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Diseases In Humans And Immunity Free Doubts and Solutions

CBSE - XII Science - Biology - Human Health and Disease

How common cold disease spread from one to another person? {for 2 marks only}

Asked by didwmaanarzary 5th September 2018, 10:19 PM
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CBSE - XII Science - Biology - Human Health and Disease

A glass plate is coated

qsnImg
Asked by brahmaja24 18th May 2018, 1:20 PM
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CBSE - XII Science - Biology - Human Health and Disease

hepattis b vaccine is  a. first generation vaccine  b. second generation vaccine  c. third genertion vaccine  d. none of these

Asked by kaintkaku 1st May 2018, 8:24 AM
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CBSE - XII Science - Biology - Human Health and Disease

The primary and secondary or intermediate host of Taenia solium is?

Asked by imtiyazmulla68 24th April 2018, 9:20 AM
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CBSE - XII Science - Biology - Human Health and Disease

macrophages are derived from  a. monocytes                                                                b. neutrophills  c. lymphocytes                                                              d. basophills please explain the reason also

Asked by kaintkaku 23rd April 2018, 11:49 PM
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CBSE - XII Science - Biology - Human Health and Disease

Name two diseases whose spread can be controlled by the eradication of Aedes mosquitoes.

Asked by priyankasharma 27th March 2018, 3:30 PM
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CBSE - XII Science - Biology - Human Health and Disease

what are the infective stages of diseases like malaria,typhoid,pneumonia,amoebiasis,elephantiasis?

Asked by imtiyazmulla68 22nd March 2018, 8:30 PM
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CBSE - XII Science - Biology - Human Health and Disease

Name the type of antibody and the chemicals responsible for allergic response in human beings.

Asked by sunil2791 6th February 2018, 2:10 PM
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CBSE - XII Science - Biology - Human Health and Disease

Autoimmune diseases are different from immunodeficiency diseases. How? Give one example of each in humans.

Asked by sunil2791 6th February 2018, 2:08 PM
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CBSE - XII Science - Biology - Human Health and Disease

Please explain its answer:

Asked by nitishkrnehu09 18th January 2018, 10:50 PM
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CBSE - XII Science - Biology - Human Health and Disease

Name 2 types of cells which act as cellular barriers to provide innate immunity in human.

Asked by pksunilnair 12th December 2017, 8:54 PM
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CBSE - XII Science - Biology - Human Health and Disease

how can i learn the name of diseses easily????
 
 

Asked by ayushisaxena1301 28th August 2017, 6:19 PM
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CBSE - XII Science - Biology - Human Health and Disease

It is usually said that boys stop growing at the age of 21 and girls at the age of 18.But in reality, we students have noticed that boys stop growing at 18 and girls at 15.So won't we grow tall at 17 years(our present age)? (question is applicable for both boys and girls)

Asked by sunil2791 19th June 2017, 9:22 PM
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CBSE - XII Science - Biology - Human Health and Disease

What is the present status of malaria in the world?Has the severity or the number of cases declined?

Asked by sunil2791 26th May 2017, 1:10 PM
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CBSE - XII Science - Biology - Human Health and Disease

I have selected the topic MALARIA for my biology investigatory project.Kindly please tell me what should be the aim of the project.I am really confused over the topic.

Asked by sunil2791 17th May 2017, 3:45 PM
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CBSE - XII Science - Biology - Human Health and Disease

discuss the immune system of the body with a neat labelled diagram.

Asked by pramodtalukdar 27th October 2016, 8:46 PM
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CBSE - XII Science - Biology - Human Health and Disease

Are sodium ,potassium ,calcium & chloride ions reabsorbed in nephron by active or passive transport, what are other substances reabsorbed by active transport & passive transport?

Asked by shubham.padamwar.3 25th April 2015, 9:02 AM
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CBSE - XII Science - Biology - Human Health and Disease

PERSONS IN COMA ARE DEAD OR LIVING
 

Asked by Mendy 2nd April 2015, 12:12 PM
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CBSE - XII Science - Biology - Human Health and Disease

How cortisole plays role in maintaining cardiovascular centre? Does its deficiency lead to cardiovascular disease? 

Asked by shubham.padamwar.3 9th February 2015, 9:08 PM
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CBSE - XII Science - Biology - Human Health and Disease

Cardiovascular centre is located in medulla oblongata. What is cardiovascular centre & its role? How cortisole plays role in maintaining it? Does its deficiency lead to cardiovascular disease? What is cardiovascular disease?

Asked by shubham.padamwar.3 8th February 2015, 12:17 PM
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CBSE - XII Science - Biology - Human Health and Disease

Lack of pulmonary surfactant produces

1.asthma             2.emphysema

3.cysteic fibrosis     3.respiratory distress syndrome

Asked by shubham.padamwar.3 22nd January 2015, 11:46 PM
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CBSE - XII Science - Biology - Human Health and Disease

Lack of pulmonary surfactant produces

1.asthma             2.emphysema

3.cysteic fibrosis     3.respiratory distress syndrome

Asked by shubham.padamwar.3 22nd January 2015, 11:46 PM
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CBSE - XII Science - Biology - Human Health and Disease

What is the partial pressure of o2 &co2 at various sites like alveoli, tissue/arteries during respiration & what causes the influx of air, considering pressure & Partial o2 pressure is maximum in

1.alveolar air            2. arterial blood      

3.venous blood          4.expired air

Asked by shubham.padamwar.3 22nd January 2015, 11:42 PM
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CBSE - XII Science - Biology - Human Health and Disease

what is STD? what it's work?

Asked by abhilekha121.al 11th November 2014, 12:47 PM
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CBSE - XII Science - Biology - Human Health and Disease

(i)What are allergens? How do human beings respond to them? (ii)What is the basic principle of vaccination? How do vaccines prevent microbial infections? Name the organism from which hepatitis B vaccine is produced. 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

(i)What would happen to immune system, if thymus gland is removed from the body of a person?   (ii)A person shows strong unusual hypersensitive reactions when exposed to certain substances present in the air, identify the condition. Name the cells responsible for such reactions. 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

(i)Why does a doctor administer tetanus antitoxin and not a tetanus vaccine to a child injured in a roadside accident with a bleeding wound? Explain. (ii)Describe the role of lymph nodes in providing immunity. 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

(i)What is a vaccine? Give an example of a vaccine produced by recombinant DNA technology. (ii)Name the disease against which DPT vaccine develops immunity? 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

(i)How do B-cells direct humoral immunity? (ii)Name the type of barrier of innate immunity system which involves macrophages. 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

Name the two-special types of lymphocytes in humans. How do they differ in their roles in immune response? 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

Name and explain the two types of immune responses in humans. 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

Why do the symptoms of malaria not appear immediately after the entry of sporozoites into the human body when bitten by female Anopheles? Explain. 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

List the specific symptoms of pneumonia. Name the causative organism. 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

What is humoral immunity?  

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

A boy of ten years had chicken pox. He is not expected to have the same disease for the rest of his life. Mention how it is possible.

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

Recently chikungunya cases were reported from various parts of the country. Name the vector responsible.

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

High fever, loss of appetite, stomach pain and constipation are some of the symptoms seen in a patient. How would the doctor confirm that the patient is suffering from typhoid and not amoebiasis? 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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CBSE - XII Science - Biology - Human Health and Disease

State two different roles of spleen in the human body. 

Asked by Topperlearning User 11th June 2014, 1:04 PM
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