What is the benefit of substrate channeling? the pdh active site forms in the hydrophobic core of the complex instead of a surface‑exposed region. reaction intermediates move to sequential active sites faster than the diffusion constant. every intermediate or product made by the pdh complex enters the citric acid cycle as a substrate. the pdh complex sequesters excess substrate to use at later time. intermediates of a multistep reaction sequence do not dissociate from the enzyme complex.

14 days is the half-life of phosphorus-32

b.

the accuracy of the data.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.