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Human Health and Disease

Short 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

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65. Differentiate between normal cells and cancer cells.

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Long Answer Type

66. Briefly explain the followings :

Drugs, Drug addiction, Tranquillisers, Depressant and Stimulants.

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Short Answer Type

67. Explain the following : Psychedelic drugs and Barbiturates.

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Long Answer Type

68. What is Cannabis ? List its main derivatives.

Cannabis is the plant that produces the drug Cannabinoids that act with receptors of brain. Three kinds of drugs are obtained from these plants

(1) Hashish or Charas is obtained from flowering tops of female plants.

(2) Bhang is obtained from dry leaves.

(3) Ganja is obtained from small leaves and bracts of inflorescence.

Marijuana is another drug obtained from Cannabis sativa. The common effects of these drugs is feeling of euphoria, hallucinations, rise in blood sugar level and energy.

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Short 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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