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What features differ between animal and plant cells?

Animal and plant cells share many similarities. For example, they both have: a nucleus, which houses the genetic material; a cytoplasm, where the chemical reactions of the cell occur; a cell membrane, which ...
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Answered by Gemma W. • Biology tutor
3368 Views

Find the roots of the formula x^2 + 4x + 3 by factorising.

x 2 + 4x + 3 is a quadratic equation. We're looking for a pair of numbers that add to make 4, and multiply together to make 3. Students should be encouraged to try options (e.g. 2 and 2). The pair we need is...
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Answered by Joseph B. • Maths tutor
3685 Views

Consider a competitive market, that has recently had an ad valorem sales tax imposed. Show this on a diagram. What is the impact on the market equilibrium? If the demand curve becomes more inelastic, which side of the market suffers more?

An ad valorem sales tax is a percentage tax on the market price of good, normally paid for by the seller. This tax will pull the supply curve up towards the top left corner of a supply and demand curve, with...
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Answered by Joseph B. • Economics tutor
3276 Views

Explain two consequences of the Fall of the Berlin Wall.

One consequence was that families that had been separated could meet each other again. This was because after the construction of the Berlin Wall in 1961 the East and West of Berlin were separated by the wal...
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Answered by Jen A. • History tutor
54002 Views

What is the difference between active transport and diffusion.

Diffusion is the passive (does not require energy input) movement of a substance down a concentration gradient from an area of high concentration to an area of low concentration . Eg how the colour and flavo...
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Answered by Nicholas G. • Biology tutor
10136 Views