MDCAT Biology Quiz 01 – ACELLULAR LIFE Leave a Comment / By studentseoasis.org / July 24, 2025 Welcome to your MDCAT Biology Quiz 01 - ACELLULAR LIFE Name Email Phone 1. Viruses are primarily classified based on: A) Color B) Mode of reproduction C) Structure and genetic material D) Presence of cytoplasm None 2. Viruses that infect bacteria are known as: A) Arboviruses B) Mycoviruses C) Bacteriophages D) Phycoviruses None 3. The genetic material in most animal viruses is: A) Double-stranded DNA B) Single-stranded RNA C) Single-stranded DNA D) Circular DNA None 4. TMV (Tobacco Mosaic Virus) contains: A) DNA B) RNA C) Both DNA and RNA D) Proteins only None 5. Which shape is seen in bacteriophages? A) Rod-shaped B) Icosahedral C) Complex D) Helical None 6. Viruses having RNA as genetic material are called: A) DNA viruses B) Retroviruses C) Lytic viruses D) Cytoviruses None 7. Host of TMV is: A) Humans B) Dogs C) Tobacco plants D) Bacteria None 8. HIV belongs to which viral group? A) DNA virus B) RNA virus C) Arbovirus D) Orthomyxovirus None 9. Which viral structure is found in influenza virus? A) Helical B) Polyhedral C) Complex D) Cuboidal None 10. Viruses without envelopes are called: A) Enveloped viruses B) Naked viruses C) Spherical viruses D) Mutant viruses None 11. Which disease is caused by a DNA virus? A) AIDS B) Hepatitis B C) Polio D) Rabies None 12. Viruses infect: A) Only animals B) Only plants C) Only bacteria D) All types of organisms None 13. The smallest viruses infect: A) Plants B) Animals C) Archaebacteria D) Bacteria None 14. HIV targets which cells in humans? A) Red blood cells B) Platelets C) Helper T cells (CD4 cells) D) B cells None 15. Enveloped viruses have: A) Cell walls B) Outer lipid membranes C) Cilia D) Mitochondria None 16. Rabies virus is transmitted through: A) Air B) Water C) Animal bite D) Contaminated food None 17. Viruses are inactive: A) Inside host cells B) Outside host cells C) During reproduction D) During infection None 18. Genetic material of viruses can be: A) Only DNA B) Only RNA C) Both DNA or RNA D) Proteins only None 19. The protein coat of viruses is called: A) Envelope B) Capsid C) Nucleus D) Cytoplasm None 20. Viruses are considered: A) Living only B) Non-living only C) Both living and non-living D) Minerals None 21. Full form of AIDS is: A) Auto Immune Deficiency Syndrome B) Acquired Immune Deficiency Syndrome C) Acute Infection Deficiency Syndrome D) Atypical Immuno Disease Syndrome None 22. HIV causes: A) Influenza B) AIDS C) Cancer D) Hepatitis None 23. HIV affects which body system? A) Digestive system B) Respiratory system C) Immune system D) Nervous system None 24. HIV is primarily transmitted through: A) Air B) Contaminated food C) Sexual contact and blood transfusion D) Touch None 25. Which cells are destroyed by HIV? A) Neurons B) CD4 T cells C) Muscle cells D) Liver cells None 26. Common symptom of AIDS is: A) High immunity B) Frequent infections C) Weight gain D) Increased red blood cells None 27. HIV can spread from mother to child: A) Only after birth B) During pregnancy, childbirth, and breastfeeding C) Through inheritance D) Never None 28. AIDS was first reported in: A) 1975 B) 1981 C) 1990 D) 2000 None 29. Which test is used for HIV diagnosis? A) MRI B) CT scan C) ELISA test D) X-ray None 30. Which enzyme is found in HIV? A) Helicase B) Reverse transcriptase C) DNA polymerase D) RNA polymerase None 31. HIV genome is: A) Double-stranded DNA B) Single-stranded DNA C) Single-stranded RNA D) Double-stranded RNA None 32. Which is NOT a mode of HIV transmission? A) Unprotected sex B) Sharing needles C) Handshaking D) Blood transfusion None 33. Which organ gets damaged in AIDS? A) Lungs B) Heart C) Immune system D) Kidneys None 34. Incubation period of HIV ranges from: A) Days B) Weeks C) Months to years D) Hours None 35. Which fluid does NOT transmit HIV? A) Blood B) Semen C) Breast milk D) Sweat None 36. AIDS is a: A) Genetic disease B) Autoimmune disease C) Communicable viral disease D) Nutritional disorder None 37. Which country reported the first case of AIDS? A) India B) USA C) France D) Canada None 38. Anti-retroviral therapy (ART) is used for: A) Curing HIV B) Reducing HIV progression C) Destroying HIV permanently D) None of these None 39. Kaposi’s sarcoma in AIDS patients is a type of: A) Bacterial infection B) Fungal infection C) Cancer D) Viral infection None 40. HIV virus belongs to which family? A) Retroviridae B) Orthomyxoviridae C) Rhabdoviridae D) Poxviridae None 41. AIDS patients suffer from: A) Immunosuppression B) Hypersensitivity C) Autoimmunity D) Anaemia only None 42. HIV particles target: A) Platelets B) Memory B cells C) CD4 T lymphocytes D) Macrophages only None 43. HIV multiplication involves: A) Only DNA synthesis B) Reverse transcription of RNA C) Protein replication D) Lipid degradation None 44. Common symptoms of AIDS include: A) Sudden paralysis B) Frequent fevers and weight loss C) Enhanced memory D) Increased appetite None 45. HIV contains: A) Only proteins B) RNA and enzymes C) DNA only D) Carbohydrates only None 46. Can HIV be transmitted through kissing? A) Yes, easily B) No, unless blood is present C) Always D) None of these None 47. AIDS is characterized by: A) Strong immune response B) Deficiency of immune response C) Hyperimmunity D) None of these None 48. HIV cannot survive: A) Inside body fluids B) In oxygen-rich blood C) Outside the human body for long D) In the digestive tract None 49. Primary method of HIV prevention is: A) Avoiding cooked food B) Washing hands C) Protected sexual practices and safe blood transfusion D) Wearing helmets None 50. HIV leads to: A) Polio B) Measles C) AIDS D) Mumps None Time's up
