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Bio 1 quiz 4
| Question | Answer |
|---|---|
| cells are | the fundamental units of life |
| Schlerdernt and Schwann | creators of cell theory |
| who created first microscope | Robert Hook in England |
| when was the first microscope created and first cell scene? | 1665 |
| large surface volume of cells | allows transport easily |
| GIGO | goodies in garbage out |
| types of microscopy | light microscopy and electron microscopy |
| magnification | increase size of object |
| resolution | minimum distance clearer image |
| smallest resolution in microscope | blue light - 0.2 Um (micrometers) |
| vesicles | transport material outside of the cell |
| lysosome | breaking down structures and cells taht the cell doesn't need |
| plant cells have to ability to perform | photosynthesis |
| phagocytosis | ability of cells to secrete products |
| secretion | puts something outside of the cell |
| unaided eye - how small you can see | things you can see , an egg, frog, egg up until .2mm |
| light microscope - how small you can see | 1/2 micrometer. plant and animal cells. nucleus, bacteria, mitochondria |
| electron microscope- how small you can see | 0.1 micrometers. smallest bacteria, viruses, ribosomes, proteins, lipids, small molecules , atoms |
| cell fractionation | break open cell and seperate components to observe |
| how to fractionate a cell | homogenate: blend it ,put in centrifuge get it to seperate into supernatant and pellet |
| pellet | rich in nuclei and cellular debris, depending on how fast it is centrifuged. |
| prokaryotic cell | unicellular |
| parts of prokaryotic cell | flagellum, cell wall, capsule, dna, ribosomes, plasma membrane |
| con of having one big cell | lower surface area ratio |
| surface area | height x width x number of sides x number of boxes |
| electron scope vs light microscope | electron microscope is 1000x better |
| resolution of unaided eye | 0.2mm |
| resolution of light microscope | 200 nm |
| resolution of electron microscope | 0.2nm |
| cell fractionation step 1 | homogenization - blender |
| cell fractionation step 2 | seperate cell based on cell |
| cell fractionation step 3 | centrifuge - faster spin more g force. |
| where did big cells go when you centrifuge | to the bottom, pellet, they don't need high velocity to be seperated |
| plasma membrane - prokaryotic cell | surrounds cytoplasm |
| DNA- prokaryotic cell | contains genetic information for reproduction. no nucleus |
| ribosomes | protein synthesis of enzymes ( metabolism) |
| cytoplasm | inside cell |
| cell wall | outside of cell |
Created by:
michelle5671
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