Ultracentrifugation Study guides, Class notes & Summaries

Cells and their structures/replication summarised in the Cornell Method, which allows students to learn the content quickly and easily, as it is summarised in understandable bullet points with diagrams or paragraphs below. There is also a key word section which allows students to learn via association of key words, also showing links between different topics nicely.

AQA AS level biology questions and answers already passed What are the three ways a pathogen can damage hosts cells? 1) rupturing them to release nutrients inside them 2) breaking down nutrients inside the cell for their own use. This starves and eventually kills the cell. 3) replicating inside the cells and bursting them when they're released What are the two ways pathogens cause disease? 1) production of toxins 2) cell damage What are the lifestyle factors that can affect your chances of ge...

Study guide test 2 Strategies of nucleotide synthesis: precursors, when is ribose added, how is ribose activated and added, what are first purines and pyrimidines made, how are the various forms of THF made and/or interconverted, regulation of purine synthesis (where are committed steps), how is a balance between AMP and GMP achieved, how do folic acid antagonists impair purine synthesis. • Pyrimidines: base is made before adding the ribose sugar • Purines: ribose is already present  suga...

Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present Describe a chemical test you could carry out to show that a piece of coconut contains lipids. [3] (Crush in) ethanol / alcohol; Add (to) water (Order of adding is critical for this point); Emulsion / whi...

What is the function of the cell membrane? - ANSWER To control what enters and leaves the cell, acts as a barrier between the cell and its environment. What structural feature of the cell membrane allows substances to enter/leave? - ANSWER Partially permeable What is the fluid mosaic model? - ANSWER States that a membrane is a fluid structure (because phospholipids are constantly moving) with a "mosaic" of various proteins embedded in it Describe the structure and function of phosphol...

AQA A level Biology Revision EXAM QUESTIONS WITH 100% CORRECT ANSWERS Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] - ANSWERS ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present Describe a chemical test you could carry out to show that a piece of coconut contains lipids. [3] - ANSWERS ...

An in-depth informative booklet on cells and membranes including prokaryotes, eukaryotes, akaryotes, their organelles, microscopy and more. Also includes required practicals based on this topic, useful summary questions and the specification.

EXAMINATION TESTS OF MICROBIOLOGY VIROLOGY AND IMMUNOLOGY DISCIPLINE Basic bacteriology 1. Who first designed the microscope, saw and sketched microbes? A. Louis Pasteur B. Robert Koch C. Ilya Mechnikov D. Dmitri Ivanovsky E. Antonie Philips van Leeuwenhoek 2. Without which structures, bacteria cannot carry out their activities? A. Capsule B. Spors C. Volutine granules D. Nucleoid E. Flagella 3. What structure determines the shape of a bacterial cell? A. Cytoplasmic membrane B. Capsid C. Capsu...

Complete AQA A Level Biology notes on cell organelles with diagrams, definitions to support your understanding. Details include: Eukaryotic Cells Prokaryotic Cells Microscopy Cell Fractionation and Ultracentrifugation

METHODS FOR THE STUDY OF HIGHER LEVELS OF PROTEIN STRUCTURE AND ORGANIZATION. Various Spectroscopic Methods Are Employed in Evaluating Protein Structure and Function Ultraviolet Light Spectroscopy Fluorescence Spectroscopy Optical Rotatory Dispersion and Circular Dichroism Spectroscopy Proteins Can Be Separated and Characterized Based on Molecular Weight or Size Ultracentrifugation: Definition of Svedberg Coefficient