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TLS Online TPP Program

#Question id: 10159

The ambient temperature exerts an important influence over Ω and the concentrations of CO2 and O2 around the active site of rubisco. Warmer environments have the effect of;  Find the incorrect one?

#I Life Science/ Life Sciences Group – I-V
  1. increasing the oxygenase activity of rubisco more than the carboxylase activity. The greater increase of KC for CO2 than of KO for O2 diminishes the W of rubisco
  2. The increase of [O2]/[CO2] decreases the vC/vO ratio; that is, the oxygenase activity of rubisco prevails over the carboxylase activity
  3. Increasing the stomatal aperture to conserve water, the stomatal closure the uptake of atmospheric CO2, thereby decreasing CO2 at the active site of rubisco

  4. warmer environments significantly limit the efficiency of photosynthetic carbon assimilation because the progressive increase in temperature tilts the balance away from photosynthesis (carboxylation) and toward photorespiration (oxygenation)

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TLS Online TPP Program

#Question id: 13029

#SCPH28 | Zoology

Mutation at Vir E and Vir B can repectively cause :
TLS Online TPP Program

#Question id: 944

#SCPH06 I Botany

Because they lack aspartate kinase and aspartate semialdehyde dehydrogenase, ________ cannot synthesize lysine, methionine or threonine.
TLS Online TPP Program

#Question id: 10783

#SCPH05 I Biotechnology

which of the following compounds are more diversified in terms of soluibility such as : Some are soluble only in organic solvents, some are water-soluble carboxylic acids and glycosides, and others are large, insoluble polymers;
TLS Online TPP Program

#Question id: 3888

#SCPH01 Biochemistry

Which of these polymerases does not require a template?
TLS Online TPP Program

#Question id: 11548

#I Life Science/ Life Sciences Group – I-V

If a portion of the pancreas is surgically removed from a rat and the rat subsequently loses its appetite, one explanation is that the removed portion contains cells that secrete a chemical signal that somehow stimulates appetite. Given this scenario, what type of chemical signaling is occurring?