Tag: infectious diseases

Quizzes (3) Questions (152)

Questions Related to infectious diseases

Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

The most mutable virus is

  1. Chicken Pox Virus
  2. $HIV$

  3. Influenza Virus

  4. Dengue Virus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Each generation of HIV (from each infected human cell) contains some percentage of variations, or mutations, from the parent virus, and HIV has much more than its proper share of such variations." In fact, it is the most mutable virus known." Until the discovery of this virus, it was commonly said that the influenza virus was the most mutable virus known because each generation changed its coat to some degree. HIV is highly mutable. Because of the virus' ability to rapidly respond to selective pressures imposed by the immune system, the population of the virus in an infected individual typically evolves so that it can evade the two major arms of the adaptive immune system; humoral (antibody mediated) and cellular (mediated by T cells) immunity.

So, the correct answer is 'HIV'.

Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

AIDS does not spread through

  1. Common syringes and needles

  2. Blood transfusion

  3. Sexual contact

  4. Sharing meals
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • HIV is spread only in certain body fluids from a person who has HIV. These fluids are blood, semen, pre-seminal fluids, rectal fluids, vaginal fluids, and breast milk. In the United States, HIV is spread mainly by having sex or sharing injection drug equipment, such as needles, with someone who has HIV.
  • HIV doesn't spread by hugging, shaking hands, sharing toilets, sharing dishes, or closed-mouth or “social” kissing with someone who is HIV-positive.

So, the correct answer is 'Sharing meals'.

Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

AIDS day

  1. 1$^{st}$ May
  2. 5$^{st}$ December
  3. 31$^{st}$ June
  4. 1$^{st}$ December
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • AIDS (acquired immunodeficiency syndrome) is caused by the HIV virus. It breaks down the body immune system, leaving the patient vulnerable to a host of life-threatening opportunistic infections.
  • World AIDS Day, designated on 1 December every year since 1988, is an international day dedicated to raising awareness of the AIDS pandemic caused by the spread of HIV infection and mourning those who have died of the disease.
  • So, the correct answer is '1st December'.
Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

Which of the below given statements are true?

  1. A person can contract AIDS due to unprotected sexual intercourse with an infected person.

  2. A person can contract AIDS while getting permanent tattooing with an infected needle.

  3. A person cannot contract AIDS by donating blood to a HIV infected person

  4. All the statements are true.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

AIDS is a disorder of cell-mediated immune system of the body. AIDS is transmitted only by a contact of infected cells containing the blood of a patient with the blood of a healthy person as in :

1. Unprotected sexual intercourse with an infected partner if there is tissue injury to permit blood contact.
2. Use of contaminated needles and syringes to inject drugs and vaccines.
3. Use of contaminated razors for shaving.
4. Use of contaminated needles for boring pina or tattooing.
5. Transfusion of infected blood. 
6. Artificial insemination.
7. Parturition from mother to baby due to rupturing of blood vessels.
AIDS is not a contagious disease. It does not spread by casual contact such as a handshake, working together, sharing meals, clothes. It is also not spread by coughing or sneezing. Even the blood donation to an infected person will not contract the disease as blood from a healthy person is going to the body of the diseased person and there is no entry of infected blood into the healthy person.
Thus, the correct answer is option D. 

Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

Read the following statements regarding the HIV virus.
A. It is a type of retrovirus which has an envelope enclosing the diploid RNA genome
B. It multiplies in helper $T$ cells and produces progeny virus.
C. In the macrophages of the host, RNA genome of the virus replicates to form viral DNA
D. Reverse transcriptase becomes inactive in the host cell.
How many of the above statements are correct?

  1. One

  2. Two

  3. Four

  4. Three
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

HIV is an enveloped retrovirus. Each virus particle contains two copies of an RNA genome. Hence HIV is a type of retrovirus which has an envelope enclosing the diploid RNA genome.

HIV infects white blood cells in the body’s immune system called T-helper cells. The virus attaches itself to the T-helper cell, takes control of its DNA, replicates itself and releases more HIV into the blood and produces progeny virus.
Without reverse transcriptase, the viral genome couldn't become incorporated into the host cell, and couldn't reproduce.
So, the correct option is 'Two'.

Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

Which of the following is correct regarding AIDS causative HIV?

  1. HIV does not escape but attacks the acquired immune response

  2. HIV is enveloped virus containing one molecule of single stranded RNA and one molecule of reverse transcriptase

  3. HIV is envelope virus that contains two identical molecules of single stranded RNA and two molecules of reverse transcriptase

  4. HIV is unenveloped retrovirus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Human Immunodeficiency Virus (HIV) is an enveloped retrovirus that specifically contains two identical molecules of single-stranded RNA and two molecules of the enzyme reverse transcriptase enclosed within its protein core.

Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

Which of the following is not the mode of spread of AIDS?

  1. Contaminated blood transfusion

  2. Vertical transmission

  3. Contaminated water and food

  4. Both (b) and (c)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

HIV is transmitted through specific body fluids such as blood, semen, vaginal secretions, and breast milk. It is not transmitted through casual contact, air, or contaminated water and food.

Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

Only one of the following four ways through which AIDS can spread

  1. Infected needles and syringes

  2. Through mosquito bites

  3. Looking after AIDS patient

  4. Shaking hands, coughing, sneezing, hugging
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

AIDS is primarily transmitted through the exchange of bodily fluids, such as blood. Sharing needles and syringes is a high-risk activity for HIV transmission, whereas casual contact like shaking hands or mosquito bites does not spread the virus.

Multiple choice zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

HIV decreases natural immunity of the body by destroying 

  1. Erythrocytes

  2. Antibodies

  3. T-Lymphocytes

  4. B-Lymphocytes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The T helper cells (Th cells), also known as CD4 cells, are a type of T cell that plays an important role in the immune system, particularly in the adaptive immune system. HIV is a virus that attacks the CD4+ cells in the immune system. This destroys the CD4+ cells. When the number of CD4+ cells in your body is low, your immune system becomes weaker. This makes it harder to fight infections.

So, the correct answer is 'T-Lymphocytes'.