Multiple Choice Questions

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Protein coat of virus is known as

  • capsid

  • virion

  • viroid

  • bacterial wall


A.

capsid

capsid is the protein shell of a virus. It consists of several oligomeric structural subunits made of protein called protomers. The observable 3-dimensional morphological subunits, which may or may not correspond to individual proteins, are called capsomers. The capsid encloses the genetic material of the virus.


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The discovery of gibberellins is related with one of the following

  • blast disease of rice

  • rust disease of wheat

  • bakane disease of rice

  • early blight disease of potato


When the other floral parts are arranged at the base of the gynoecium, the flower is called

  • hypogynous flower

  • perigynous flower

  • epigynous flower

  • agynous flower


Feedback inhibition of enzymes is affected by which ofthe following

  • Enzyme

  • Substrate

  • End products

  • Intermediate end products


Which element is cause of itai 1/N desh itai disease

  • Hg

  • Cd

  • Pb

  • As


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Which part of the human brain is largest

  • Cerebellum

  • Thalamus

  • Cerebrum

  • Medulla


Net yield of ATP molecules in aerobic respiration during Krebs cycle per glucose molecule is

  • 2 ATP molecules

  • 8 ATP molecules

  • 36 ATP molecules

  • 38 ATP molecules


In a CAM plant, the concentration of organic acid

  • increases during the day

  • decreases or increases during the day

  • increases during night

  • decreases during any time


Respiratory enzymes are present in the following organelle

  • peroxysome

  • chloroplast

  • mitochondrion

  • lysosome


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Vascular tissue in higher plants develop from which of the following

  • Procambium 

  • Protoderm

  • Periblem

  • Cortex