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What is the difference between eukaryotic cells and prokaryotic cells?

The main difference between eukaryotes and prokaryotes is that eukaryotic cells contain membrane-bound organelles (this includes a nucleus). Eukaryotes can be a single-celled or multi-celled organisms, such ...
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Answered by Sarah L. • Biology tutor
4692 Views

A right-angled triangle has a base of 5 cm, a height of 12 cm. Find the length of the hypotenuse.

Draw the triangle.Let the base = a, height = b and hypotenuse = ca = 5, b = 12, c = ?Using Pythagoras theorem, a 2 + b 2 = c 2 so, 5 2 + 12 2 = c 2 25 + 144 = c 2 169 = c 2 c = sqrt (169)c = 13So the hypoten...
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Answered by Abhiyan B. • Maths tutor
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Explain what phototropism is and why plants might benefit from positive phototropism.

Phototropism is a growth response to a light stimulus.Positive phototropism causes the stems of plants to grow towards a light source causing the leaves of the plant to be pointing towards the lgth source. t...
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Answered by Rachel S. • Biology tutor
34591 Views

Explain the difference between covalent and ionic bonding.

In covalent bonding 2 or more atoms share electron in their outter shells to give them all full outer shells. In ionic bonding one atom donates one or more electons to another atom, the donating atom becomes...
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Answered by Rachel S. • Chemistry tutor
2917 Views

ABCD is a regular paralleogram, A=(2,1) B=(7,2) and C=(4,6), work out the gradient of the line CD and then work out the area of ABCD.

As its a parallelogram the gradient of CD will be the same as the gradient of AB so you just need to work out the gradient of AB using the formula (y 2 -y 1 )/(x 2 -x 1 ) which would be (2-1)/(7-2)= 1/5 or 0...
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Answered by Rachel S. • Maths tutor
3615 Views