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| one of the two prokaryotic domains, the other being Archaea |
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| a virus that infects bacteria; also called a phage. |
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| a dense object lying along the inside of the nuclear envelope in female mammalian cells, representing the inactivated X chromosome. |
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| a eukaryotic cell organelle consisting of a 9+0 arrangement of microtubule triplets; may organize the microtubule assembly of a cilium or flagellum; structurally identical to a centriole. |
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| a substance that reduces the hydrogen ion concentration of a solution. |
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| one form of the secondary structure of proteins in which the polypeptide chain folds back and forth, or where two regions of the chain lie parallel to each other and are held together by hydrogen bonds. |
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| characterizing a body form with a cetral logitudinal plane that divides the body into two equal, but opposite halves. |
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| the type of cell division by which prokaryotes reproduce. Each dividing daughter cell recieves a copy of the single parental chromosome. |
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| a fluid-containing space between the digestive tract and the body wall. |
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| an asexual means of propogation in which outgrowths from the parent form and pinch off to live independently or else remain attached to eventually form extensive colonies. |
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| a substancd that consists of acid and base forms in a solution and that minimizes changes in pH when extraneous acids or bases are added to the solution. |
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| a type of photosynthetic cell arranged into tightly packed sheaths around the veins of a leaf. |
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| the movement of water due to a difference in pressure between two locations. |
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