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to my dear students with all my best wishes. to my dear students. dear students have a good and successfull academic year! my dear students chromosomes genes alleles mutations by hamdy karim genetics engineering and human genome. chapter 4 section 1 and 2 to my astronomy. floating and sinking by hamdy karim. acceleration study well and be ready or your final test. remember that you need to understand. dear my students (scientists of the future)! acceleration by hamdy karim motion respiration in detail by hamdy karim fermentation by hamdy karim overview of cellular respiration by hamdy karim. overview of photosynthesis by hamdy karim. photosynthesis in detail by hamdy karim. chemical energy and atp by hamdy karim endocytosis and exocytosis by hamdy karim active transport diffusion and osmosis by hamdy karim cell organelles by hamdy karim cell structure & function by hamdy karim photosynthesis by hamdy karim life is cellular by hamdy karim. base and salts by hamdy karim acids types of chemical reactions by hamdy karim chemical reactions by hamdy karim