BIOL 103 Lecture Notes - Lecture 12: Golgi Apparatus, Primitive Cell, Optical Microscope
11 Oct 2016
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Definition: cells are the simplest collection of matter that can live. Compound microscope: combine two lenses to get a high magnification. Light source: beams a large amount of light through the stage. Adjustment knob: course adjustment and fine adjustment. Practical application: find the inner workings of viruses. Most cells cannot be seen without a microscope: bacteria are the smalls and require magnifications up to 1,000x. Can see viruses such as hiv: plant and animal cells are 10 times larger than most. Flagella: specialized structures in order to obtain food as it repeals the organism forwards. Capsules: protective sheet allowing it to make it difficult to kill with drugs. Pili: hang on to other organisms and anchor on. Endoplasmic reticulum: produce the proteins and hormones. Shared features: plasma membrane: controls the movement of molecules into and out of cell. Phospholipid bilayer: keep stuff out (toxins) and bring stuff in (gases and nutrients) Hydrophilic (water loving) heads outward and hydrophobic tails in.
