37 Adhesins are A. endotoxins B imolved in the first sep of the infectious proce

Question

37 Adhesins are A. endotoxins B imolved in the first sep of the infectious process ctious process AND often found at the tip of pili C offen found at the tip of pi. D. involved in the first step of the info E. found on flagella 38 Home-cannod foods should be boiled before consumption to prevent botulism. Considering thar this treatment does NOT destroy endospores, why would it be helpful in preventing the B. Recause il would at least weaken the endospores, making them more suseeptible to elimination C. Because the heat A. Because it would destroy the vegetative cells, and only the vegetative cells cause the discase. would denature the botulism exotoxin and inactivate it. The exotoxin is what symptoms, so this would make the food safer. by our inimune systcm leads to the disease 39. Superantigens A. are exceptionally large antigen molecules B. cause a very large antibody response. C. elicit a response from a large number of T cells D attach non-specifically to B-cell receptors. E. assist in a protective immune response Vaccination Ch.18.1, 18.2 40. Almost all of the antibodies found in a newborm are G A. the result of infection.3 B. self-made.D D the result of passive immunity antibodies cross the placenta and protect the fetus? ?.lpAD B. IgGO C. lgMo D. IgD E. IgH 42. Attenuated agents are A. dead viruses. B. toxins. 0 C. weakened but replicating microbes. D. parts of an organism. 43. What would be a primary advantage of using an attenuated agent rather than just an antigen from that agent for a vaccine? A. This is actually a disadvantage-it's much more dangerous to use an attenuated agent over a subunit (single antigen) vaccine due to the possibility of reversion of the microbe to a pathogenic state B. An attenuated agent strongly stimulates ONLY the antibody production (humoral response) of the adaptive immune system. This provides the best and strongest C. An attenuated agent strongly stimulates ONLY the cytotoxic T cell (T

Explanation / Answer

37. D

Adhesins are cell-surface components that helps bacterial attachment to host cell.

38. C

The boiling temperature is not sufficient to destroy the botulism spores but it is sufficient to kill the toxin which they produce.

39. C

They are related to nonspecific activation of T cells resulting heavy cytokine release and T cell activation.

40. D

The antibodies in the new born are acquired from mother.

41. B

The only antibody IgG can cross placenta and protect foetus.

42. C

Attenuation removes the harmful or disease causing element and makes an organism less virulent.

43. No option

An attenuated agent provides long term protection. It stimulates both humoral as well as cell mediated immunity.

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