Spring Multiple choice: Put the correct letter in the box to the left. I. Bacter

Question

Spring Multiple choice: Put the correct letter in the box to the left. I. Bacterium that can tolerate a high salt environment is a A. Acidophile D. B. Thermophile E. Mesophile C. Barophile is a narrow spectrum antibiotic drug class that inhibits bacterial metabolism by interfering with folic acid synthesis. A Tetracycline D. Quinolones B. Polymyxin E. Penicillin C. Sulfonamides The goal of antibiotic therapy i to administer a drug to a pati that destroys the infective agent and binds to the ent host's cells. B. False A/An infection takes place when the immune system or normal flora are compromised. D, localized B. opportunistic E. acute c systemic 5. Toxins from Campylobacter jejuani cause gastroenteritis D. pneumonia B. loss of ciliary action E- vomiting C. headache are proteinaceous hair like filaments used for adhesion. A- capsule D. fimbriae E. flagella C. glycocalyx 7. Appropriate therapy for toxin induced bacterial diarrhea is A. Imodium AD E. IV saline or hydration therapy s, where is the site of cellular respiration in a bacterium? A. Ribosome D. Chromatin B. Cell wall 9 The formation of biofilm is orchestrated by bacteria communicating with proteins. A. fimbriae D. glycocalyx E. slime layer C. quorum sensing

Explanation / Answer

1. D. Halophile

    The bacteria which thrive at high salt environment are termed as halophiles.

2. C. Sulfonamides

      Sulfa antibiotics inhibit synthesis of folic acid synthesis which is essential for bacterial growth.

3. A. True

         Antibiotics bind to cell specific receptors and regulate targeted cellular pathway to destroy the infective pathogen.

4. B. Opportunistic

        Opportunistic infections do not infect healthy host. They cause infection taking advantage of the compromised host immune system.

5. A. Gastroenteritis

         Toxins released by Campylobacter jejuni affect gastrointestinal tract.

6. D. Fimbriae

       Fimbriae are referred to as attachment pili. They contain adhesins which allow the bacteria to attach to the host tissue.

7. E. IV saline or hydration therapy

         In case bacterial toxin induced diarrhoea the toxin molecule alters the transport mechanism of plasma membranes and promotes loss of electrolyte homeostasis in the loss. Hence hydration therapy should be at high priority to restore the loss of electrolytes in the body followed by Pepto-Bismol and Imodium AD therapy.

8. C. Mitochondria

         Cellular respiration takes place in mitochondria.

9. C. Quorum sensing

         In quorum sensing bacteria uses cell signalling molecules which act as autoinducers and diffuse readily through the plasma membrane.

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