Biology · General Awareness
Viral Diseases and Immunity
776 Questions
Viral diseases and immunity cover the structure, transmission, and diagnosis of viruses like HIV. Questions focus on disease pathways, immune responses, and prevention. Strong knowledge here provides an edge in biology scoring.
HIV and AIDS structureVirus transmission methodsImmune system deficiencyPathogen risk groupsMedical diagnosis methods
Viral Diseases and Immunity Questions
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Acquired Immunosufficiency Syndrome
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Acquired Indefine Syndrome
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Acquired Immunodefficiency Syndrome
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Australian Intelligent Syndrome
C
Correct answer
Explanation
AIDS stands for Acquired Immunodeficiency Syndrome, the late stage of HIV infection. The term describes it as an acquired (not inherited) condition that causes deficiency in the immune system, leading to a syndrome of opportunistic infections.
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Old Age
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Adolescent
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Children
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None of these
B
Correct answer
Explanation
Adolescents and young adults (ages 15-24) are statistically the most susceptible to HIV infection due to factors including risky sexual behavior, lack of awareness, and biological vulnerability in this developmental stage.
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Within a week
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Within a few months
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within 10 years or more
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Any of the above
D
Correct answer
Explanation
HIV symptoms can vary widely. Some people experience acute retroviral syndrome within 2-4 weeks (acute HIV infection). Others may remain asymptomatic for years. The progression to AIDS typically occurs within 10 years without treatment. Therefore, all timeframes mentioned are possible.
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CD4+ T cells
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Macrophages
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Dendritic Cells
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all of the above
D
Correct answer
Explanation
HIV primarily infects CD4+ T cells (helper T cells), which are crucial for immune function. However, the virus can also infect macrophages and dendritic cells, which act as reservoirs and help transport the virus. Therefore, all three cell types are correct.
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Blood Test
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Urine Test
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Westren-bolt test
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No test required
C
Correct answer
Explanation
The Western blot test is a confirmatory test for HIV infection, typically used after an initial ELISA/EIA screening test shows positive. It detects HIV antibodies in the blood with high specificity. Note: 'Western-bolt' is a typo for 'Western blot'.
B
Correct answer
Explanation
Contraceptive pills only prevent pregnancy by altering hormone levels; they offer zero protection against sexually transmitted infections, including HIV and AIDS. Barrier methods like condoms remain necessary for protection against STIs. Therefore, the statement is false.
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Cut period
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Pain Period
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Plus Period
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Window Period
D
Correct answer
Explanation
The window period is the time between initial HIV infection and when the virus can be detected by standard HIV tests. During this period, a person is infected but may test negative. The answer is Window Period.
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Latex condom
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Polyurethane condom
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Condom with oil-based lubricant
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Condom with water-based lubricant
C
Correct answer
Explanation
Oil-based lubricants can weaken and break down latex condoms, making them ineffective for HIV prevention. Water-based or silicone-based lubricants are safe to use with condoms. Therefore, condoms with oil-based lubricant is not advisable.
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Whitish coating in the throat, tongue or vagina
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Appearance of purple spots in the anus, mouth, nasal passages or on the skin
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Both
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None of these
C
Correct answer
Explanation
Both symptoms described are associated with HIV/AIDS: whitish coating (thrush, a fungal infection) and purple spots (Kaposi's sarcoma, a cancer). These are opportunistic infections that commonly affect people with weakened immune systems due to HIV. The answer is Both.
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Human Immunity Defect Virus
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Human Immuno Deficiency Virus
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Human Immune Deficiency Virus
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None of these
B
Correct answer
Explanation
HIV stands for Human Immunodeficiency Virus, which attacks the immune system and can lead to AIDS (Acquired Immunodeficiency Syndrome). The correct full form is Human Immuno Deficiency Virus.
B
Correct answer
Explanation
Current HIV/AIDS treatments, particularly antiretroviral therapy (ART), can effectively suppress the virus, manage symptoms, and significantly improve quality of life and life expectancy. However, these treatments cannot completely cure HIV - the virus remains in the body and can rebound if treatment is stopped.
B
Correct answer
Explanation
HIV (Human Immunodeficiency Virus) is the virus that attacks the immune system, while AIDS (Acquired Immunodeficiency Syndrome) is the late stage of HIV infection that occurs when the immune system is severely damaged. A person can live with HIV for many years without developing AIDS, especially with proper treatment.
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Shaking someone's hand, by hugging or "dry" kissing someone
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By using the same toilet or drinking from the same glass as an HIV-infected person
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By being exposed to coughing or sneezing by an infected person
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Caring for nose bleeds, biting, and home health care procedures
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Open-mouthed kissing with the infected partner or both of the performers having blood in their mouth due to cuts, open sores, or gum disease
D,E
Correct answer
Explanation
HIV is transmitted through direct contact with infected blood, semen, vaginal fluids, or breast milk. Casual contact like shaking hands, hugging, sharing toilets, or being near coughing/sneezing cannot transmit HIV. However, activities involving blood contact like caring for nosebleeds or open-mouth kissing when blood is present can transmit the virus.
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Red ribbon club
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AIDS Awareness Club
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Club Red : Let’s Talk
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None of the above
C
Correct answer
Explanation
Tata Consultancy Services (TCS) established 'Club Red: Let's Talk' as their corporate initiative to raise HIV/AIDS awareness among employees. The program aims to educate about HIV/AIDS, combat stigma, and encourage open dialogue about the disease in the workplace. Red Ribbon Club is a more generic name used by many institutions.
B
Correct answer
Explanation
Mosquitoes cannot transmit HIV. When a mosquito bites someone, it injects its own saliva, not blood from the previous person. HIV cannot survive in mosquitoes' digestive systems - the virus is broken down as food. The mouth parts of mosquitoes are also too small to contain enough HIV particles to cause infection.