Introduction to Bacteria Flashcards
What does the membrane of gram-positive bacteria contain?
Plasma membrane
Periplasmic space
Peptidoglycan
What does the membrane of gram-negative bacteria contain?
Plasma membrane Periplasmic space Peptidoglycan Periplasmic space Outer membrane (liposaccharide and protein)
What colour do gram-postive/negative bacteria turn during gram staining?
Positive - Purple
Negative - Red
What shape are cocci bacteria?
Spherical
What shape are bacilli bacteria?
Rod
What 3 substances do penicillin binding proteins cross link with?
Transpeptidases
Carboxypeptidases
Endopeptidases
What is the function of the peptidoglycan?
Strength and shape.
What do capsules protect bacteria from?
Engulfment by macrophages.
What is the function of the flagellum?
Motility
What is the name of one singular flagellum?
Monotrichous Vibrio Cholerae
What is the name of multiple flagellum coming from the same site of the bacteria?
Lophotrichous Spirillum Spp.
What is the name of one flagellum coming out of either side of the bacteria?
Amphitrichous Rhodospirillum Rubrum
What is the name of multiple flagellum all over the bacteria?
Peritrichous.
What is the function of fimbriae?
Adherence.
How do bacteria replicate?
Binary fission.