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Describe and explain three differences between meiosis and mitosis

Mitosis consists of one cell division whereas meiosis consists of two cell divisions.Mitosis produces two genetically identical daughter with the same number of chromosomes as the parent cell whereas meiosis...
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Answered by Krishan P. • Biology tutor
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Describe the roles of the nervous system in homeostasis.

Homeostasis is a maintenance of a constant internal environment. The human nervous system consists of central nervous system; brain and spinal cord and peripheral nervous system which is subdivided into auto...
FM
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Name and describe the features of the type of blood vessel which takes high pressure blood from the heart to other parts of the body

Arteries are the blood vessels which deliver oxygen-rich blood from the heart to the tissues of the body. The outer layer of an artery is made of collagen fibers. The middle layer has smooth muscle and elast...
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Answered by Hazel D. • Biology tutor
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How does a pregnancy test work?

1) The wick of the pregnancy test is socked in urine. 2) The test contains mobile monoclonal antibodies with small coloured beads attached to them. 3) These mobile monoclonal antibodies only bind to hCG and ...
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Answered by Lijun Z. • Biology tutor
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Fertiliser, such as manure, contains ammonium compounds. Explain how the presence of soil bacteria and the use of manure improve crop yield. (6 marks)

Ammonium compounds in the manure are converted into nitrite , then into nitrate by nitrifying bacteria . Nitrate is then taken up by plants via active transport. Nitrogen fixing bacteria living in the nodule...
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Answered by Meral C. • Biology tutor
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