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What is the structure of DNA?

DNA stands for deoxyribonucleic acid. And what is DNA? Well, it’s basically a carrier of genetic information. DNA is found in all cells, and it contains the information needed for cells to live, to grow and ...
MS
Answered by Molly S. • Biology tutor
9619 Views

What is an enzyme? and why are they so important for reactions to take place?

An enzyme is a type of protein which we call a biological catalyst. In biology, a catalyst is a chemical which helps speed up reactions without being used up itself. Therefore, if you add 2ml of an enzyme to...
LP
Answered by Laura P. • Biology tutor
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There are some people in a cinema. 3/5 of the people in the cinema are children. For the children in the cinema, number of girls:number of boys = 2:7. There are 170 girls in the cinema. Work out the number of adults in the cinema.

We can begin by working out the total number of children in the cinema. We know that for every 2 girls, there are 7 boys, which is the same as saying for every 1 girl, there are 3.5 boys. Three and a half bo...
TB
Answered by Tayla B. • Maths tutor
25334 Views

How do feminists view inequality

Break it down into different strands to show nuance: liberal - Sharpe, WilkinsonRadical - Greer, FirestoneMarxist - Ansley, BenstonPost modern - Staceyetc.
JL
Answered by Jack L. • Sociology tutor
1896 Views

Evaluate the Behaviourist approach to psychology

Outline a weakness - it relies on animal studies Give evidence - Pavlov, Skinner Explain - this makes it difficult to generalise to humans, lacks ecological validity Link back - this makes a weakness of beha...
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Answered by Jack L. • Psychology tutor
3229 Views