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A LEVEL BIOLOGY REVISION TEXT WITH DETAILED ANSWERS
ribe how two-way chromatography is carried out. [2] - CorreCt Answers -Run chromatogram then turn through 90/right angle; With a different solvent; Explain the advantage of using two-way chromatography to separate short polypeptides. [2] - CorreCt Answers -Spreads spots/polypeptides out more/ make sure spot only contains one substance; Explain how inhibitors affect the rate of enzyme-controlled reactions. [6] - CorreCt Answers -Statement about two types, competitive and noncompetitive; Competitive: Similar shape to substrate;Inhibitor can enter/bind with active site (of enzyme);Non-competitive: Affect/bind to enzyme other than at active site; Distorts shape of active site; Inhibitors: Prevent entry of/binding of substrate to active site; Therefore fewer/no enzyme-substrate complexes formed;
£5.00 Preview Remove"Mastering Radiographic Positioning: Unlocking Clear Views of the Lower Extremities for Accurate Diagnosis!"
Radiographic positioning of the lower extremities involves precise techniques to obtain clear and accurate images of structures such as the hips, thighs, knees, legs, ankles, and feet. Proper positioning ensures optimal visualization of bones, joints, and soft tissues, aiding in the diagnosis of fractures, deformities, and other abnormalities. Key positions, including anteroposterior (AP), lateral, and oblique views, are used to capture different angles and details of the lower limb. Attention to alignment, patient comfort, and correct use of radiation settings is essential for producing high-quality diagnostic images while minimizing patient exposure. This process is vital in orthopedic evaluations and treatment planning.
£2.50 Preview RemoveIntroduction To Photosynthesis
Photosynthesis, occurring in chloroplasts, transforms light energy into chemical energy. During the light-dependent reactions, ATP and NADPH are generated, while the Calvin cycle utilizes these to convert carbon dioxide into glucose. Oxygen is released as a byproduct, sustaining life and regulating Earth's climate through the global carbon cycle. This process is fundamental to the energy flow supporting ecosystems and the diversity of life on our planet.
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