Bacterial Structure Flashcards
Two structures not found in prokaryotic cells
Golgi body
Endoplasmic reticulum
T/F
Prokaryotes have a nucleus
False
(they have a nucleoid region)
Eukaryotic cells _ _ times bigger than prokaryotic cells
Ten!
T/F
Protozoa is an example of a prokaryote
False
Eukaryote dummy!
T/F
The DNA of a prokaryotic cells is surrounded by an envelope
False
Most bacteria range from _ _ um in diameter and from _ _ um in length
0.2 to 2 um in diameter
2 to 8 um in length
Name when two cocci are attached
Name for a chain of cocci
Name for grapelike clusters of cocci
Diplococci
Streptococci
Staphylococci
T/F
Most bacilli appear in chains
False
Most bacilli appear as single rods
Sizes
Coccus
Bacillus
Spirochaete
Coccus - 1 um
Bacillus - 5 um
Spirochaete - 10 um
This structure is external to the cell wall of prokaryotes and serves protective, adhesive and receptor functions
Glycocaylx
This structure is external to the cell wall of prokaryotes and assist in motility
Flagella
This structure is external to the cell wall of prokaryotes and help with attachment to the host cell
Fimbriae (pili)
T/F
Fimbriae/pili assist with motility
False
Prokaryote with a single flagella
Prokaryote with one flagella on each end
Prokaryote with multiple flagella on one end
Prokaryote with flagella everywhere
Monotrichous
Amphitrichous
Lophotrichous
Peritrichous
Gram _ _ have a thin peptidoglycan layer
Gram _ _ have an outer membrane
Gram _ _ do NOT have endotoxins
Gram negative
Gram negative
Gram positive
Put these in the correct order for Gram staining
Safranin - Iodine - Alcohol - Crystal Violet
Crystal Violet > Iodine > Alcohol > Safranin
Flagella are composed of _ _
Flagella are called _ _ antigens
glycoproteins
H antigens
These feature of bacteria can disrupt phagocytosis, prevent desiccation, resist lysis by complement, and inhibit lysis within phagolysosomes
Capsule
Resting stage of bacteria that enables the organism to endure adverse conditions
Spore
3 spores that cause diseases and withstand extremely harsh conditions
Anthrax
Botulism
Tetanus
T/F
All bacteria can form spores
False
Sterilization can kill all of the following except:
Bacteria
Spores
Prions
Viruses
Prions
Dry heat sterilization
Time -
Temperature -
320F for 2 hours
340F for 1 hour
Electromagnetic radiation of high frequency used for sterlization of disposable plastic lab and surgical equipment
Gamma radiation
(unsuitable for glass and metal)
Electromagnetic radiation with a wavelength shorter than visible light used in biosafety cabinets
Ultraviolet light
Used for filtering out bacteria from heat sensitive fluids such as serum, tissue culture media
Membrane filtration
