Prescott's Microbiology Chapter 3
Questions and Answers Verified
bacillus - Answer a rod-shaped bacterial or archael cell
capsule - Answer a layer of well-organized material, not easily washed off, lying outside the cell wall of
some microbes
cell envelopes - Answer the plasma membrane and all surrounding layers external to it
chemotaxis - Answer the movement of a micro-organism toward chemical attractants and away from
chemical repellents
coccus - Answer a spherical bacterial or archael cell
endospore - Answer atan extremely heat and chemical resistant, dormant, thick-walled spore that
develops within some gram positive bacteria
fimbriae - Answer fine, hair-like protein appendages on some bacterial and archael cells; some help
attach cells to surfaces and others are involved in a type of twitching motility. AKA pili
fluid mosaic model - Answer the currently accepted model of cell membanes in which the membrane is
a lipid bilayer with integral proteins buried in the lipid and peripheral proteins more loosely attached to
the membrane surface
gas vacuole - Answer a proteinaceous cytoplasmic organelle composed of clusters of gas-filled vessicles;
used by aquatic bacteria and archaea to change location in a water column
glycocalyx - Answer a network of polysaccharides extending from the surface of some cells
Questions and Answers Verified
bacillus - Answer a rod-shaped bacterial or archael cell
capsule - Answer a layer of well-organized material, not easily washed off, lying outside the cell wall of
some microbes
cell envelopes - Answer the plasma membrane and all surrounding layers external to it
chemotaxis - Answer the movement of a micro-organism toward chemical attractants and away from
chemical repellents
coccus - Answer a spherical bacterial or archael cell
endospore - Answer atan extremely heat and chemical resistant, dormant, thick-walled spore that
develops within some gram positive bacteria
fimbriae - Answer fine, hair-like protein appendages on some bacterial and archael cells; some help
attach cells to surfaces and others are involved in a type of twitching motility. AKA pili
fluid mosaic model - Answer the currently accepted model of cell membanes in which the membrane is
a lipid bilayer with integral proteins buried in the lipid and peripheral proteins more loosely attached to
the membrane surface
gas vacuole - Answer a proteinaceous cytoplasmic organelle composed of clusters of gas-filled vessicles;
used by aquatic bacteria and archaea to change location in a water column
glycocalyx - Answer a network of polysaccharides extending from the surface of some cells
