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Questions and Answers
Which tumor does not have a mutated RB gene?
What are the important defense factors against resistant N. Gonorrhea dissemination infection?
Which term refers to a benign brain covering tumor?
What is not an important characteristic of Neisseria gonorrhea or Neisseria meningitidis?
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Which Streptococcal disease pathogenesis does not involve an exotoxin?
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Regarding immunity, which cells are involved in humoral immunity?
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What is the likely cause of the patient's illness based on the laboratory report provided?
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Which selective media is used for the growth of E. Coli?
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For what purpose is the Schick test performed?
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Which neoplasm has been linked to a deletion of a tumor suppressor gene?
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What is the primary focus of infection for systemic mycosis?
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Which bacterial structure helps in serodiagnosis?
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What causes toxic shock syndrome?
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Which bacterium is novobiocin-sensitive among the following Staphylococci?
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What family does Hepatitis B virus belong to?
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Why is Mycobacterium tuberculosis considered an obligate intracellular organism?
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Which of the following cells can present antigens to helper T-Cells?
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What is likely responsible for the hemolysis in infections caused by Clostridium Perfringens?
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Which exotoxin of Staphylococcus aureus kills white blood cells by forming pores in their cell wall?
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Which characteristic is NOT important for either Neisseria gonorrhea or Neisseria meningitidis?
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Q fever occurs due to the infection of which organism?
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Regarding the laboratory diagnosis of Chlamydia infections, what is true?
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What is the most definitive feature of malignancy when distinguishing between a benign and malignant tumor?
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In which organ can Mycobacterium leprae be grown?
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Which organism is commonly associated with endocervical infection?
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Which animal is commonly associated with Mycobacterium leprae?
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What is the likely cause of hepatitis in a woman who developed it two months after receiving 10 units of blood and tested negative for HCV and HBV antigens pre-transfusion?
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What are the calcifications called in a tumor composed of papillary processes and multiple areas of lamellated calcification found in the thyroid of a 35-year-old lady?
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Study Notes
Bacterial Infections
- Scarlet fever is caused by an exotoxin produced by Streptococcus pyogenes.
- Toxic shock syndrome is caused by an exotoxin produced by Staphylococcus aureus.
- Impetigo is a skin infection caused by Staphylococcus aureus or Streptococcus pyogenes.
- Scalded skin syndrome is a skin infection caused by an exotoxin produced by Staphylococcus aureus.
- Food poisoning is caused by an exotoxin produced by Clostridium perfringens.
Antigen Presentation
- B cells and dendritic cells can present antigens to helper T cells.
- Macrophages and mast cells can also present antigens to helper T cells.
Exotoxins
- Lecithinase is an exotoxin produced by Clostridium perfringens.
- Streptolysin O is an exotoxin produced by Streptococcus pyogenes.
- Panton-Valentine leukocidin is an exotoxin produced by Staphylococcus aureus.
- Tetanospasmin is an exotoxin produced by Clostridium tetani.
- Protein A is a cell wall component of Staphylococcus aureus.
Bacterial Characteristics
- Neisseria gonorrhea and Neisseria meningitidis have a polysaccharide capsule.
- Neisseria gonorrhea and Neisseria meningitidis are oxidase-positive.
- Neisseria gonorrhea and Neisseria meningitidis have pili.
- Neisseria gonorrhea and Neisseria meningitidis have IgA protease.
Infectious Diseases
- Q fever is caused by Coxiella burnetii.
- Chlamydia is diagnosed by special culture media or by serological testing.
- Infant botulism is associated with ingestion of honey or corn syrup.
Tumors
- Benign fibrous tumor is a type of tumor.
- Lymphangioma is a type of tumor.
- Meningioma is a type of tumor.
- Osteosarcoma is a type of tumor that is not associated with a mutation in the RB gene.
- Retinoblastoma is a type of tumor that is associated with a mutation in the RB gene.
Immunity
- T cells are involved in humoral immunity.
- B cells are involved in humoral immunity.
- T cells are involved in cell-mediated immunity.
- B cells are involved in antibody-mediated immunity.
Microbiology
- Aspergillosis is recognized in tissue by the presence of septate hyphae.
- V. cholerae grows well on TCBS agar.
- Metachromatic granules are found in Neisseria gonorrhea.
- Pseudohypae are found in Candida albicans.
- Budding cells are found in yeast.
Vaccination
- Effective vaccines are available against Staphylococcus aureus, Streptococcus pyogenes, and Pneumococcus.
Bacterial Structure
- Flagella are a structure found in bacteria.
- Cell wall is a structure found in bacteria.
- Plasmamembrane is a structure found in bacteria.
- Spores are a structure found in bacteria.
- Mesosome is a structure found in bacteria.
Serological Diagnosis
- Bacterial structures that help in serological diagnosis are flagella, cell wall, and plasmamembrane.
Disease Pathogenesis
- Pathogenicity of tetanus disease is due to tetanospasmin.
- Pathogenicity of botulism is due to botulinum toxin.
- Pathogenicity of scarlet fever is due to an exotoxin produced by Streptococcus pyogenes.
- Pathogenicity of toxic shock syndrome is due to an exotoxin produced by Staphylococcus aureus.
Viral Infections
- Hepatitis B virus belongs to the Hepadnaviridae family.
- Cytomegalovirus is a common cause of infection in immunocompromised individuals.
- Infectious mononucleosis is caused by Epstein-Barr virus.
Tumor Characteristics
- Anaplasia is a characteristic of malignant tumors.
- Pleomorphism is a characteristic of malignant tumors.
- Hyperchromasia is a characteristic of malignant tumors.
- Tumor giant cells are a characteristic of malignant tumors.
- Metastasis is a characteristic of malignant tumors.
Thyroid Tumors
- Psammoma bodies are found in papillary thyroid carcinoma.
Malignant Tumors
- Sarcoma is a type of malignant tumor of mesenchymal origin.
- Carcinoma is a type of malignant tumor of epithelial origin.
- Medulloblastoma is a type of malignant tumor of the brain.
Bone Tumors
- Osteosarcoma is a type of malignant tumor of the bone.
- Chondrosarcoma is a type of malignant tumor of the bone.
Gastrointestinal Tumors
- Hepatocellular carcinoma is a type of malignant tumor of the liver.
- Glioblastoma multiforme is a type of malignant tumor of the brain.
Systemic Mycosis
- The primary focus of infection for systemic mycosis is the lung.
Breast Cancer
- Amplification of ERBB2 in breast cancer leads to overexpression of HER2 receptor.
Genetic Inheritance
- Sex-linked dominant inheritance is a type of genetic inheritance.
- Sex-linked recessive inheritance is a type of genetic inheritance.
- Autosomal dominant inheritance is a type of genetic inheritance.
- Autosomal recessive inheritance is a type of genetic inheritance.
- Mitochondrial inheritance is a type of genetic inheritance.
Teratoma
- Immature teratoma is a type of tumor that is derived from more than one germ layer.
Defective RNA Virus
- One example of a defective RNA virus is a virus that requires a helper virus to replicate.
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Description
Test your knowledge on bacterial growth media, characteristics, and diseases in this microbiology quiz. Questions cover topics such as agar types, cell structures, and genetic disorders. Challenge yourself with multiple-choice questions.
