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Factorise the following equation: y = 2x^2 + 4x - 6

For this question, it is best to first take out a factor of 2 from the equation. This will leave you with y=2(x 2 +2x-3). We then need to work out the two numbers that will multiply to -3 and add to 2. We ca...
SC
Answered by Stephen C. • Maths tutor
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What is involved in active transport?

This question comes up often in GCSE papers and is a key topic when talking about exchange or cell biology. Active transport comes hand in hand with diffusion and osmosis. It is a key mechanism for moving su...
CS
Answered by Charlotte S. • Biology tutor
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Define the three types of chemical bonding.

Ionic bonding occurs between metallic and non-metallic atoms. Electrons are transferred from metal atoms to non-metal atoms. This results in positively charged metal ions and negatively charged non-metal ion...
EP
Answered by Ellie P. • Chemistry tutor
3762 Views

Giving an overview of the two different processes, compare and contrast the processes of spermatogenesis and oogenesis.

In spermatogenesis, germline epithelium in the seminiferous tubules of the testes divides by mitosis and then a period of cell growth occurs, changing them from spermatogonia to primary spermatocytes. These ...
EP
Answered by Eashan P. • Biology tutor
6342 Views

What is the function of the kidneys and how do they carry this out?

Broadly speaking, the main function of the kidneys is to filter out waste from the body and excrete it out in the urine. Excretion is the removal of waste (i.e. products of metabolism/ toxic products like ur...
MR
Answered by Mannat R. • Biology tutor
3658 Views