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Describe the pathway of oxygen getting from the air into the blood in the human body

diaphragm flattens and the chest wall moves up and out to decrease the pressure in the thorax. Inspiration occurs bringing air from the atmosphere into the mouth/nose and down the trachea, into the bronchi, ...
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Answered by Isabel C. • Biology tutor
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Suggest what happens in heart muscle cells when the coronary artery gets blocked.

'Coronary' refers to heart, and coronary arteries supply heart muscle cells with blood. Firstly consider why we need to transport blood around the body? Blood carries many essential nutrients and components ...
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Answered by Elizabeth L. • Biology tutor
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Can you explain the Human Genome Project?

DNA sequencing technology has made great advancements in the recent years and allowed us to sequence bits of DNA. In other words, we now have the technology to determine the sequence of lengths of DNA at a n...
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Answered by Leila Y. • Biology tutor
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The peppered moth is a moth species with pale brown wings. During the industrial revolution, the number of black speciemens increased dramatically around urban areas. Explain this phenomenon using the concepts of natural selection.

The case of the emergence of a new shade within the species is an example of Evolution by Natural Selection . Moths use the colour of their wings as camouflage against predators. The environment they live in...
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Answered by Martin K. • Biology tutor
5064 Views

Describe the processes that take place during each stage of mitosis.

During prophase chromatin condenses and supercoils, and so the chromosomes become visible. The nuclear envelope breaks down and the centrioles migrate to opposite poles of the cell and start to produce the s...
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Answered by Niamh C. • Biology tutor
3788 Views