Top answers

Explain the gaps within an absorption spectrum and where this may commonly occur in the universe

The gaps within an absorption spectrum occur when the light that is measured has passed through a medium that has absorbed some photons. The photons that the medium absorbs are specific to the element that t...
FD
Answered by Felix D. • Physics tutor
2999 Views

How does allopatric speciation work?

Allopatric speciation occurs when the population of a species becomes divided and the two (or more) groups are isolated from one another. Different factors in the environment of each group will affect the pr...
GW
Answered by Georgia W. • Biology tutor
4547 Views

Explain why the binding of one oxygen molecule to haemoglobin makes it easier for a second molecule of oxygen to bind.

The binding of the first oxygen molecule changes the tertiary and therefor the quaternary structure of the haemoglobin molecule, therefore exposing another binding site making is easier for the second molecu...
Answered by • Biology tutor
6044 Views

Outline and evaluate the biological explanation of aggression (16 marks)

AO1 is worth 6/16 marks and so should be no longer than 1-2 paragraphs. This should include any key theorists and studies as well as addressing ‘outline’ portion of the question. This could include discussio...
Answered by • Psychology tutor
4456 Views

What is the difference between static and dynamic efficiency?

Static efficiency describes the level of efficiency at a certain point in time. This, therefore, describes both allocative and productive efficiency. A firm is productively efficient if they are at their min...
Answered by • Economics tutor
23334 Views