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The mucous membranes of a body, involved...

The mucous membranes of a body, involved in preventing the initial attempt of a microbes to cause a disease acts as _____________

A

Physical barrier

B

Anatomical barrier

C

Physiological barrier

D

Phagocytic barrier

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Diseases in humans can be prevented by administration of vaccines. Vaccines contain inactivated, killed / weakened pathogens that can be used as antigens to provide either permanent or temporary immunity against a specific pathogen or disease. Conventional methods of vaccine preparation include the use of completely or partially killed pathogens. These vaccines however posed a risk of causing disease in case of some persons. Biotechnological techniques provide alternative antigenic genes isolated in the laboratory that can be used to make pure forms of proteins that can be used as antigens to activate the immune system. Recent developments in this field include production of edible vaccines like transgenic potatoes. Consumption of raw potatoes is speculated to develop immunity against the pathogen. These edible vaccines are produced by inserting genes isolated from specific pathogens to produce the antigen in the plants. Based on the given paragraph answer the following questions. i) How can people immunized with vaccines containing semi-killed pathogens have a risk of contracting a disease?

Diseases in humans can be prevented by administration of vaccines. Vaccines contain inactivated, killed / weakened pathogens that can be used as antigens to provide either permanent or temporary immunity against a specific pathogen or disease. Conventional methods of vaccine preparation include the use of completely or partially killed pathogens. These vaccines however posed a risk of causing disease in case of some persons. Biotechnological techniques provide alternative antigenic genes isolated in the laboratory that can be used to make pure forms of proteins that can be used as antigens to activate the immune system. Recent developments in this field include production of edible vaccines like transgenic potatoes. Consumption of raw potatoes is speculated to develop immunity against the pathogen. These edible vaccines are produced by inserting genes isolated from specific pathogens to produce the antigen in the plants. Based on the given paragraph answer the following questions. What is the main advantage of vaccines over antibiotics?

Diseases in humans can be prevented by administration of vaccines. Vaccines contain inactivated, killed / weakened pathogens that can be used as antigens to provide either permanent or temporary immunity against a specific pathogen or disease. Conventional methods of vaccine preparation include the use of completely or partially killed pathogens. These vaccines however posed a risk of causing disease in case of some persons. Biotechnological techniques provide alternative antigenic genes isolated in the laboratory that can be used to make pure forms of proteins that can be used as antigens to activate the immune system. Recent developments in this field include production of edible vaccines like transgenic potatoes. Consumption of raw potatoes is speculated to develop immunity against the pathogen. These edible vaccines are produced by inserting genes isolated from specific pathogens to produce the antigen in the plants. Based on the given paragraph answer the following questions. Why are vaccines produced using biotechnology safer than conventional vaccines?

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Diseases in humans can be prevented by administration of vaccines. Vaccines contain inactivated, killed / weakened pathogens that can be used as antigens to provide either permanent or temporary immunity against a specific pathogen or disease. Conventional methods of vaccine preparation include the use of completely or partially killed pathogens. These vaccines however posed a risk of causing disease in case of some persons. Biotechnological techniques provide alternative antigenic genes isolated in the laboratory that can be used to make pure forms of proteins that can be used as antigens to activate the immune system. Recent developments in this field include production of edible vaccines like transgenic potatoes. Consumption of raw potatoes is speculated to develop immunity against the pathogen. These edible vaccines are produced by inserting genes isolated from specific pathogens to produce the antigen in the plants. Based on the given paragraph answer the following questions. What is the disadvantage of transgenic potatoes containing edible vaccines?

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Read the paragraph and answer the questions given below : Dietary fibre - found mainly in fruits, vegetables, whole grains and legumes — is probably best known for its ability to prevent or relieve constipation. But foods containing fibre can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes, heart disease and some types of cancer. Dietary fibre, also known as roughage or bulk, includes the parts of plant foods your body can't digest or absorb. Unlike other food components, such as fats, proteins or carbohydrates — which your body breaks down and absorbs — fibre isn’t digested by your body. Instead, it passes relatively intact through your stomach, small intestine and colon and out of your body. Answer the question: Enlist the advantages of fibres in diet.

CHETANA PUBLICATION-Human Health and Diseases-EXCERCISE
  1. Vector host of malaria is

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  2. Becterial pneumonia is caused by

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  3. The mucous membranes of a body, involved in preventing the initial att...

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  4. Dengue virus is transmitted through bite of vector

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  5. Antibody producting plasma cells are derived from

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  6. Select and write the most appropriate answer from given alternatives f...

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  7. Select and write the most appropriate answer from given alternatives f...

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  8. Select and write the most appropriate answer from given alternatives f...

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  9. Attempt following questions in one sentence only: Define- pathogenicit...

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  10. Attempt following questions in one sentence only: What is oncology?

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  11. Attempt following questions in one sentence only: What is confirmatory...

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  12. Attempt following questions in one sentence only: Name the haemolytic ...

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  13. Describe symptoms of ascariasis.

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  14. Differentiate between antigen and antibody.

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  15. Why is smoking a bad habit?

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  16. Write symptoms of pneumonia.

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  17. Make a table using following information about different species of pl...

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  18. What are the various public health measures, which you would suggest a...

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  19. What is cancer? Differentiate between benign tumor and malignant tumor...

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  20. Describe the structure of antibody.

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