Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

11.

Deoxyribonuclease and ribonuclease are secreted by

  • liver

  • stomach

  • pancrease

  • kidney


12.

Haemodialysis helps in patient having

  • uremia

  • anaemia

  • diabetes

  • goitre


13.

X- rays are used in 

  • ECG

  • EEG

  • CT- scan

  • Endoscopy


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14.

The thin filaments of a muscle fibre are made up of

  • actin, troponin, tropomyosin

  • actin, troponin

  • myosin, troponin

  • actin, tropomyosin


A.

actin, troponin, tropomyosin

The thin filaments of a muscle fibre are made up of actin, troponin and tropomyosin. One thin filament probably contains 300-400 actin molecules, about 50 tropomyosin and 50 troponin. It is said that tropomyosin plays a vital role in sensitizing the contractile proteins (actin and myosin) to calcium ions.


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15.

In which part of mitochondria does ATP synthesis occur?

  • F1

  • F0

  • Cristae

  • Inner membrane of mitochondria


16.

Fat, prior to its oxidation associate with

  • cyclic AMP

  • Co- A

  • GMP

  • ATP


17.

Schwann cell is found around

  • axon

  • cyton

  • dendrite

  • dendron


18.

Which part of retina consists of only cones?

  • Fovea centralis

  • optic nerve

  • Blind spot

  • Orasmata


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19.

Heparin is secreted by

  • mast cell

  • alveolar cell

  • plasma cell

  • goblet cell


20.

Reflex action involves

  • spinal cord

  • cerbellum

  • medulla oblongata

  • optic lobe


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