Biology

Antibiotics and Immunity

974 Questions

Prepare for your science sections with these questions on antibiotics and immunity. The hub covers various classes of antibiotics, their sources, and mechanisms of microbial resistance. It also addresses the human antiviral response.

Antibiotic classes and sourcesMicrobial resistance mechanismsAntiviral proteinsDisease treatments

Antibiotics and Immunity Questions

Multiple choice

Which of the following are broad spectrum antibiotics?

  1. Tetracyclines

  2. Antihistamines

  3. Anti-fertility Drugs

  4. Antiseptic

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tetracyclines (Chloro and oxy) are broad spectrum antibiotics (antibiotics capable of curing many infections) and cure diseases caused by many bacteria, large viruses, protozoa, parasites and rickettsiae. These can be orally administered since they are absorbed from the gastro intestinal tract.

Multiple choice

Antibiotics attack the biochemical pathway of

  1. virus

  2. bacteria

  3. fungi

  4. All of the above

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, the antibiotic blocks the bacterial process that builds cell wall and blocks the biochemical pathways.

Multiple choice

What is the effect of antibiotics on common cold?

  1. They reduce the duration of illness.

  2. They reduce the severity of cold.

  3. They will immediately cure it.

  4. No effect will be seen.

  5. It depends upon the immunity of the person.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is the correct answer.

Multiple choice

Antimicrobial drugs are _________ drugs.

  1. bactericidal

  2. bacteriostatic

  3. either bactericidal or bacteriostatic

  4. antibody-producing

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Antimicrobial drugs are either bactericidal or bacteriostatic.

Multiple choice

Which of the following decribes the mode of action of Penicillin?

  1. To inhibit the cell wall synthesis

  2. To inhibit the protein synthesis

  3. To damage the plasma membrane

  4. To inhibit the nucleic acid synthesis

  5. To inhibit the synthesis of essential metabolites
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Penicillin prevents the synthesis of peptidoglycan, found in cell wall of bacteria and thereby, the cell wall greatly weakened and cell undergoes lysis.

Multiple choice

Which of the following options is not correct?

  1. Amoxicillin, ampicillin, penicillin - inhibitors of cell wall synthesis

  2. Streptomycin, gentamycin, neomycin - inhibitors of protein synthesis

  3. Polymyxin B - injury to the plasma membrane

  4. Acyclovir, ganciclovir, ribavirin - antifungal drugs

  5. Chloroquine, metronidazole - antiprotozoan drugs
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Acyclovir, ganciclovir and ribavirin are antiviral drugs.

Multiple choice

Which one of the following statements is not applicable to Rifamycin?

  1. It is derived from Amycolatopsis rifamycinica.

  2. It is a bactericidal antibiotic drug.

  3. It is used to treat tuberculosis.

  4. It specifically inhibits bacterial RNA-dependent DNA polymerase.

  5. It is a broad-spectrum antibiotic.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rifamycin inhibits bacterial DNA-dependent RNA synthesis by inhibiting bacterial DNA-dependent RNA polymerase.