What is contact inhibition from Biology Human Health and Disease

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 Multiple Choice QuestionsShort Answer Type

61. Explain the following terms :

(i) Benign tumour (ii) Malignant tumour (iii) Metastasis.

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62. What is sarcoma ?
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63. Define the following :

(1) Malignant tumours (ii) Carcinogenic.

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64. What is contact inhibition


Contact inhibition is the condition when contact with other cells hampers or prevents the uncontrolled growth of the cells. It is shown by normal cells.
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65. Differentiate between normal cells and cancer cells.
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 Multiple Choice QuestionsLong Answer Type

66. Briefly explain the followings :

Drugs, Drug addiction, Tranquillisers, Depressant and Stimulants.

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 Multiple Choice QuestionsShort Answer Type

67. Explain the following : Psychedelic drugs and Barbiturates.
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 Multiple Choice QuestionsLong Answer Type

68. What is Cannabis ? List its main derivatives.
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 Multiple Choice QuestionsShort Answer Type

69. Draw structural formula of morphine and cannabinoid.
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70. Name some hallucinogens. What are their effects on human body ?
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