Multiple Choice Questions

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The carcinoma, a type of cancer, originates from

  • blood

  • connective tissue

  • epithelial tissue

  • lymph gland


C.

epithelial tissue

Carcinoma refers to the malignant tumours or cancer of epidermal/epithelial tissues. e.g., breast cancer, skin cancer, lung cancer, glands cancer etc.

Sarcoma is the cancer of mesodermal or connective tissues such as cancer of bone (osteoma), cancer of adipose tissue (lipoma) cancer of lymph vessels (lymphoma). Blood cancer is also known as leukaemia.


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Homo erectus evolved during

  • Oligocene

  • Pliocene

  • Pleistocene

  • Miocene


The expanded name of MRI is

  • Medical Reserach Instrument

  • Magnetic Resonance Imaging

  • Magnetic Research Institute

  • Medical Resonance Imaging


The important gas which was absent during the formation of Earth is

  • oxygen

  • hydrogen

  • nitrogen

  • carbon dioxide


For a clean environment, which one following is not essential?

  • Producer

  • Consumer

  • Decomposer

  • Polluter


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In spermatogenesis, reduction division of chromosome occurs during conversion of

  • spermatogonia to primary spermatocytes

  • primary spermatocytes to secondary spermatocytes

  • secondary spermatocytes to spermatids

  • spermatids to sperms


Melting of DNA at an elevated temperature (70°C) is primarily due to the breakdown of

  • phosphodiester bonds

  • glycosidic bonds

  • disulphide bonds

  • hydrogen bonds


The usual source of restriction endonucleases used in gene cloning is from

  • fungi

  • bacteria

  • plants

  • viruses


Humoral immunity is mediated by

  • cytotoxic T-cell

  • plasma cell

  • eosinophil

  • neutrophil


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Which one of the following is not included under in situ conservation?

  • National park

  • Wild life sanctuary

  • Zoological garden

  • Biosphere reserve