Explain what is meant by metastasis?

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Chapter 7 NCERT Class 12 Biology SOLUTIONS

Explain what is meant by metastasis?

Question:

Explain what is meant by metastasis?

Answer:

Metastasis is the process by which cancer cells break away from the original site, travel through blood/lymph, and form new tumors in other parts of the body.

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(All Q's of this Chapter solved)

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What is amoebiasis?

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What happens if anaemia is left untreated?

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Can anaemia be prevented?

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What foods help prevent or treat anaemia?

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How is anaemia treated?

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What are the types of anemia?

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How is anaemia diagnosed?

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Who is at risk of developing anemia?

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What are the symptoms of anemia?

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What are the common causes of anemia?

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What is anemia?

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Can amoebiasis recur after treatment?

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Is amoebiasis contagious?

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How can amoebiasis be prevented?

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What complications can arise from untreated amoebiasis?

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Can amoebiasis be treated?

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How is amoebiasis diagnosed?

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Who is at risk of amoebiasis?

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What are the symptoms of amoebiasis?

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How is amoebiasis transmitted?

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In your view what motivates youngsters to take to alcohol or drugs and how can this be avoided?

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Why is it that once a person starts taking alcohol or drugs, it is difficult to get rid of this habit? Discuss it with your teacher?

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Do you think that friends can influence one to take alcohol/drugs? If yes, how may one protect himself/herself from such an influence?

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List the harmful effects caused by alcohol/drug abuse?

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How is a cancerous cell different from a normal cell?

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What is the mechanism by which the AIDS virus causes deficiency of the immune system of the infected person?

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What are the various routes by which transmission of human immunodeficiency virus takes place?

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Draw a well-labelled diagram of an antibody molecule?

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Differentiate the following and give examples of each: (a) Innate and acquired immunity

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The following are some well-known abbreviations, which have been used in this chapter. Expand each one to its full form: (a) MALT?

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Name the primary and secondary lymphoid organs?

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Discuss with your teacher what ‘a suitable gene’ means, in the context of DNA vaccines?

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What measure would you take to prevent water-borne diseases?

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How does the transmission of each of the following diseases take place? (a) Amoebiasis

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In which way has the study of biology helped us to control infectious diseases?

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What are the various public health measures, which you would suggest as safeguard against infectious diseases?

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Can someone with HIV live a normal life?

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What is the global impact of AIDS?

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What is the role of ART in HIV treatment?

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Is AIDS contagious through casual contact?

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How can HIV be prevented?

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Can AIDS be cured?

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What are the symptoms of AIDS?

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How is HIV transmitted?

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What is the difference between HIV and AIDS?

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What is AIDS?

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