out o...
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Answered by Shivam K. • Biology tutor
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What happens to the arteries in coronary heart disease?

The blood vessels supplying the heart (coronary arteries) become narrowed or blocked. This is caused by plaque buildup in the artery walls. These plaques are made up of fatty deposits (cholesterol). Plaque b...
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Answered by Shivam K. • Biology tutor
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Inheritance and Genetics: Explain the offspring genotypes and phenotypes when two heterozygous individuals reproduce.

This is a common and important genetics question to study. First let's pick out the key terminology. Genotype is the genetic code that gives rise to a physical characteristic - a phenotype. At GCSE, all the ...
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Answered by Ashvin K. • Biology tutor
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Two parents are both carriers for a genetic condition which is recessive. What is the percentage chance they will have a child affected by the condition?

I would approach explaining the answer to this question in a manner which was appropriate to the stage and understanding of the student. First I would check understanding of the meaning of the question and i...
TD
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Explain how an individual develops immunity following infection by a bacteria

When an individual is exposed to the bacterial pathogen and its antigen, it causes activation of the body's own immune response. When the immune response is initiated, the pathogens are destroyed by T killer...
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Answered by Kathryn M. • Biology tutor
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