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Describe the process of Oxidative Phosphorylation in the light dependent stage of photosynthesis

Light that falls onto a photosystem excites two electrons in a chlorophyll molecule, causing the electrons to leave the molecule by Photoionization. These two electrons are absorbed by the thylakoid membrane...
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Answered by Eleanor M. • Biology tutor
4798 Views

What is a racemic mixture and why is it not optically active?

A racemic mixture contains a 50-50 mixture of two optical isomers. Optical isomers are identical in molecular structure but rotate the plane of polarized light in different directions (one rotates clockwise,...
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Answered by Labiba H. • Chemistry tutor
14003 Views

What are the different skills required to succeed in GCSE English Language and GCSE English Literature?

These are two different GCSEs that some students, including myself when I was starting KS4, find difficult to understand the varying skills that each require. For optimum success in GCSE English Language, th...
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Answered by Ella P. • English tutor
7184 Views

Describe the similarities and differences between DNA and RNA structures

Structurally, DNA and RNA are very similar. They're both composed of a backbone of sugar, a phosphate group and a chemical base. However, the sugar in DNA is a deoxyribose sugar and the sugar in RNA is a rib...
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Answered by Shannon M. • Biology tutor
10475 Views

I’ve been taught two methods for solving pairs of simultaneous equations. When should I use which?

You’ve been taught elimination and substitution. (You should also be able to solve simultaneous equations graphically.) In the elimination method, you multiply up the equations to make them have a term that ...
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Answered by Rosemary M. • Maths tutor
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