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Definition
| composed of protein and lipid (fat) molecules |
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Term
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Definition
- acts as a boundary layer to contain the cytoplasm (fluid in cell)
- interlocking surfaces bind cells together
- selectively permeable to select chemicals that pass in and out of cells |
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Definition
- a non-living secretion of the cell membrane, composed of cellulose
- cellulose fibrils deposited in alternating layers for strength
- contains pits (openings) that make it totally permeable |
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Definition
- provides protection from physical injury
- together with vacuole, provides skeletal support |
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Definition
| - a single layer of unit membrane enclosing fluid in a sac |
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Term
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Definition
- produces turgor pressure against cell wall for support
- stores water and various chemicals
- may store insoluble wastes |
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Term
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Definition
| includes the nuclear envelope, nucleolus, chromatin, and nucleoplasm |
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Term
| nuclear envelope structure |
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Definition
-two unit membranes with a fluid-filled space
-nuclear pores present
-outer membrane may be continuous with endoplasmic reticulum |
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Term
| nuclear envelope function |
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Definition
-selectively permeable to control movement in or out
-contains nuclear contents |
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Term
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Definition
| composed of long thin strands of DNA |
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Term
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Definition
| contains instructions that control cell metabolism and heredity |
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Term
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Definition
| non-membraneous matrix of RNA (ribonucleic acid) and protein |
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Definition
- instructions in DNA are copied here
- works with ribosomes in the synthesis of protein |
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Term
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Definition
- composed of a double layer of modified membrane (protein, chlorophyll, lipid)
- inner membrane invaginates to form layers called "grana" (sing., granum) where chlorophyll is concentrated |
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Definition
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Term
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Definition
chlorophyll
Carbon Dioxide + Water ---------------> Glucose + Oxygen
radiant energy (food) |
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Term
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Definition
- nine triplets of microtubules form one centriole
- two centrioles form one centrosome |
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Term
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Definition
| forms spindle fibers to separate chromosomes during cell division |
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Term
| endoplasmic reticulum structure |
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Definition
- sheets of unit membrane with ribosomes on the outside
- forms a tubular network throughout the cell |
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Term
| endoplasmic reticulum function |
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Definition
- transports chemicals between cells and within cells
- provides a large surface area for the organization of chemical reactions and synthesis |
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Term
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Definition
| non-membraneous, spherical bodies composed of RNA (ribonucleic acid) and protein enzymes |
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Term
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Definition
| site of protein synthesis |
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Term
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Definition
- stacks of flattened sacs of unit membrane (cisternae)
- vesicles pinch off the edges |
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Term
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Definition
- modifies chemicals to make them functional
- secretes chemicals in tiny vesicles
- stores chemicals
- may produce endoplasmic reticulum |
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Term
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Definition
- composed of modified double unit membrane (protein, lipid)
- inner membrane infolded to form cristae |
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Term
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Definition
| site of cellular respiration ie. the release of chemical energy from food |
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Term
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Definition
| Glucose + Oxygen ------> Carbon Dioxide + Water + Energy (ATP) |
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Term
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Definition
- membrane bound bag containing hydrolytic enzymes
- hydrolytic enzyme (i.e. using water to split chemical bonds) |
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Term
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Definition
| break large molecules into small molecules by inserting a molecule of water into the chemical bond |
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