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What is the structure of an animal cell?

At GCSE level, you probably looked at the basic structure of an animal cell comprising the cell membrane, cytoplasm and nucleus. These are all that is normally visible of a cell when you look at it under a l...
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Answered by Calum M. • Biology tutor
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What are some of the sources of unemployment?

There are many causes of unemployment. First, it takes a while for workers to find a job and it takes time for firms to find adequate workers. Minimum wages can also increase unemployment. When the wage is f...
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Answered by Galman D. • Economics tutor
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How should I start on my Personal Statement?

Like with every piece of writing, the key to success is a good plan. Have a think about why you are the best candidate, and why the admissions officer should give you a place at the university of your choice...
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Describe how Carbon Dioxide is assimilated in the Calvin cycle.

CO 2 from the atmosphere diffuses into the leaf through the stomata and then into the stroma within the chloroplasts of mesophyll cells. In the stroma the enzyme Ribusco catalyes the combining of CO 2 with r...
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Answered by Victor A. • Biology tutor
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A titration is carried out and 0.04dm^3 of sulphuric acid neutralises 0.08dm^3 sodium hydroxide of concentration 1mol/dm^3. Calculate the concentration of the sulphuric acid.

The first thing to do with this titration calculation is write the balanced symbol equation for the reaction. Using the knowlege that when an acid and base react a salt and water is produced we can write: H ...
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Answered by Victor A. • Chemistry tutor
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