Which of the following differentiates a bacteriostatic drug from a bactericidal drug?
Bacteriostatics are narrow spectrum drugs and bactericidal drugs are broad spectrum
Bacteriostatic drugs inhibit bacterial growth, and bactericidal drugs actually kill bacteria
Bacteriostatics work by inhibiting protein synthesis and bactericidal drugs work by inhibiting nucleic acid synthesis
Bacteriostatic drugs actually kill bacteria and bactericidal drugs inhibit bacterial growth
The Correct Answer is B
A. Bacteriostatics are narrow spectrum drugs, and bactericidal drugs are broad spectrum:
This statement is incorrect. The spectrum of activity (narrow vs. broad) of an antibiotic refers to the range of bacterial species that it can target, not whether it is bacteriostatic or bactericidal.
B. Bacteriostatic drugs inhibit bacterial growth, and bactericidal drugs actually kill bacteria:
This statement is correct. Bacteriostatic drugs work by inhibiting the growth and reproduction of bacteria without directly killing them, whereas bactericidal drugs directly kill bacteria.
C. Bacteriostatics work by inhibiting protein synthesis, and bactericidal drugs work by inhibiting nucleic acid synthesis:
This statement is incorrect. Both bacteriostatic and bactericidal drugs can target various bacterial cellular processes, including protein synthesis, nucleic acid synthesis, cell wall synthesis, and others. The mechanism of action is not a definitive factor in distinguishing between bacteriostatic and bactericidal drugs.
D. Bacteriostatic drugs actually kill bacteria, and bactericidal drugs inhibit bacterial growth:
This statement is incorrect. It contradicts the established definitions of bacteriostatic and bactericidal drugs. Bacteriostatic drugs inhibit bacterial growth without killing the bacteria, while bactericidal drugs directly kill bacteria.
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Related Questions
Correct Answer is D
Explanation
A.Goldenseal:
Goldenseal is a plant commonly used in herbal medicine, but it is not a drug that specifically inhibits bacterial beta-lactamase. While goldenseal may have antimicrobial properties, it is not typically used as a beta-lactamase inhibitor in the treatment of bacterial infections.
B. Ceftriaxone (Rocephin):
Ceftriaxone is a third-generation cephalosporin antibiotic. While it is an effective antibiotic for treating a wide range of bacterial infections, it does not have beta-lactamase inhibitor properties. Instead, ceftriaxone is susceptible to degradation by beta-lactamase enzymes produced by certain bacteria.
C. Penicillin:
Penicillin is one of the earliest discovered and most widely used beta-lactam antibiotics. However, many bacteria have developed resistance to penicillin by producing beta-lactamase enzymes. Penicillin itself does not inhibit beta-lactamase; instead, it is often combined with beta-lactamase inhibitors to enhance its effectiveness against beta-lactamase-producing bacteria.
D. Zosyn (piperacillin/tazobactam):
Zosyn is a combination antibiotic containing piperacillin, a broad-spectrum penicillin antibiotic, and tazobactam, a beta-lactamase inhibitor. Tazobactam inhibits the action of beta-lactamase enzymes produced by bacteria, allowing piperacillin to exert its antibacterial effects without being degraded by beta-lactamase. Therefore, Zosyn is the correct answer as it contains a drug that inhibits bacterial beta-lactamase.
Correct Answer is C
Explanation
A. Take small amounts of food:
This advice suggests eating small, frequent meals when experiencing diarrhea. It aims to reduce the workload on the digestive system and may help alleviate symptoms such as nausea and discomfort. However, while eating small amounts of food can be beneficial, increasing fluid intake is the priority to prevent dehydration associated with diarrhea.
B. Consume large quantities of milk and smoked meat:
Consuming large quantities of milk and smoked meat is not recommended when experiencing diarrhea. Dairy products, including milk, can worsen diarrhea in some individuals, especially those who are lactose intolerant. Similarly, smoked meat may be high in fat and difficult to digest, potentially aggravating gastrointestinal symptoms. Therefore, this advice is not appropriate for managing diarrhea.
C. Increase fluid intake:
Increasing fluid intake is essential when experiencing diarrhea to prevent dehydration. Diarrhea leads to the loss of fluids and electrolytes from the body, which can quickly lead to dehydration if not replenished. Encouraging the patient to drink water, clear broths, oral rehydration solutions, and other electrolyte-rich fluids helps replace lost fluids and maintain hydration levels, making this the correct choice.
D. Take a mild medication to treat the diarrhea along with the ciprofloxacin:
While it may be tempting to take a medication to alleviate diarrhea symptoms, it's crucial to consult a healthcare provider before taking any additional medications, especially when already taking antibiotics like ciprofloxacin. Some anti-diarrheal medications can interfere with the effectiveness of antibiotics or worsen gastrointestinal symptoms. Therefore, it's important to seek medical advice before taking any additional medications.
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