Biol 203 Microbiology Final Exam Questions with Correct Answers Bactericidal - Correct Answers kills bacteria antibiotic resistance - Correct Answers Resistance evolving rapidly in many species of prokaryotes due to overuse of antibiotics, especially in agriculture.broad spectrum antibiotics - Correct Answers affect a broad range of gram-positive or gram-negative bacteria Narrow spectrum antibiotics - Correct Answers Effective against specific bacteria Sensitivity - Correct Answers Ability to recognize and appreciate the personal characteristics of others subunit vaccines - Correct Answers use antigenic fragments to stimulate an immune response monoclonal antibody - Correct Answers antibody produced in a laboratory to attack antigens and to destroy cells; useful in immunotherapy hybridoma - Correct Answers a cell hybrid produced in vitro by the fusion of a lymphocyte that produces antibodies and a myeloma tumor cell in order to produce a continuous supply of a specific antibody.ELISA - Correct Answers screening test to detect anti-HIV antibodies in the bloodstream bacteriostatic - Correct Answers inhibits bacterial growth antibiotic - Correct Answers a medicine used to save lives because it destroys harmful bacteria and cures infections selective toxicity - Correct Answers A drug that kills harmful microbes without damaging the host 1 / 2
adjuvant - Correct Answers drugs typically used for other purposes, but also used to enhance the effect of opioids by providing additional pain relief Penicillin was considered a "miracle drug" for what reasons? - Correct Answers Prevents the bacteria from synthesizing peptidoglycan, a molecule in the cell wall that provides the wall with the strength it needs to survive in the human body. The drug greatly weakens the cell wall and causes bacteria to die, allowing a person to recover from a bacterial infection.
Inventor: Alexander Fleming
Drug: Amoxicillin
-first antibiotic Commercially available antimicrobial agents (i.e., antibiotics) are effective against what? - Correct Answers bacterial infections or bacteria The antibiotic tetracycline binds to the 30S subunit of the ribosome and this does what? - Correct Answers inhibits bacterial protein synthesis by inhibiting the binding of aminoacyl-tRNA to the mRNA-ribosome complex.or prevent peptide bond formation The antibiotic cycloheximide binds to the 50S subunit of the ribosome and this does what? - Correct Answers prevent attachment of tRNA What does a zone of inhibition tell you about the effectiveness of an antibiotic? - Correct Answers If the observed zone of inhibition is greater than or equal to the size of the standard zone, the microorganism is considered to be sensitive to the antibiotic. Conversely, if the observed zone of inhibition is smaller than the standard size, the microorganism is considered to be resistant.Niclosamide prevents ATP generation in mitochondria. You would expect this drug to be effective against what? - Correct Answers helminths The antibiotic actinomycin D binds between adjacent G-C pairs, thus interfering with what? - Correct Answers transcription Rifamycin is an antibiotic that inhibits RNA synthesis which is what type or mode of action? - Correct Answers bactericidal action
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