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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 a...

Answered by Molly S. • Biology tutor

8494 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...

Answered by Laura P. • Biology tutor

3233 Views

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...

Answered by Tayla B. • Maths tutor

23976 Views

How do feminists view inequality

Break it down into different strands to show nuance:
liberal - Sharpe, WilkinsonRadical - Greer, FirestoneMarxist - Ansley, BenstonPost modern - Staceyetc.

Answered by Jack L. • Sociology tutor

1657 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 ...

Answered by Jack L. • Psychology tutor

2777 Views