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What are the two main secondary structures of proteins?

Alpha helices and Beta pleated sheets.

Answered by Umamah Y. • Biology tutor

4206 Views

Differentiate 4x^2 + 2ln3x + e^x

To differentiate x² you bring the power of x down, then reduce the power of x by 1, so d/dx(x²) = 2x¹

ln3x differentiates to (d/dx(3x))/3x = 3/3x = 1/x

Answered by Thomas M. • Maths tutor

7865 Views

Describe the photoelectric effect.

If we give a peice of gold negative charge and shine long wave, low frequency, electro-magnetic (E-M) radiation on it (for example radio waves) absolutely nothing will happen.

If you star...

Answered by Umar S. • Physics tutor

4515 Views

What is democracy?

Originally in Ancient Greece democracy was a form of government where all the people in a society make decisions, although in reality this meant only the free men and not any women or slaves. The aim o...

Answered by Charlotte P. • Government and Politics tutor

4248 Views

What are the central themes in The Great Gatsby?

The Great Gatsby is a complex novel with various themes, with the central themes being materialism and the American Dream. The novel is often considered to also have a strong central theme of love but it ...

Answered by Charlotte P. • English Literature tutor

15675 Views