Microbiology

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Q. Which of the following is NOT a symptom of foodborne illness?
  • A. Vomiting
  • B. Fever
  • C. Rash
  • D. Abdominal cramps
Q. Which of the following is NOT a terminal electron acceptor in anaerobic respiration?
  • A. Sulfate
  • B. Nitrate
  • C. Oxygen
  • D. Carbon dioxide
Q. Which of the following is NOT a type of toxin produced by Clostridium perfringens?
  • A. Alpha toxin
  • B. Beta toxin
  • C. Epsilon toxin
  • D. Gamma toxin
Q. Which of the following is required to initiate DNA replication?
  • A. RNA primer
  • B. DNA ligase
  • C. DNA helicase
  • D. DNA polymerase
Q. Which of the following protozoa is known to cause malaria?
  • A. Entamoeba histolytica
  • B. Plasmodium falciparum
  • C. Trypanosoma brucei
  • D. Toxoplasma gondii
Q. Which of the following statements about DNA replication is true?
  • A. It is a conservative process
  • B. It is a semi-conservative process
  • C. It is a dispersive process
  • D. It occurs only in prokaryotes
Q. Which of the following statements about enzyme inhibitors is true?
  • A. They always permanently inactivate enzymes.
  • B. They can be reversible or irreversible.
  • C. They only affect allosteric enzymes.
  • D. They increase the rate of reaction.
Q. Which of the following treatments is commonly used for HIV infection?
  • A. Antibiotics
  • B. Antiretroviral therapy
  • C. Vaccines
  • D. Corticosteroids
Q. Which of the following viruses is known for causing severe acute respiratory syndrome (SARS)?
  • A. Influenza virus
  • B. SARS-CoV
  • C. MERS-CoV
  • D. Hantavirus
Q. Which of the following viruses is known for causing severe respiratory illness?
  • A. Ebola virus
  • B. SARS-CoV-2
  • C. Zika virus
  • D. Herpes simplex virus
Q. Which of the following viruses is known to cause severe acute respiratory syndrome (SARS)?
  • A. HIV
  • B. SARS-CoV
  • C. Influenza virus
  • D. Ebola virus
Q. Which of the following viruses is known to cause the common cold?
  • A. HIV
  • B. Rhinovirus
  • C. Hepatitis B
  • D. Ebola
Q. Which organelle is primarily responsible for ATP production?
  • A. Nucleus
  • B. Ribosome
  • C. Mitochondrion
  • D. Endoplasmic reticulum
Q. Which phase of the cell cycle does DNA replication occur?
  • A. G1 phase
  • B. S phase
  • C. G2 phase
  • D. M phase
Q. Which physical agent is used in radiation therapy to target cancer cells?
  • A. Ultrasound
  • B. X-rays
  • C. Microwaves
  • D. Infrared radiation
Q. Which population is at highest risk for severe disease caused by Streptococcus pneumoniae?
  • A. Healthy adults
  • B. Children under 5
  • C. Elderly individuals
  • D. Pregnant women
Q. Which process converts glucose into ATP in the presence of oxygen?
  • A. Fermentation
  • B. Glycolysis
  • C. Aerobic respiration
  • D. Anaerobic respiration
Q. Which process do microbes use to produce vinegar?
  • A. Anaerobic respiration
  • B. Aerobic respiration
  • C. Fermentation
  • D. Photosynthesis
Q. Which process involves the transfer of genetic material between bacteria through direct contact?
  • A. Transformation
  • B. Transduction
  • C. Conjugation
  • D. Replication
Q. Which process involves the uptake of naked DNA by a bacterial cell?
  • A. Transduction
  • B. Conjugation
  • C. Transformation
  • D. Binary fission
Q. Which process is primarily carried out by soil microorganisms?
  • A. Photosynthesis
  • B. Nitrification
  • C. Transpiration
  • D. Evaporation
Q. Which process is primarily used to remove suspended solids from wastewater?
  • A. Sedimentation
  • B. Filtration
  • C. Chlorination
  • D. Aeration
Q. Which process occurs first during the initiation of translation?
  • A. Binding of the ribosome to mRNA
  • B. tRNA binding to the start codon
  • C. Formation of the peptide bond
  • D. Release of the completed polypeptide
Q. Which process occurs in the absence of oxygen and produces lactic acid?
  • A. Aerobic respiration
  • B. Glycolysis
  • C. Lactic acid fermentation
  • D. Krebs cycle
Q. Which protozoan is commonly associated with sleeping sickness?
  • A. Giardia lamblia
  • B. Plasmodium vivax
  • C. Trypanosoma brucei
  • D. Leishmania donovani
Q. Which protozoan is known to cause severe dehydration in children due to diarrhea?
  • A. Cryptosporidium parvum
  • B. Entamoeba histolytica
  • C. Giardia lamblia
  • D. Balantidium coli
Q. Which RNA molecule carries the genetic information from DNA to the ribosome?
  • A. tRNA
  • B. rRNA
  • C. mRNA
  • D. snRNA
Q. Which seafood is considered a good source of protein and low in calories?
  • A. Shrimp
  • B. Crab
  • C. Lobster
  • D. All of the above
Q. Which seafood is known for its high levels of astaxanthin, a powerful antioxidant?
  • A. Salmon
  • B. Tuna
  • C. Tilapia
  • D. Cod
Q. Which sequencing method uses fluorescently labeled nucleotides?
  • A. Sanger sequencing
  • B. Next-generation sequencing
  • C. Pyrosequencing
  • D. Capillary electrophoresis
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