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17 terms

Bacteria

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Bacteria
one-celled organisms with both plant and animal characteristics.
nonpathogenic
organisms which peform many useful functions, such as decomposing garbage and improving soil fertility.
pathogenic
bacteria are harmful and although in the minority, cause disease when they invade plant or animal tissue
saprophytes
a type of nonpathogenic bacteria, lives on dead matter
pathogenic
bacteria are harmful and although in the minoity, cause disease wjem they invade plant or animal or animal tissue
parasites
require living matter for their growth
cocci
round-shaped bacteria that appear singly or in the following groups
staphylococci
pus-forming bacteria that grow in clusters like a bunch of grapes
streptococci
pus-forming bacteria arranged in curved lines resembling a string of beads
diplococci
spherical bacteria that grow in pairs abd cause diseases
bacilli
short, rod shaped bacteria
spirilla
spirial or corkscrew-shaped bacteria
motility
self-movement
flagella
slender, hairlike extensions
cilia
locomotion
infection
occurs when body tissues are invaded by disease-causing or pathogenic bacteria
pus
fluid product of imflammation and contains white blood cells