Ocr bio Study guides, Revision notes & Summaries

OCR Biology A Level EXAM WITH QUESTIONS AND ANSWERS Change in the sequence of bases in DNA - CORRECT ANSW-What is a mutation? Substitution, deletion and insertion - CORRECT ANSWWhat are the three ways the base sequence can be altered? Point mutation - CORRECT ANSW-What is the term for a mutation where only one nucleotide is affected? degenerate code new amino acid is similar amino acid not involved with proteins function - CORRECT ANSW-What are the causes of a silent mutatio...

OCR Biology Paper 2 - Communicable disease Exam Solved 100% Correct

Suggest and explain how the root hair cells of halophytes are able to absorb water by osmosis from the soil of the salt marsh Correct Answer there is a lower water potential inside root hair cells actively transported into root hair cells, they store these ions/salts What type of Chemical reaction takes place when two nucleotides in a single polynucleotide strand are joined together? Correct Answer condensation Name the chemical released when this reaction happens Correct Answer water ...

OCR Biology Paper 2 - Ecosystems Questions With Verified Answers

Detailed A* level notes covering the whole topic of Cloning + Biotechnology (specification point 6.2.1). This is for the OCR A level Biology A course. These notes cover every single specification point within this topic and are concise but contain everything you need to know. I achieved an A* with these notes and am now a medical student. Topics covered: - Plant cloning - Animal cloning - Microorganisms - Biotechnology - Immobilised Enzymes

This is a detailed revision note of 55 pages of Module 6 OCR Biology A level, including all the topics (Cellular control, Patterns of inheritance, Manipulating genomes, Cloning and biotechnology, Ecosystems, Populations and sustainability). It includes diagrams and mathematical equations used and needed in this module.

What is the equation for magnification? - magnification = image size/actual size What are the pros of using light (optical) microscopes? - Relatively cheap, easy to use, portable for use in field, study whole organisms, view in real time, view in colour What are the cons of using light (optical) microscopes? - Limited magnification (x1500), limited resolution (200nm), difficult to view organisms What are the pros of using laser scanning (confocal) microscopes? - View living cells, view ...

What is the equation for magnification? - magnification = image size/actual size What are the pros of using light (optical) microscopes? - Relatively cheap, easy to use, portable for use in field, study whole organisms, view in real time, view in colour What are the cons of using light (optical) microscopes? - Limited magnification (x1500), limited resolution (200nm), difficult to view organisms What are the pros of using laser scanning (confocal) microscopes? - View living cells, view ...

This is a very detailed summary notes of 57 pages for OCR Biology A Module 5, including all the topics (Communication and homeostasis, Excretion, Neuronal communication, Hormonal communication, Animal and plant responses, Photosynthesis, and Respiration). It includes diagrams and photographs to assist the understanding of the processes.