Search our library of A Level questions

Top answers

All subjects

A Level

How far do you agree that women had made significant gains in their fight for equality by 1980s?

How far do you agree that women had made significant gains in their fight for equality by 1980s?
In order to address the question, it is important to define the means to judge the term ‘gains’ upon. ...

Answered by Ewan D. • History tutor

6255 Views

Figure 1 shows a maxwell-Boltzmann distribution of molecular energies of a sample of gas at a fixed temperature. (a) Label the y axis. (b) On Figure 1, sketch a maxwell-Boltzmann distribution for the same sample of gas at a lower temperature.

(a) number of molecules (1 mark).(b) maxima is displaced up and to the left (1 mark)all of the following: (1 mark)curve starts at the origin,candidate’s curve crosses the original line on...

Answered by Mike S. • Chemistry tutor

6600 Views

Describe the structure of the personality according to the psychodynamic approach in psychology

The fundamental concept of the psychodynamic approach is that the personality is tripartite. The theory was originated by Freud, who stated that the personality could be divided into the id, ego and super...

Answered by Toju A. • Psychology tutor

27355 Views

What is the mechanism which leads to an increase in heart rate during exercise?

Exercise leads to an increase of CO2 in the blood. This lowers pH as the CO2 binds with water to form carbonic acid. This pH change is measured by chemo-receptors in the carotid arteries. This change then...

Answered by Mirza B. • Human Biology tutor

3326 Views

Explain what are the primary, secondary, tertiary and quaternary structures of a protein

The primary structure is the sequence of amino acids. It defines the role of the protein as all the other structures are based off of it.
The secondary structure dictates whether the protein is folde...

Answered by Anastasia N. • Biology tutor

8718 Views