test tube (e.g. if they were immersed at 20°C then place them in the test tube marked 20) 8. Leave them in for 15 minutes. 9. Repeat steps 4-8 for all the selected temperatures. 10. After the disks have been kept in the test tubes for 15 minutes‚ shake the tubes so that the pigment is released
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absorbed into the blood and carried to cells throughout the body. The things we eat turn into things such as carbohydrates‚ fats‚ and proteins. Carbohydrates are‚ any of a large group of organic compounds occurring in foods and living tissues and including sugars‚ starch‚ and cellulose. Protein‚ such as meat‚ eggs‚ and beans‚ consist of large molecules of protein that must be digested by enzymes before they can be used to build and repair body tissues. An enzyme in the juice of the stomach starts
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primary structure‚ secondary structure‚ tertiary structure and quaternary structure of proteins‚ and describe the types of bonding (hydrogen‚ ionic‚ disulfide and hydrophobic interactions) which hold the molecule in shape. (g) Analyse the molecular structure of a dimeric enzyme with a quaternary structure e.g. viral/HIV protease‚ as an example of a globular protein‚ and of collagen as an example of a fibrous protein‚ and relate these structures to their functions. (h) Explain the mode of action of enzymes
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The West Side story production put on by the Orlando Shakes theatre was written by play right Stephen Sondheim‚ and directed by Jim Helsinger. This play had spectacular acting‚ music and choreography‚ costume design‚ scenery‚ lighting‚ use of environmental sounds‚ and centralized messages. While sitting down to watch this play in the company of my ex boyfriend we had a few laughs over what was said. Tony being a Polish boy like me‚ and Maria being a Puerto Rican like my ex we had a bit of a connection
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AS Biology Unit 1 page 1 AQA AS Biology Unit 1 Contents Specification Biological Molecules Cells Human Physiology Disease Appendices Chemical bonds Carbohydrates Lipids Proteins Biochemical Tests Enzymes Eukaryotic Cells Prokaryotic Cells Cell Fractionation Microscopy The Cell Membrane Movement across Cell Membranes Exchange The Gas Exchange System Lung Diseases The Heart Coronary Heart Disease The Digestive System Cholera Lifestyle and Disease Defence
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straight into the bloodstream (HIV‚ AIDS) The body’s natural defence includes: The skin o Body has a natural flora of bacteria keeping the pH levels low‚ o Sweat and oil is antiseptic o Blood clots by soluble blood protein fibrinogen is converted into an insoluble fibrous protein – fibrin‚ which creates a mesh for platelets to stick onto o White blood cells are attracted to open areas‚ to prevent infection Gas Exchange System: o Mucus lines the passageways trapping invading pathogens o These
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from the filtrate. The filtrate was poured into a test tube until the test tube was 75% full. The test tube was then tilted to a 45° angle‚ and 95% ethanol was slowly poured in so that it dripped down the wall of the test tube‚ making sure not to shake the test tube. The ethanol formed a layer on top of the filtrate so that there were two layers in the test tube: one red (raspberry filtrate) and one colorless (ethanol). The DNA should have started to appear as a white viscous material. Lastly‚ a
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that build proteins according to instruction from the DNA Overview of Eukaryotic Cells Plant cells have: 1) Central vacuole 2) Cell Wall 3) Chloroplast Animal cells have: 1) Centriole 2) Lysosome 3) Flagellum Membrane Structure The plasma membrane is the boundary that separates the living from its non-living environment The plasma membrane can regulate the traffic of chemical into and out of the cell. Plasma membrane and others composed of mostly lipids and proteins. Lipids
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Exam #3 Protein Folding & Post-translational Modifications -What are post-translational modifications? - are modifications that a proteins undergoes to achieve its mature state. Such as cutting‚ folding‚ splicing and other processes. -How do proteins achieve their final conformation? - A protein achieves its final conformation by spontaneously folding. All the information that the protein needs as to how to fold is already located in the amino acid sequence of the protein. -Why is
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Proteins are arguably the most important things that people know the least about. As OpenStax CNX puts it‚ “Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules”. Proteins are “Macromolecules that contain nitrogen as well as carbon‚ hydrogen‚ and oxygen”(Miller‚ Kenneth R.‚ and Joseph S. Levine 48). Macromolecules are exceedingly large molecules that can be made up of several lesser molecules called proteins.
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