Term
| 1. cells are the structural unit for all living things this means all living things are made of cells. 2. cells are the functional inits for all living things this means that all metabolic activities life activities happen inside cells. 3. cells come from previously living cells |
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Definition
| scientist accept the cell theory as true as for all cells. the cell theory remains a theory because of three important exceptions. |
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Term
| viruses are not made of cells- they are to small and do not have the normal structures in cell. virus is sub-cellular. 2 cell structures can reproduce independently of the rest of the cell ex. mitochondria and chloroplasts. 3. the first cell on earth could not have come from previously living cell. |
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Definition
| cells are the basic unit of life |
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Term
cell organelles-cell organelles are small structures within a cell that perform specific jobs or functions that help keep the cell alive
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Definition
| cell wall- found in plant cells only it can be considered the only non- living part of any cell we will study the cell wall protects supports and maintains the shape of plants cells |
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Term
| cell membrane- also called the plasma membrane the boundry between cell outside enviroment |
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Definition
| selectively permiable- the cell membrane controls the tranport of material in and out of the cell |
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Term
| double layer lipid molecules(look like lollipops) |
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Definition
| -proteins embedded (inside of) int the lipid layer |
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Term
| - involved in communication between cells |
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Definition
| - receptor proeins aid in transfer of large molecules into and out of cells tranfer proteins |
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Term
| receptor proteins molecules in the cell that receive messages from signal molecules like hormones and transmit across cell membrane |
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Definition
| the message received by receptor proteins on cell membranes control the metabolic procceses of that cell important to cell to cell communication have a specific shape |
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Term
| cytoplasm- clear jelly like material thats inside cell membrane and outside nucleus |
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Definition
| - location where all metabolic axctivities take place within the cell |
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Term
| - most cell organelles and other dissolved compounds are found in cytoplasm |
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Definition
| cyclosis- movement of cytoplasm within the cell membrane |
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Term
| cyclosis of the cytoplasm transports necessary materials for use inside the cell and wastes for removal from the cell |
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Definition
| mitochondria- rod shaped organelles found in the cytoplasm of all cells that have nucleus |
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Term
| - the metabolic process of respiration occurs in the mitochondria |
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Definition
| - mitochondria release the energy stored in food (chemical energy) for use by the cell to power all other metabolic processes |
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Term
| - cells that require more energy( like muscle cells)O contain more mitochondria than cells that require less energy (skin cells ) |
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Definition
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Term
| ribosomes - sythesize proteins |
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Definition
| ribosomes are the sites where all proteins are synthesized (mad) within the cell |
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Term
| ribosomes are located along the edge of the endoplasmic reticulum and within the cytoplasm. |
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Definition
| ribosomes are very small organelles shown on the endoplasmic reticulum or within the cytoplasm as a small dot. |
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Term
| ribosomes perfoerm the metabolic process of synthesis |
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Definition
| vacuoles- appear to be empty spaces surrounded by a membrane |
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Term
centriole - there are two centrioles found in animal cells only.
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Definition
| centrioles function during cell division to help seperate the chromosomes |
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Term
| each centriole is a group f tubes arranged in a circular bundle. |
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Definition
| the two centrioles are arranged at right angled to each other and are found near the nucleus. |
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Term
| chloroplast- found in plant cells only |
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Definition
| site for photosynthesis in plant cells location whre plant produces its food. |
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Term
| contains green pigment chlorophyl can reproduce independently. |
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Definition
| cillia and flagella - hair like organelles that extened from the cell membrane ang give the ability to move (locomotion) |
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Term
| flagella- fewer and larger |
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Definition
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