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Questions and Answers
What defines an antibiotic in modern terminology?
What defines an antibiotic in modern terminology?
- A substance produced by microorganisms or chemically synthesized that inhibits the growth of other microorganisms. (correct)
- A disinfectant that can be safely used in systemic infections.
- A substance produced by mammals that kills bacteria.
- Any substance that can inhibit the growth of all microorganisms.
What is the primary difference between bactericidal and bacteriostatic antibiotics?
What is the primary difference between bactericidal and bacteriostatic antibiotics?
- Bactericidal antibiotics inhibit growth while bacteriostatic antibiotics kill bacteria.
- Bactericidal antibiotics are broad spectrum while bacteriostatic antibiotics are narrow spectrum.
- There is no difference; both terms can be used interchangeably.
- Bactericidal antibiotics kill bacteria, while bacteriostatic antibiotics inhibit their growth. (correct)
Which of the following statements about antibiotics is true?
Which of the following statements about antibiotics is true?
- Antibiotics can be used safely at any concentration without risk to human cells.
- All antibiotics are equally toxic to mammalian cells as they are to microorganisms.
- The only use of antibiotics is to disinfect surfaces before surgical procedures.
- Most antibiotics have a high therapeutic index and selectively target microbial cells. (correct)
Which method is NOT one of the primary ways antibiotics exert their effects?
Which method is NOT one of the primary ways antibiotics exert their effects?
How are antibiotics classified according to their spectrum of activity?
How are antibiotics classified according to their spectrum of activity?
Which of the following is a characteristic of synthetic anti-infective agents?
Which of the following is a characteristic of synthetic anti-infective agents?
What is a potential disadvantage of disinfectants compared to antibiotics?
What is a potential disadvantage of disinfectants compared to antibiotics?
Which action is generally associated with antibiotics that belong to groups 1 and 3?
Which action is generally associated with antibiotics that belong to groups 1 and 3?
Which antibiotic inhibits protein chain initiation by blocking the attachment of the 50S subunit?
Which antibiotic inhibits protein chain initiation by blocking the attachment of the 50S subunit?
What is the primary mechanism of action for aminoglycosides?
What is the primary mechanism of action for aminoglycosides?
Which antibiotics are known to prevent the elongation of the growing peptide chain?
Which antibiotics are known to prevent the elongation of the growing peptide chain?
What do tetracyclines primarily do during protein synthesis?
What do tetracyclines primarily do during protein synthesis?
Which of the following is NOT an effect of chloramphenicol?
Which of the following is NOT an effect of chloramphenicol?
Which suffix is used for aminoglycosides derived from Streptomyces?
Which suffix is used for aminoglycosides derived from Streptomyces?
Which class of antibiotics can cause misreading of messenger RNA messages?
Which class of antibiotics can cause misreading of messenger RNA messages?
What is the primary action of beta-lactamase inhibitors?
What is the primary action of beta-lactamase inhibitors?
What is a feature of tetracyclines during the translation process?
What is a feature of tetracyclines during the translation process?
Which of the following inhibitors is isolated from Streptomyces clavuligerus?
Which of the following inhibitors is isolated from Streptomyces clavuligerus?
Beta-lactamase inhibitors are particularly ineffective against which type of enzyme?
Beta-lactamase inhibitors are particularly ineffective against which type of enzyme?
What is the primary mechanism of action of Isoniazid?
What is the primary mechanism of action of Isoniazid?
What type of antibiotic is Caspofungin classified as?
What type of antibiotic is Caspofungin classified as?
Which antibiotics are specifically mentioned as being used in combination with clavulanic acid?
Which antibiotics are specifically mentioned as being used in combination with clavulanic acid?
What characteristic of bacterial ribosomes differentiates them from mammalian ribosomes?
What characteristic of bacterial ribosomes differentiates them from mammalian ribosomes?
Which enzyme is primarily inhibited by ethambutol?
Which enzyme is primarily inhibited by ethambutol?
What is the primary use of doxycycline as mentioned in the content?
What is the primary use of doxycycline as mentioned in the content?
Which of the following tetracyclines is classified as a long-acting type?
Which of the following tetracyclines is classified as a long-acting type?
What is tigecycline primarily used to treat?
What is tigecycline primarily used to treat?
Which of the following infections is doxycycline NOT considered the drug of choice for?
Which of the following infections is doxycycline NOT considered the drug of choice for?
What mechanism do glycylcyclines target to remain effective against certain bacteria?
What mechanism do glycylcyclines target to remain effective against certain bacteria?
What is the primary mechanism of action of tetracyclines?
What is the primary mechanism of action of tetracyclines?
Which type of bacteria are tetracyclines generally effective against?
Which type of bacteria are tetracyclines generally effective against?
Why should tetracyclines not be used in combination with β-lactams?
Why should tetracyclines not be used in combination with β-lactams?
What characteristic do kanamycin and neomycin share?
What characteristic do kanamycin and neomycin share?
Which property is true of tetracycline's entry into prokaryotic cells?
Which property is true of tetracycline's entry into prokaryotic cells?
Which of the following therapeutic uses is NOT commonly associated with tetracyclines?
Which of the following therapeutic uses is NOT commonly associated with tetracyclines?
Which statement about spectinomycin is accurate?
Which statement about spectinomycin is accurate?
Which antibiotic is considered a second-line treatment for tuberculosis?
Which antibiotic is considered a second-line treatment for tuberculosis?
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