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GCSE EDEXCEL BIOLOGY TOPIC 9 ECOSYSTEMS & MATERIAL CYCLES
notes with specification points clear, concise, detailed, simple - but quality Higher Grade 9 if you learn it
£2.00 Preview RemoveParts of the Brain - A level - higher human biology - 20 pages
this covers 6 parts of the brain and their functions and locations as well as other information about the brain there are also exam style questions and there answers this is all at the "higher" qualification levels of detail or A-Level for england. there is 20 slided in this listing it has a elegant design with pictures and diagrams bullet points and links to external resources like youtube videos that complement the powerpoint slides.
£2.49 Preview RemoveRespiratory and Digestive System Problem Set
Contains practice problems on the respiratory and digestive systems. Functions of erythrocytes (red blood cells) and leukocytes (white blood cells). Atherosclerosis. Low density lipoprotein (LDL) and high density lipoprotein (HDL). Cilia and epithelium on trachea. Pathway of air. Partial pressure of oxygen and carbon dioxide. Countercurrent exchange and gas exchange. Oxygen transporter: hemoglobin. pH changes and oxygen saturation. Cooperative binding. CO2 transport in the blood. Carbonic anhydrase. Breathing center in the medulla controls breathing rate. Detects carbon dioxide and pH levels in the blood. Saliva contains amylase, which breaks down starch and carbohydrates. Peristalsis. Secretory cells in stomach wall. Parietal cells. Chief cells. Mucus cells. Hydrochloric acid. Pepsinogen and pepsin. Zymogen. Trypsin activates procarboxypeptidase into carboxypeptidase, and chymotrypsinogen into chymotrypsin. Chymotrypsin cleaves polypeptides. Gall bladder. Olestra. Liver. Hormones.
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