10 Batch

Test Your Self In : Microbiology

An infection with no detectable symptoms is called:
  1. Fulminant
  2. Latent
  3. Subclinical
  4. Secondary
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Antibiotic that in need for oxygen- dependent system to transports the antibiotic across the cell membrane.
  1. Tetracyclines
  2. Lincosamides
  3. Macrolides
  4. Aminoglycosides
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Antibiotic that inhibits the enzyme dihydrofolate reductase is:
  1. Ciprofloxacin
  2. Trimethoprim
  3. Nalidixic acid
  4. Sulfamethoxazole
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Characteristic of Gram-negative bacteria is the presence of:
  1. Al of them
  2. Thin Peptidoglycan
  3. Outer membrane
  4. Lipopolysaccharide
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Characteristic of Gram-positive bacteria is the presence of:
  1. Plasma membranes
  2. Lipopolysaccharide
  3. Peptidoglycan
  4. Teichoic acid
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Cilastatin is prescribed in combination with
  1. Ertapenem
  2. Imipenem
  3. All carbapenems
  4. Meropenem
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Cyclic lipopeptide that disrupts the cell membranes of gram-positive cocci:
  1. Daptomycin
  2. Polymyxin E
  3. Colistin
  4. Polymyxin B
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Cystitis in women is frequently caused by:
  1. Staphylococcus epidermidis
  2. Staphylococcus aureus
  3. All of them
  4. Staphylococcus saprophyticus
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Natural resistance to novobiocin is characteristic of:
  1. Staphylococcus aureus
  2. All of them
  3. Staphylococcus epidermidis
  4. Staphylococcus saprophyticus
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Number of Shigella required to cause diarrhea is
  1. Less than 100
  2. More than 100000
  3. Approximately 10000
  4. About 1000
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One of the following is not Penicillins
  1. Dicloxacillin
  2. Piperacillin
  3. Nafcillin
  4. Cefepime
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One of the following is not true with Pili:
  1. Shorter than flagella
  2. Involved in motility
  3. Shorter than fimbriae
  4. Involved in DNA transfer
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one of the following is not true with Vancomycin
  1. Adverse effect of it Is red man syndrome
  2. it is bacteriostatic drug
  3. it is narrow-spectrum antibiotics
  4. binds directly to the d-alanyl-d-alanine
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Scalded skin syndrome resulting from the action of:
  1. Protein A
  2. Cytolytic exotoxins
  3. Exfoliative toxin
  4. Panton-Valentine leukocidin
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The causative of pseudomembranous colitis is:
  1. Clostridium perfringens
  2. Clostridium difficile
  3. Clostridium botulinum
  4. Clostridium tetani
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The colon is the site of the largest number of normal flora bacteria. Which one of the following bacteria is found in the greatest number in the colon?
  1. Clostridium perfringens
  2. Escherichia coli
  3. Enterococcus faecalis
  4. Bacteroides fragilis
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The cytoplasmic bridge is characteristic of
  1. Conjugation
  2. Transduction
  3. Transformation
  4. All of them
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The essential genes of the bacterium generally carried on
  1. Transposons
  2. Chromosome
  3. All of them
  4. P l a s m i d
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The infection with Treponema pallidum (syphilis) is
  1. L a t e n t
  2. Secondary
  3. Primary
  4. All of them
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The iron-binding protein in liver is
  1. Transferrin
  2. Lactoferrin
  3. Ferritin
  4. Hemoglobin
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The phase of bacterial growth when the number of cells increases is:
  1. log phase
  2. stationary phase
  3. lag phase
  4. Death phase
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The predominant bacterial species that colonizes the human skin is:
  1. Streptococcus pneumoniae
  2. Staphylococcus epidermidis
  3. Lactobacillus
  4. Candida albicans
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The pus of pyogenic inflammations contains mostly
  1. Fibroblasts
  2. Neutrophils
  3. Lymphocytes
  4. Macrophages
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Toxic shock syndrome toxin is Staphylococcal enterotoxin:
  1. D
  2. F
  3. G
  4. E
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Transfer of genes from one cell to another via a phage vector is called
  1. Transduction
  2. Transformation
  3. Conjugation
  4. Transposition
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When a single bacterial cell inoculated in solid media and the generation time of growth si 0.5 hr., the number of bacteria ni the colony after 8hr. is:
  1. 65000
  2. 256
  3. ‭17000000‬
  4. 1
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When Pseudomonas and Bacillus, can use a nitrate ion (NO3-) as a final electron acceptor the process of energy production is known as:
  1. Aerobic respiration
  2. Fermentation
  3. None of them
  4. Anaerobic respiration
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Which of the followings is normal flora:
  1. Fungi
  2. Viruses
  3. Helminthes
  4. Protozoa
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