BIOCHEMISTRY, BIOMEDICINE & PHARMACEUTICS

                              MCQ on Respiratory Syncytial virus (RSV) 1. A 10-month-old male infant is presented to the emergency department with symptoms of fever, cough, runny nose, and difficulty breathing. The parents reported that the symptoms had been present for 3 days and had progressively worsened. The infant was born healthy and full-term with no underlying disease. Upon examination, the infant was breathing rapidly with increased respiratory effort. His temperature was 101.5°F (38.6°C), heart rate was 160 beats per minute. Lung examination revealed bilateral wheezing and crackles. A nasal swab was collected and sent for the laboratory diagnosis. The test results were positive for Respiratory Syncytial Virus (RSV). Which of the following is the typical mode of transmission for RSV to spread? a) Respiratory droplets from coughing or sneezing   b) Sexual contact with infected person c) Ingestio...

Multiple Choice Question on Mumps, Measles, and Rubella viruses. MMR vaccine 1) Paramyxoviruses consists all of the following properties, EXCEPT? a) Consists of a segmented genome b) Envelope contains glycoprotein which has fusion activity c) Have negative RNA genome d) Replicate in the cytoplasm 2)  Each of the following pathogens can cause respiratory infections in humans, EXCEPT ? a) Respiratory syncytial virus b) Parainfluenza virus c) Measles virus d) Rabies virus 3) Respiratory syncytial virus primarily infects the lower respiratory tract of the lungs, it can cause bronchiolitis, and pneumonia in children and elderly people.  Which of the following virus is not a common pathogen found in lower respiratory tract infections? a) Rhinovirus b) Metapneumovirus c) Influenza virus d) Respiratory syncytial virus 4) Which of the following is an example of the natural hosts of the Mumps virus? a) Pigs b) Bats c) Horses d) Humans 5) Meas...

                                                        Multiple Choice Questions on Parasite / Protozoa 1. Which of the following is an important and common specimen taken for the microscopic detection of malarial parasites in humans? a) Stool b) Sputum c) Blood      d) Urine 2. Which of the following parasite is transmitted to humans through exposure to cat feces? a) Trichomonas vaginalis b) Toxoplasma gondii          c) Entamoeaba histolytica d) Plasmodium falciparum 3. Which of the following parasite is a common cause of diarrhea in humans and some animals? a) Giardia lamblia      b)   Leishmania donovani c) Toxoplasma gondii d)  Pneumocystis carinii 4. Which of the following protozoan parasite can be spread to humans by the bite of a sandfly? a) Entamoeba histolytica b) Plasmo...

                                Sterilization, disinfection, and aseptic procedure 1) Identify all the commonly used physical methods for the sterilization process in healthcare facilities including microbiology laboratories, hospitals, and biotechnology industries a) Dry heat b) Ionizing gamma Radiation c) Moist heat (steam under pressure) d) Phenols e) Filtration 2) Autoclave is a widely used equipment for the sterilization process in microbiology laboratory, it is an example of moist heat method. Which of the following is the recommended heat temperature and time period for the moist heat sterilization process conducted in an autoclave? a) 180 degree C for 5 minutes b) 121 degree C for 15 minutes c) 126 degree C for 3 minutes      d) 160 degree C for 45 minutes 3) What is the correct statement for the term 'Bioburden' ? a) The number of microorganisms present on the surface b) The bacteria...

Key aspects of Bacterial pathogenesis/ General steps in bacterial pathogenesis Adherence and Colonization  Invasion Immune Evasion Toxin Production Nutrient Acquisition Host Cell Manipulation Inflammation and Tissue Damage                         Multiple Choice Questions on Bacterial Pathogenesis       Figure 1: Phagocyte activity and possible outcomes of phagocyte-bacterial interactions                                     (Source/Reference: Bailey & Scott’s Diagnostic  Microbiology) 1) Which of the following microorganism is the major inhabitant of the human skin? a) Escherichia coli b) Staphylococcus epidermidis c) Staphylococcus aureus d) Streptococcus pyogenes 2) Select all the medically important bacteria which are frequently isolated pathogen  human infections? a) Enteric ba...

                           Multiple Choice Question with answers on Chlamydia spp 1) Which of the following Chlamydia spp are human pathogens?  Select from all the options given below: a) Chlamydia pecorum b) Chlamydia psittaci c) Chlamydia trachomatis d) Chlamydia pnuemoniae 2) Which of the following is a common specimen used for the diagnosis of sexually transmitted chlamydial infections that occur in both men and women? a) Oral swab b) Cerebrospinal fluid c) Urine d) Skin biopsy 3) What type of methods are important laboratory approaches for the diagnosis of genital Chlamydia spp  infections?  Select all the correct answers: a) Specimen culture in McCoy cell tissue culture b) Direct fluorescent antibody and Enzyme-linked immunoassay c) Serological tests d) Nucleic acid amplification test 4) Chlamydia is one of the major pathogens that cause sexually transmitted diseases. What i...