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Explain the process of oxidative phosphorylation and the electron transport chain in the production of ATP in respiration.

Oxidative phosphorylation and the electron transport chain (ETC) are both aerobic processes that require oxygen. These processes occur in the mitochondria of cells across the inner mitochondrial membrane. El...
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Answered by Keval P. • Biology tutor
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Describe how deoxygenated blood flows through the heart

Deoxygenated blood from the body flows into the right atrium via the vena cava . The right atrium contracts, forcing open the tricuspid valve . This allows blood to flow from the right atrium into the right ...
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Answered by Anna F. • Biology tutor
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Describe the processes that occur during the first division of meiosis.(6 marks)

The first division of meiosis consists of the stages, interphase, prophase, metaphase, anaphase and telophase. During interphase, growth of the cell and more importantly, DNA replication occurs. After DNA re...
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Answered by Orla F. • Biology tutor
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Describe the process of genetic engineering and give an example of something this can be used to produce.

Genetic engineering is a biotechnology technique where DNA from one organism is transferred to another organism. The reason we use this technique is so the organism that receives DNA becomes genetically modi...
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Answered by Michael C. • Biology tutor
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A mutation of a tumour suppressor gene can result in the formation of a tumour. Explain how. Not all mutations to the gene result in a tumour. Explain how.

To answer this two-part question students must be able to understand two concepts: what a gene can do; and what constitutes a gene. For the first part, a mutation in the genetic code of the tumour suppresor ...
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Answered by Luke Y. • Biology tutor
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