Term
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Definition
All organisms are composed of cells
all cells come only from preexisting cells
smallest units of life |
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Term
| Cell size restricted by.... |
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Definition
Surface/Volume ratio
surface is membrane
Volume is cytoplasm |
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Term
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Definition
Lack a membrane-bound nucleus
structurally simple |
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Term
| Two Prokaryotic domains... |
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Definition
Bacteria[bacillus, coccus, spirilla]
Archaea[live in extreme conditions] |
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Term
| Cell Envelope compose of... |
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Definition
| Glycocalyx, Cell Wall, Plasma Membrane |
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Term
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Definition
Layer of polysaccharides outside cell wall
may be slimy and easily removed, or
well organized and resistant to removal (capsule) |
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Term
| Plasma membrane properties |
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Definition
Like in eukaryotes
form internal pouches (mesosomes) this increases surface area |
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Term
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Definition
semifluid solution
Bound by plasma membrane
Contains inclusion bodies
DNA is NOT membrane bound; located in nucleoid |
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Term
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Definition
known species
-cells contian; membrane bound nucleus, specialized organelles, plasma membrane. |
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Term
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Definition
| Command center of cell, usually near center |
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Term
| nucleus is seperate from cytoplasm by |
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Definition
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Term
| Nucleus contains _______ in semifluid nucleoplasm |
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Definition
chromatin
-chromatin contains DNA of genes
-chromatin condenses to form chromosomes |
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Term
| dark nucleus comosed of... |
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Definition
rRNA
-produces subunits of ribosomes |
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Term
| Ribosomes serve in _________ and are composed of _________. |
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Definition
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Term
| Ribosomes may be locate on the.... |
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Definition
| Endoplasmic reticulum or free in the cytoplasm |
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Term
| endomembrane system restrict _________ reactions to specific compartments within cell |
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Definition
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Term
| endomembrane system consists of.... |
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Definition
-nuclear envelope
-membranes of endoplasmic reticulum
-golgi apparatus
-Vesicles |
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Term
| Rough endoplasmic reticulum [ER] |
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Definition
-contains ribosomes on cytoplasmic side
-protein anabolism |
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Term
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Definition
-No ribosomes
-synthesis of lipids therefore found abundantly in glands... such as liver |
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Term
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Definition
-Consists of 3-20 flattened, curved saccules
-modifies proteins and lipids |
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Term
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Definition
| membrane-bound vesicles (not in plants) produced by golgi apparatus |
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Term
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Definition
| similar to lysosomes but active in lipid metabolism and catalyze reactions that produce hydrogen perozide |
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Term
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Definition
Membranous sacs that are larger than vesicles;store marterials that occur in excess
-plants typically have a central vacuole, not found in animals |
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Term
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Definition
-bounded by double membrane
-inner membrane infolded
-green due to chlorophyll |
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Term
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Definition
| captures light energy to drive cellular machinery |
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Term
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Definition
-bounded by double membrane
-involved in cellular respiration
-produce most of ATP utilized by the cell |
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Term
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Definition
-maintains cell shape
-assists in movement of cell and organelles |
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