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GCSE

Define the different types of respiration.

Respiration is the process of transferring energy throughout cells within an organism. Energy is required for a lot of processes to take place in organisms such as: movement - for muscle contractions to t...

SW
Answered by Sarah W. Biology tutor
3726 Views

Solve the following simultaneous equations to give a value for both x and y: 3x+3y=9 and 2x+3y=5

  1. Subtract the bottom equation from the top equation to get 3x-2x=9-5 (you don't see no y values in this equation as the y's have disappeared and cancelled eachother out as 3y-3y=0)2) So 3x-2x=9-5 equ...
AF
Answered by Amy F. Maths tutor
3745 Views

Explain the process of DNA replication (6 marks).

The parental DNA is unwound from its double helix structure.DNA Helicase enzymes break hydrogen bonds between the bases of the parental DNA.DNA p...

GH
Answered by Gerald H. Biology tutor
22391 Views

simplify fully: (3x^2 - 8x -3)/(2x^2 -6x)

First of all, to simplify this fraction, we need to factorise the top and bottom equations. We shall start with the top equation. Now looking at the equation: 3x2 - 8x -3, we know that it's a q...

AH
Answered by Amanda H. Maths tutor
4992 Views

Prove that the product of 3 consecutive integers is divisible by 6

If you set the three consecutive integers to be n, n+1 and n+2, we know that one of the numbers must be divisible by 2 and one must be divisible by 3. For example if you had your three numbers as: 5, 6, 7...

SK
Answered by Shreeya K. Maths tutor
17099 Views

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