Multiple Choice Questions

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TCA cycle enzymes are located in

  • cristae

  • outer membrane

  • mitochondrial matrix

  • mitochondrial intermembrane space


C.

mitochondrial matrix

TCA cycle enzymes are soluble proteins located in the mitochondrial matrix space, except for succinate dehydrogenase, which is an integral membrane protein that is firmly attached to the inner surface of the mitochondrial inner membrane, where it communicates directly with components in the respiratory chain.


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The eukaryotic cells have all of the followings except

  • peptidoglycan in the cell wall

  • the 80 S ribosome

  • nuclear membrane

  • mitochondria


Which one of the followings is not a characteristic feature of mammals?

  • Diphyodont tooth

  • Ten pairs of cranial nerves

  • Seven cervical vertebrae

  • Left aortic arch in the circulatory system


Which one of the followings is the functional unit of hearing?

  • Utricle

  • Organ of Zuckerkandl

  • Organ of Corti

  • Vestibular apparatus


The heart is covered by

  • epicardium

  • pericardium

  • supracardium

  • endocardium


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Which one of the followings is not a refractive medium of the eye?

  • Lens

  • Vitreous humour

  • Aqueous humour

  • Pupil


Which one of the following statements is incorrect?

  • Insects have one pair of antenna

  • Millipeds possess two pairs of appendages in each segment of the body

  • Prawns have two pairs of antenna

  • Animals belonging to the phylum- Porifera have nematocys


Vernalisation promotes flowering by

  • low temperature

  • high temperature

  • prolonged photoperiod

  • short photoperiod


C4 pathway is advantageous over C3 pathway in plants as it

  • occurs in relatively low CO2 concentration

  • uses more amount of water

  • occurs in relatively low O2 concentration

  • is less efficient in energy utilisation


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Which of the followings does not occur in the interphase of eukaryotic cell division?

  • Increase of ATP synthesis

  • Increase of DNA synthesis

  • Increase of RNA synthesis

  • Reduction in cell size