Multiple Choice Questions

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Feedback inhibition of enzymes is affected by which ofthe following

  • Enzyme

  • Substrate

  • End products

  • Intermediate end products


C.

End products

Feedback inhibition is the phenomenon where the output of a process is used as an input to control the behavior of the process itself, oftentimes limiting the production of more product. Although negative feedback is used in the context of inhibition, negative feedback may also be used for promoting a certain process


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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


Protein coat of virus is known as

  • capsid

  • virion

  • viroid

  • bacterial wall


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


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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


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

  • Hg

  • Cd

  • Pb

  • As


Respiratory enzymes are present in the following organelle

  • peroxysome

  • chloroplast

  • mitochondrion

  • lysosome


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


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Vascular tissue in higher plants develop from which of the following

  • Procambium 

  • Protoderm

  • Periblem

  • Cortex