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Grade 7 Chapter 7:2,7:3,7:4
Bacteria
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Other
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07/28/2006

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Term
bacteria
Definition
are prokaryotes whose genetic material is not found in a nucleus; single celled
Term
flagella
Definition
a long whiplike structure that allow the bacteria to move in liquids
Term
binary fission
Definition
one cell divides to form 2 identical cells
Term
asexual reproduction
Definition
reproduction needing only 1 parent that produces offspring that are identical to the parent
Term
sexual reproduction
Definition
reproduction needing 2 parents
Term
conjugation
Definition
one bacterium transfers genetic material to another bacterium then the cells separateas
Term
endospore
Definition
a small internal resting cell that is formed when food becomes scarce or conditions become poor
Term
pasteurization
Definition
a process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food
Term
decomposers
Definition
feed on dead things by breaking down organism
Term
protist
Definition
a eukaryotic organism that cannot be classified as an animal, plant or fungus
Term
protozoan
Definition
an animal-like protist
Term
pseudopods
Definition
extension of the cell membrane and cytoplasm "false foot" ; used to capture and eat food
Term
contractile vacuole
Definition
takes in excess water from the protist, when it is full, it suirts the water out of the cell
Term
cilia
Definition
small hairlike projections on the outside on their cells; helps organism to move and sweep food toward themselves
Term
symbiosis
Definition
a close relationship between 2 species where one of the species benefit
Term
mutualism
Definition
both partners benefit from living together
Term
spore
Definition
a tiny cell that is able to grow into a new organism
Term
algae
Definition
plant-like protists; autotrophs
Term
fungi
Definition
a eukaryotic organism that has cell walls, uses spores to reproduce,and is a heterotroph that feeds by absorbing its food
Term
hyphae
Definition
are made up of threadlike tubesthat make up the bodies of multicellular fungi
Term
fruiting body
Definition
where spore production takes place
Term
budding
Definition
a form a asexual reproduction ;a part of the yeast cell pushes out of the cell wall and forms a "bud"
Term
lichen
Definition
a mutualistic relationship made up of fungus and an alga or an autotrophic bacteria
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