6. WHAT protein of Group A Streptococcus:
Present as fine processes called fimbriae
Protects from phagocytosis
M
A
7. A coiled portion of the membrane is called what
cytoplasm
the mesosome
mitocondria
8. WHAT are bound to membrane lipids of Gram-positives:
Called lipoteichoic acids
Glycerol containing acids
Glucose containing acids
Glucagon containing acids
9. peptidoglycan has Cross linking of WHAT with a tetrapeptide
NAM
NAG
10. WHAT Act as transport proteins for larger metabolites including:
Maltose
Oligosaccharides
Vitamin B12
Nucleosides, and are less sensitive to antibiotics
Membrane pores
outer membrane
11. PEPTIDOGLYCAN IS Brought to the surface by a large phospholipid called WHAT and attached to the existing structure
bactoprenol
bacterialpropanol
12. WHAT is Unique to Gram-negative prokaryotes
Outer membrane
Inner cortex
13. Glycan chains connected by peptide cross links of HOW MANY amino acids to give rigidity
2
4
3
1
14. WHAT PROTEIN of S. aureus:
Binds Fc region of IgG
Competes with neutrophil receptors for the Fc region of opsonising antibodies
A
M
15. what acidic polysaccharide is also present in the wall of peptidoglycan (PG)
Teichoic acid
lipoteichpic acid
16. Acid-fast bacteria Mycobacterium:
Have a peptidoglycan layer attached to WHAT polymer
arabinogalactan
wax D
mycolic acid
cord factor
17. WHAT Is responsible for the endotoxic activity, Very toxic to host
Released in large quantities when cells die
Consists of 6 fatty acid chains and 2 glucosamine residues
O antigen:
lipid A
Core polysaccharide:
18. outer membrane and LPS is a Powerful stimulator of the immune response – select INCORRECT statement
Stimulated to release IL1 and 6, tumour necrosis factor
Proliferate mast cells
Macrophages
Activates B cells
19. WHAT may be attached to the hydroxyls of the ribose or glycerol:
SELECT WRONG ANSWER
D-alanine
lipoproteins
choline
Sugars
20. Peptidoglycan Forms mesh like WHAT but is porous enough to allow diffusion of metabolites
