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| the smallest living unit and basic unit of function and structure for all living things |
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| living cells average approximately ___ water |
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| the _____ contains the genetic information |
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| genetic information is contained in the |
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| what is the plasma membrane |
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| it is a semipermeable membrane that separates the contents of the cell from the surrounding fluid |
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| what is the interstitial fluid |
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| it is the fluid that is around cells that contains substance such as amino acids, sugars, fatty acids hormones neurotransmitters and salts |
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| what does the term selectively permeable refer to in reference to the plasma membrance |
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| it contains pores and chanels that allow only particles of teh right size or the the chemical nature to pass |
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| is the fluid matrix found between the plasma membrance and the nucleus that acts as scaffolding for the organelles |
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| "little organs". specialized units in the cel that perform certain functions |
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| are the locations for cellular respiration, sites of energy production. |
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| adenosine triphosphate, the chemical the cell uses to store and transfer energy within itself. produced by the mitochandria |
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| the sites of protein synthesis in the cell. some float freely and others are attachd to the rough endoplasmic reticulim |
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| what is endoplasmic reticulum |
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| serves as a means for transport within the cell and is made up of many channels |
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| rough endoplasmic recticulum |
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| has ribosomes on its surface, serves to store and deliver the proteins made by the attached ribosomes |
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| smooth endoplasmic recticulum |
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| has no ribosomes attached. preforms varying functions including the storage of enzymes and minerals and the folding of proteins. thoought to be believed in detox of chemicals and metabolizing fats |
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| modifies nad packages proteins destined for the cell or for export from the cell |
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| are sacs that contain strong digestive enzymes. they digest cell structures that are no longer living or that are malfunctioning and for digestive waste |
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| differnces in plant cells |
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they have -cell walls
-chloroplasts
-vacuoles (always found in
plant cells) |
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| in reference to plants what purpose does the cell wall serve |
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| it's essential for protection of the cell, the maintenance of the shape and water balance. they contain chloroplasts. |
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| contain chlorophyll which is neccessary for photosyntheses |
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| compartments in the cytoplasm that act as places for secretion, excretion and storage. found in all plants and fungus cells and some animal. |
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| where the DNA is found inside the nucleus of a non dividing cell. they are loosely structured. |
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| when cells began to divide the chromatin orgainzes them selves into organized condensed rods containing the DNA |
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| is a cell that fuses with another cell during fertilization (conception) in organisms that reproduce sexually. |
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| an organism whose cells contain complex structures enclosed within membranes, the nucleus, or nuclear envelope, within which the genetic material is carried |
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| are a group of organisms whose cells lack a cell nucleus, or any other membrane-bound organelles. |
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| The cells produced by meiosis are gametes or spores. In many organisms, including all animals and land plants (but not some other groups such as fungi), gametes are called sperm and egg cells. |
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| cells in a common structure make up_____' |
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muscle tissue
epithelial tissue
nervous tissue
connective tissues |
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| examples of muscle tissue |
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| skeletal, cardiac and smooth |
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| examples of epithelial tissue |
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| skin, the lining of organs |
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| examples of nervous tissue |
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| examples of connective tissue |
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| cartilage, blood, fat, bone |
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| various tissues are combined into an _____ |
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| a number of organs working together form an ______ ______. |
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| highest level of cell organization |
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