Bacteria and Viruses Flashcards
Mycoplasma
no cell wall eg chlamydia
Mycobacterium
difficult to treat with antibiotics - thick mylonic acid on cell wall - eg TB
Gram positive
eg staplaccoccis - thick loosely packed peptoglycon cells wall - stain purple
Gram negative
layer of peptidoglycan on outer surface, thinner and dense packed - outside layer lipopolysaccharides - extra gap - important for antibiotic resistance - develop proton pumps and can shift antibiotics out
Acid fast
test for mycobacterial cells - do not respond to normal gram stain
sex pilli
Allows bacterial cells to share genetic material
pilli
Short, hair-like protein structures used to help bacteria adhere to host cells; also used to transfer genetic material from one bacterium to another
Flagella
Assists the bacterial cell with movement
bacteriophages
virus which infects bacterial cells - can give bacteria antibiotic-resistant.
virus capsid
Contains Genetic code such as RNA or DNA
Bacteriostatic
inhibits bacterial growth
Bactericidal
kills bacteria
Collagenase provides which one of the following survival advantages to a bacterial cell?
It dissolves collagen and allows an infection to spread along fascial planes
Streptokinase
It facilitates the movement of a bacterial cell within the body by dissolving fibrin.
