Mesophyll cells, which liberate malic acid at night time, are of

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 Multiple Choice QuestionsMultiple Choice Questions

301.

Lysosomes are the store house of :

  • ATP

  • sugar

  • proteins

  • hydrolytic enzymes


302.

The genetic material of prokaryotic cell is called :

  • nucleus

  • nucleolus

  • nucleoid

  • centromere


303.

In prokaryotes, the genetic material is :

  • linear DNA with histones

  • circular DNA with histones

  • linear DNA without histones

  • circular DNA without histones


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304.

Mesophyll cells, which liberate malic acid at night time, are of :

  • C4 - plants

  • C3 - plants

  • C2 - plants

  • C1 - plants


A.

C4 - plants

The plants in which first stable product for the initial CO2 fixation in dark reaction, is malic acid are known as C4 -plants. During night time, carbon dioxide combines with phosphoenol pyruvic acid (PEPA) to form oxaloacetic acid in mesophyll chloroplasts which converts to malic acid.


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305.

What is the structural element of cell wall?

  • Matrix

  • Microtubules

  • Microfibrils

  • Arabinogalactans


306.

The Gram (-) bacteria detect and respond to the chemicals in their surroundings by

  • muramic acid

  • lipopolysaccharide

  • volutin granules

  • porin


307.

Small particles projecting from the inner membranes and cristae of mitochondria are known as

  • myeloid bodies

  • microsomes

  • informosomes

  • oxysomes


308.

The resolving power of a compound light microscope will be greatest if the source of light is

  • blue

  • green

  • yellow

  • red


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309.

Primary and secondary active transport both

  • generate ATP

  • use ATP directly

  • can move solutes against their concentration gradient

  • include the passive movement of glucose molecule


310.

Which type of membrane is most abundant within a cell?

  • ER membrane

  • Nuclear membrane

  • Golgi membrane

  • Plasma membrane


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