BIO374H5 Lecture Notes - Lecture 2: Giemsa Stain, Heat Treating, Streptococcus Pneumoniae

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2 Nov 2017
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Cell contains genetic material called dna ( deoxyribonucleic acid) Genes direct the protein synthesis, in uencing our behaviour, determining our physical appearance, and susceptibility to various genetic disorders. Plasma membrane: double-layered structure of lipids and proteins surrounding its outer surface. Cytoplasm: jelly-like substance in which organelles and nucleus reside. Includes: true bacteria (eukaryotes); blue-green algae (cyanobacteria), and archaea. Prokaryotes have a plasma membrane and another outer layer called the cell wall protecting the cell. They also have ribosomes(used for protein synthesis) The cytoplasm contains dna (single circular molecule); in the nucleiod region contacted the plasma membrane. They sometimes also have a tail called agella for locomotion. True nucleus", because it contains a membrane enclosed nucleus and many organelles. Some lipids have sugar groups attached to it sometimes: functions: Transporting material into and out of the cell. Maintains a resting potential that is essential for the functioning of excitable cells.

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