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flashcards from class
bacteria
Most _________ function as independent single-celled, unicellular organisms
spirilla
_______ is occasionally found in short chains
spirochetes
Rarely remain attached after cell division
motility
The primary function of flagellum is
monotrichous
_________ is single flagellum
lophotrichous
_______ is small bunches or tufts of flagella emerging from the same site
amphitrichous
_________ has flagella at both poles of the cell
chemotaxis
_________ is movement of bacteria in response to chemical signals
spirochetes
______ is corkscrew-shaped bacteria
Fimbria/fimbriae
Small, bristle-like fibers sprouting off the surface of many bacterial cells is called
S
Single layers of thousands of copies of a single protein linked together is a ____ layer.
slime
_________ layer protects against loss of water and nutrients
cell wall
What helps determine the shape and provides structural support of a bacterium?
Lysis
Rupture of a cell means
mycoplasmas
What bacteria naturally lacks a cell wall?
porin proteins
Special membrane channels that only allow certain chemicals to penetrate are
gram-negative
An outer membrane of ________ bacteria contributes an extra barrier making it more difficult to inhibit or kill than gram-positive bacteria.
cytoplasm
What serves as a pool for building blocks for cell synthesis or sources of energy?
bacterial chromosome
The hereditary material of most bacteria exists in the
plasmids
Nonessential pieces of DNA are called ______.
ribosomes
Site of protein synthesis are the
sporulation
__________ is induced by environmental conditions
bacillus
Bacterial Endospores are produced by _________ , Clostridia, and Sporosarcina
Bacillus anthracis
Agent of anthrax is
Clostridium botulinum
Cause of botulism is
extremophiles
A microorganism of the archaean, that lives in conditions of extreme temperature, acidity, alkalinity, or chemical concentration is an
Systematic
A comprehensive view of bacterial and archaeal relatedness is Bergey’s Manual of ________Bacteriology
Determinative
Bergey’s Manual of _______ Bacteriology is based entirely on phenotypic characteristics.
Gracilicutes
________________ are gram-negative with thin cell walls
Firmicutes
_________ are gram-positive with thick, strong cell walls
Tenericutes
________ lack a cell wall and are soft
Mendosicutes
___________ are primitive cells with unusual cell walls and nutritional habits
Bacterial species
A collection of bacterial cells which share an overall similar pattern of traits is
strain
Bacteria of the same species that have differing characteristics are Subspecies, _______ , or type.
