b- Septicemia c- Viremia d- Toxemia 6- True or false Adhesion proteins found on
ID: 258503 • Letter: B
Question
b- Septicemia c- Viremia d- Toxemia 6- True or false Adhesion proteins found on the tip of the pili are responsible for attachment of pathogen to host. 7- Shigella can penetrate the mucous membrane by a- Directed uptake by cells b- Exploitation of antigen sampling processes c Type 3 secretion system d- None of the above 8- True or False IgA protease is an enzyme used by organisms to break down IgA and help escape the host Immune system 9- True or False Opportunistic infections are least likely to affect AIDS patients 10- True or False In the A-B Toxin, the B subunit is the actual toxin that binds to the receptor which is the A subunit. 11-All the following are true of A- B toxins, except a) The portion A is an enzyme b) The B portion is responsible for the toxic properties c) They are exotoxins d) The B portion binds to host cells and allows the toxin to enter the cell a) Endotoxins that link MRC class II protein to the plasma membrane b) Endotoxins that attach to the outside of MHC class II proteins c) Exotoxins that attach to the outside of MHC class II proteins d) NONE of the above 12-Superantigens are 13-Successful pathogens have the ability to carry out a number of steps essential for thein virulence and their survival, these include:Explanation / Answer
6. False.
Pili does not help in attachment but help in conjugation and gene transfer. Fimbrae carat adhesion proteins and help in attachment.
7. C. Type 3 secretion system.
8. True.
9. False.
AIDS is the disorder in humans in which progressive failure of immune system leads to life threateni g opputunistic infections and cancers to thrive.
10. False.
B is the membrane bound transport protein and A is the active protein.
11.
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