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27 Cards in this Set
- Front
- Back
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Who is Hooke?
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He named cells, which he identified in a cork
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Who is Leeuwenhoek?
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He observed living microbes in his microscope in rainwater, plaque, blood...
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Elaborate:
1839 Schwann and Schleiden |
They developed cell theory-basic unit of structure and function of all organisms; activity of the organism depends on the activity of its cells.
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Who is Virchow?
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biogenesis-living cells can come only from other living cells.
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Cell ______ and _____ varies according to __________.
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shape, size, function
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Prokaryote
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simplest cell, yet can live in any enviroment.
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What is a Eukaryote?
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it is larger, more complex and specialized-have nucleus and other membrane- enclosed organelles, pairs of chromosomes, moving cytosol, mitotic cell division, and cellulose in cell walls.
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SOTC
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system, organ, tissue, cell.
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What are prokaryotic cell walls?
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lipids, proteins, carbohydrates (no cellulose), one circular chromosome of DNA attached to the plasma membrane; amny are helpful- photosynthesis, antibiotics, decomposers in enviroment, used in food, some are deadly.
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Eukaryotes are____
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comparted seperates organelles for division of labor- efficient.
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Function: Nucleus
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control center for all activity.
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Nucleoli
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synthesis of RNA (for protein making).
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Nuclear envelope
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double membrane semi permeable.
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Chromosomes
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contain DNA for heredity
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Cytoplasm
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semi-fluid (cytosol) and all organelles
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Mitochondria
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ATP synthesis for respiration, "powerhouse" for energy.
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Cell (plasma) membrane
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double semi permeable; controls in/out of materials
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Endoplasmic Reticulum
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network system of tubes connecting organelles smooth/rough (has ribosome)
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Ribosomes
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small bodies which proteins are made in
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Golgi Apparatus
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flat sacs that package and secrete molecule for export.
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Vacuoles
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vesicles for storage of salts, enzymes, food , pigments, H2O (contractile to pump water in protests); larger in plants.
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Cytoskelton
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protein network for shape, movement-made of microtubes
Flagella-whip like cillia- short hairs |
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Cell Wall
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nonliving, rigid; gives support for plants only
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Chloroplast
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- green plastids for plants only
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lYSOSOMES
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have enzymes; digest waste and bacteria
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centrioles
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tube like; for cell reproduction in mitosis
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Membranes
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double layers of phospholipids with embedded proteins. Sugars attach to lipids and proteins from the unique surface of cells used for their recognition.
fluid mosaic model- fluidity and asymmetry |
