In a population individuals having heterozygous phenotype are more favored than either homozygous, under such condition-

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#Question id: 14754

#Unit 6. System Physiology – Plant

Plant cells have several internal compartments, each of which can differ in its ionic composition. The cytosol and the vacuole are the most important intracellular compartments that determine the ionic relations of plant cells, Ion concentrations in the cytosol and the vacuole are controlled by passive (dashed arrows) and active (solid arrows) transport processes

  

Which of the following statement INCORRECT from the above figure;

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#Question id: 14755

#Unit 6. System Physiology – Plant

Any active transport mechanism that results in the movement of a net electric charge will tend to move the membrane potential away from the value predicted by the Goldman equation. Such a transport mechanism is called

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#Question id: 14862

#Unit 6. System Physiology – Plant

Nitrate transport is an example that is of interest not only because of its nutritional importance, nitrate is negatively charged, and such an electric charge imposes an energy requirement for the transport, Mutants in nitrate transport or nitrate reduction can be selected by growth in the presence of chlorate, Chlorate is;

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#Question id: 14863

#Unit 6. System Physiology – Plant

Plant and fungal plasma membrane H+-ATPases and Ca2+-ATPases are members of a class known as P-type ATPases, which are phosphorylated as part of the catalytic cycle that hydrolyzes ATP. Because of this phosphorylation step, the plasma membrane ATPases are strongly inhibited by

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#Question id: 14864

#Unit 6. System Physiology – Plant

Which of the following statements of ATPase is INCORRECT?

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#Question id: 14899

#Unit 6. System Physiology – Plant

The energy required for active transport is often provided by the hydrolysis of ATP. In plants we can study the dependence of the membrane potential on ATP by observing the effect of cyanide (CN–), What wil be the effect of cyanide(Cn-),

a.) Cyanide rapidly poisons the mitochondria as ATP synthesis is inhibited, the membrane potential falls below -50mV

b.) Cyanide inhibits the electron transport but not inhibit the ATP synthesis, the membrane potential positive

 c.) Cyanide inhibits the electrogenic ion transport the pH of the external medium increases while the cytosol becomes acidic because H+ remains inside the cell

 d.) Cyanide inhibits the electrogenic ion transport the pH of the external medium acidic while the cytosol becomes alkaline because H+ remains outside of the cell

Which of the following statements regarding effect of cyanide is CORRECT?