Important Questions of Cell : The Unit of Life Biology | Zigya

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 Multiple Choice QuestionsLong Answer Type

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171. How do neutral solutes move across the plasmalemma ? Can the polar molecules also move across it in the same way ? If not, then how are these transported across the membrane? 
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 Multiple Choice QuestionsShort Answer Type

172.

Describe the structure of the following with the help of labelled diagrams

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173. Describe the structure of the following with the help of labelled diagrams. 

ii. Centrosome
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 Multiple Choice QuestionsMultiple Choice Questions

174.

Mitochondria and choloroplast are :
I. semi-autonomous organelles.
II. formed by division of pre-existing  organelles and they contain DNA but lack protein synthesizing machinery. 

  • II is true but I is false

  • I is true but II is false

  • Both I and II are false

  • Both I and II are false

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175.

Which one of the following cell organelles is enclosed by a single membrane?

  • Chloroplasts

  • Lysosomes

  • Nuclei

  • Nuclei

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176.

One of the major components of cell wall of most fungi is

  • peptidoglycan

  • cellulose

  • hemicellulose

  • hemicellulose

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177.

A complex of ribosomes attached to a single strand of RNA is known as 

  • Polymer

  • Polypeptide

  • Okazaki's fragment

  • Okazaki's fragment

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178.

Water-soluble pigments found in plant cell vacuoles are

  • chlorophylls

  • carotenoids

  • anthocyanins

  • anthocyanins

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179.

In a chloroplast the highest number of protons are found in

  • lumen of thylakoids

  • inter membrane space

  • antennae complex

  • antennae complex

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180.

A phosphoglyceride is always made up of

  • only a saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached

  • only an unsaturated fatty acid esterified to glycerol molecule to which a phosphate group is also attached

  • a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached

  • a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached

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