Practising recall and doing questions is so important for long term retention of information. Try this self marked quiz. OCR A Enzymes

Practising recall and doing questions is so important for long term retention of information. Try this self marked quiz. OCR A Biodiversity

Practising recall and doing questions is so important for long term retention of information. Try this self marked quiz. OCR A Biochemistry.

Practising recall and doing questions is so important for long term retention of information. Try this self marked quiz. OCR A Plant Transport.

Practising recall and doing questions is so important for long term retention of information. Try this self marked quiz. OCR A DNA and Protein Synthesis

10% of the marks in Biology papers are for calculations. Here are some good practise questions and a great advice document from OCR (applicable to all boards)

OCR A June 2019 summer highlights

OCR A Biological diversity (H420/02) June 2018 - Multiple Choice Questions as self marking quiz

Self marking quiz for the OCR A Biological processes June 2018 paper

Self marking quiz for the OCR AS Biology A H020/01 Breadth in biology paper

Some terrific guidance and definitions here - from AQA but applies to all exam boards

A great glossary of vocabulary that applies to Biology questions and answers.

Cell cycle, mitosis and cell division. Pack of exam questions on mitosis and meiosis

Powerpoints, videos and animations, a self marking quiz on lipids and carbohydrates.

Some tips

• Number the carbons and understand when and how a 1,4 glycosidic bond forms.

• Why it matters that you can form a 6,1 bond in order to branch a polysaccharide.

• Why does it matter that polysaccharides are insoluble and mono and di-saccharides are soluble.

• What is the consequence of Beta glucose forming cellulose

• Which molecules have a 5 carbon sugar in mammals ?

• Can you explain why fatty acids are non-polar and what is the consequence for the formation of cell membranes

Nucleotide structure and DNA replication, useful resources, animations, powerpoints and exam questions. Meselson and Stahl experiments….

Resources for learning the immune system. Powerpoints, animations, videos, self marking test and some rare immune sytem questions.

Nightmare essays …..