. Choose the correct option. 1. Dengue is characterised by a. Chills & fever b. Swelling of legs c. Headache & fever d. Joint pains 2. In mosquito life cycle,two hosts are a. Dog and cat b. Mosquito and dog c. Man and mosquito d. Mosquito and pig 3. A minor infection can change into a severe disease in case of a. AIDS b. Diarrhoea c. Pneumonia d. Cancer 4. Jaundice can be prevented by a. Hepatitis-A vaccination b. Painkillers c. Eating good food d. Wearing clean clothes 5. The target cells of HIV virus in body are a. White blood cells b. Red blood cells c. Cardiac cells d. Nerve cells 6. Which of the following can make you ill if you come in contact with an infected person a. High blood pressure b. Genetic abnormalities c. Sneezing d. Blood cancer 7. Transmission of AIDS can happen through a. Shaking hands b. Hugging c. Transfusion of infected blood d. Playing soccer together 8. Which is a bacterial disease? a. Diphtheria b. Pneumonia c. Tetanus d. All of these 9. Ascariasis is caused by a. Roundworm b. Hookworm c. Pinworms d. Mosquitos 10. Which of these use the biochemical machinery of their host cells? a. H1N1 virus b. Protozoans c. COVID-19 d. Both a & c

Dear student,

1. Dengue is characterised by

a. Chills & fever
b. Swelling of legs
c. Headache & fever
d. Joint pains 

Ans a.  
reason  :- Dengue Fever is an acute viral infection characterized by fever.Other symptoms may include shaking chills, diarrhea, and vomiting

 2. In mosquito life cycle,two hosts are

a. Dog and cat
b. Mosquito and dog
c. Man and mosquito
d. Mosquito and pig
Ans- C
Reason -it is because mosquito can smell the man blood.

3. A minor infection can change into a severe disease in case of
a. AIDS
b. Diarrhoea
c. Pneumonia
d. Cancer

Ans- C
Reason -Pneumonia can be caused by a wide variety of bacteria, viruses and fungi in the air we breathe, which slowly infect our lungs and causes the lungs' air sacs (alveoli) to become inflamed and fill up with fluid or pus. 

4. Jaundice can be prevented by

a. Hepatitis-A vaccination
b. Painkillers
c. Eating good food
d. Wearing clean clothes

Ans- c
Reason-Maintaining a healthy weight helps to prevent jaundice

5. The target cells of HIV virus in body are
a. White blood cells
b. Red blood cells
c. Cardiac cells
d. Nerve cells

Ans- a
Reason-white blood cells(lymphocytes) are targeted by HIV VIRUS.

6. Which of the following can make you ill if you come in contact with an infected person
a. High blood pressure
b. Genetic abnormalities
c. Sneezing
d. Blood cancer

Ans- C
Reason- Through sneezing, the water droplets carrying the microbes enter into the healthy person.


7. Transmission of AIDS can happen through
a. Shaking hands
b. Hugging
c. Transfusion of infected blood
d. Playing soccer together

Ans- C
Reason- HIV (Human immunological disorder Virus) is that the activating agent of AIDS. HIV is unfold from Associate in Nursing infected person to a different person through direct contact with a number of the body’s fluids like mother milk, blood, humor and cum through sexual issues or by sharing the drug instrumentality like needles or from mother to kid throughout accouchement or breastfeeding or via intromission.

8. Which is a bacterial disease?
a. Diphtheria
b. Pneumonia
c. Tetanus
d. All of these

Ans- a
Reason-Diphtheria is a serious bacterial infection that affects the mucous membranes of the throat and nose.

9. Ascariasis is caused by
a. Roundworm
b. Hookworm
c. Pinworms
d. Mosquitos

Ans- A
Reason-Ascariasis is associate infection of the little gut caused by nematodethat could be a species of roundworm

10. Which of these use the biochemical machinery of their host cells?

a. H1N1 virus
b. Protozoans
c. COVID-19
d. Both a & c

Ans- d
Reason- Viruses use the biochemical machinery of their host cell because they are acellular and thier viral populations do not grow through cell division. They use the machinery and metabolism of a host cell to produce multiple copies of themselves, and they assemble in the cell. Here option (a) H1N1 virus and option (b) COVID-19 both are viruses

Regards
 

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