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What is the difference between mitosis and meiosis?

Mitosis is a process associated with organism growth, and it involves a tetraploid cell dividing to give two genetically identical diploid cells. Meiosis is the process by which gametes are formed, and it in...
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What is the chain rule?

A special rule, the chain rule, exists for differentiating a function of another function (finding dy/dx). Consider the expression cos x 2 . We call such an expression a ‘function of a function’. We could id...
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Answered by Diego M. • Maths tutor
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By discussing the structure and bonding properties of chlorine and sodium chloride, explain why chlorine is a gas at room temperature but sodium chloride is a solid.

Within the chlorine molecule, there are covalent bonds present between each atom of chlorine. This results in the formation of simple molecules, meaning there are no bonds between molecules of chlorine. As a...
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Answered by Alex T. • Chemistry tutor
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Express √75 in the form of n√3 , where n is an integer. Using this information, solve the following equation: x√48 = √75 + 3√3 (4 marks)

√75 = 5√3, therefore x√48 = √75 + 3√3 x√48 = 5√3 + 3√3 x(√16 x √3) = 5√3 + 3√3 4x√3 = 5√3 + 3√3 4x√3 = (5 + 3)√3 4x√3 = 8√3 x√3 = 2√3 x = 2
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Answered by Alex T. • Maths tutor
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There is an increasing worry about the rise of antibiotic-resistant bacteria, such as MRSA. How can doctors ensure that this threat is minimised? (2 marks)

Doctors can ensure that there is a reduced number of antiobiotics prescribed for patients. They can also make sure that patients are fully evaluated so as to stop the prescription of antibiotics for viral in...
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Answered by Alex T. • Biology tutor
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