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Terms in this set (52)
Characteristics of prokaryotes
Microscopic, unicellular, lack nuclei and membrane-bound organelles
Gel-like coating outside the cell wall of a bacterium. If compact, it is called a capsule; if diffuse, it is called a slime layer.
A dense region of DNA in a prokaryotic cell.
A short, thick, hair like protein structure that allows a bacterium to attach to other bacteria and surfaces
Double-stranded DNA circle containing extra genes
organelles made of protein and RNA that direct protein synthesis in the cytoplasm
long fibers of proteins that encircle the cell just inside the cell membrane and contribute to the shape of the cell
Specialized appendage attached to the cell by a basal body that holds a long, rotating filament.The movement pushes the cell forward and provides self-propulsion.
hairlike bristles that allow adhesion to the surfaces
Stored nutrients such as fat, phosphate or glycogen deposited in dense crystals or particles that can be tapped into when needed.
A rigid layer of nonliving material that surrounds the cells of plants and some other organisms
A thin sheet of lipid and protein that surrounds the cytoplasm and controls the flow of materials into and out of the cell pool.
extra membrane similar to cell membrane but also containing lipopolysacchride. Controls flow of materials and is toxic to animals when released
Dormant cell formed by certain bacteria that can survive very harsh conditions
Gel-like fluid inside the cell
External parts of a prokaryotic cell
Appendages (Flagella, pili, fimbriae) & Glycocalyx (capsule or slime layer)
Parts of a prokaryotic cell
Outer membrane, cell wall, cell membrane
Internal parts of a prokaryotic cell
Cytoplasm, ribosomes, inclusions, nucleoid/chromosomes, actin cytoskeleton, endospore.
2 types of prokaryotic cells
Bacteria & Archea
3 subtypes of polar arrangement
monotrichous, lophotrichous, amphitrichous
a tuft of flagella coming from one pole
flagella at both poles of the cell
Flagella are found around the entire surface of the cell
Two or more long, coiled threads that cause locomotion for spirochetes
A partial transfer of DNA from one cell to another
Polysaccharide that is embedded in the Gram positive cell wall
Bacteria that do not have a cell wall but have sterols in their cell membrane
Coating on the surface of bacterial cells. Capsule and slime layer are two examples.
Bacterial cell structure important in determining the shape of a cell and helps to prevent it from bursting
Resistant stage of some bacteria
An unusual type of prokaryotic cell which are more closely related to the eukaryotes
Bacterial cell group that has a thick layer of peptidoglycan and Teichoic and lipoteichoic acid
Group of bacteria that contains the lipid, my colic acid, in it's cell wall
Group of bacterial cells that have a pergolas mic space and lipopolysaccharides in its cell wall.
Bunch of flagegella emerging from one point on the bacterial cell
Term used for the group that includes the archea and the bacteria
Structure of streptococcus pneumoniae thatinhances it's ability to persist in the human body and cause disease
Component of bacterial cell wall that contributes to its rigidity
Class of molecules that is the main component of cell membranes
Stain that differentiates bacteria into two major groups
Structures that store extra nutrients the bacterium can use when nutrients in their environment become scarce
An internal flagellum found in the space between the cell wall and the cell membrane
Component of outer membrane of Gram negative bacteria which can stimulate fever and shock reactions
Movement of bacteria when they detect a chemical signal
Layers of living microbes found on many different types of surfaces
Movement of bacteria after they detect light
Small fibers which help bacteria stick to surfaces and each other
Term for the arches that have adapted to environments with extremes of heat, salt, acid, pH, pressure and atmosphere
Mating process that uses pili in transferring DNA between some tyoes of gram negative bacterial cells
Three letter symbol that refers to the protein and sugar material in gram negative bacteria which can result in fever and shock
Proteins that form channels in the outer membrane of gram negative bacteria.
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