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AP Biology Unit 8E: Biology in Human Welfare & Disease Prevention — practice questions

Explore 64 free Unit 8E: Biology in Human Welfare & Disease Prevention questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 8E: Biology in Human Welfare & Disease Prevention questions and exercises with answers

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The disease caused by Entamoeba histolytica in humans isRead the answer and worked solution →Filariasis (elephantiasis) is caused byRead the answer and worked solution →The Widal test is used to diagnose which disease?Read the answer and worked solution →Innate immunity is a type ofRead the answer and worked solution →The active form of AIDS causing virus HIV is aRead the answer and worked solution →The primary target of HIV in humans isRead the answer and worked solution →Which is NOT a preventive measure against the spread of HIV?Read the answer and worked solution →Benign tumours differ from malignant tumours in that benign tumoursRead the answer and worked solution →Which of the following is a known carcinogen leading to cancer?Read the answer and worked solution →Opioid drugs act primarily on which receptors of the central nervous system?Read the answer and worked solution →Vaccination works by producingRead the answer and worked solution →Which of the following pairs is NOT correctly matched?Read the answer and worked solution →Typhoid fever in human beings is caused byRead the answer and worked solution →Which test is used to confirm typhoid fever?Read the answer and worked solution →Mary Mallon, known as Typhoid Mary, is remembered in medicine because sheRead the answer and worked solution →Malaria is caused by an organism belonging to which group?Read the answer and worked solution →Which species of Plasmodium causes the most serious form of malaria?Read the answer and worked solution →Plasmodium enters the human body in which infectious form?Read the answer and worked solution →Amoebiasis is caused byRead the answer and worked solution →Elephantiasis, or filariasis, is caused byRead the answer and worked solution →Ringworm in humans is caused by organisms belonging to which group?Read the answer and worked solution →Immunity present at the time of birth and not specific to any pathogen is calledRead the answer and worked solution →How many types of barriers make up innate immunity?Read the answer and worked solution →The mucus coating that traps micro-organisms lines the epithelium of which tracts?Read the answer and worked solution →Antibodies are produced by which cells?Read the answer and worked solution →Which of these is a class of antibody?Read the answer and worked solution →Graft rejection after an organ transplant is due mainly toRead the answer and worked solution →Immunity produced when the host's own body makes antibodies after exposure to antigens is calledRead the answer and worked solution →Giving ready-made antibodies directly to a patient producesRead the answer and worked solution →Colostrum protects a newborn because it is rich in which antibody class?Read the answer and worked solution →

Worked practice questions

The disease caused by Entamoeba histolytica in humans is

  1. Ringworm caused by soil-borne fungi
  2. Malaria transmitted by female Anopheles
  3. Amoebic dysentery, also called amoebiasis
  4. Filariasis affecting the lymphatic vessels
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Correct answer: C. Amoebic dysentery, also called amoebiasis

1. Entamoeba histolytica is a protozoan parasite of the large intestine. 2. It causes amoebiasis, also called amoebic dysentery. 3. Symptoms: constipation, abdominal pain, stools with mucus and blood clots. 4. Houseflies act as mechanical carriers from faeces to food. _Source: syllabus Biology, Ch 7 "Human Health and Disease", §7.1_

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Filariasis (elephantiasis) is caused by

  1. Ascaris lumbricoides
  2. Trichophyton
  3. Plasmodium vivax
  4. Wuchereria bancrofti
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Correct answer: D. Wuchereria bancrofti

1. syllabus names Wuchereria (W. bancrofti and W. malayi) as filarial worms. 2. They cause chronic inflammation of lymphatic vessels — filariasis / elephantiasis. 3. Genital organs are often affected, resulting in gross deformities. 4. Transmitted by the bite of a female mosquito vector. _Source: syllabus Biology, Ch 7 "Human Health and Disease", §7.1_

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The Widal test is used to diagnose which disease?

  1. Typhoid
  2. Malaria
  3. Common cold
  4. AIDS
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Correct answer: A. Typhoid

1. The Widal test detects antibodies against Salmonella antigens. 2. Positive Widal indicates typhoid infection. 3. Your syllabus mentions the historic case of Mary Mallon ("Typhoid Mary"), a chronic carrier. 4. Malaria diagnosis relies on blood smear microscopy; AIDS on antibody testing. _Source: syllabus Biology, Ch 7 "Human Health and Disease", §7.1_

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