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InterviewSolution
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Question : Answer question numbers (a) - (d) on the basis of yourunderstandingof thefollowing paragraph and the relatedstudied concepts :ATPis theenergy currencyfor mostcellular processes. Theenergy relased during the processof respiration is usedto makean ATPmoleculefromADP andinorganic phosphate.ADP +(P)overset("Energy")to ADP ~ (P)=ATP (P) : PhosphateEndothermic processesin the cell then use this ATPto drive the reactions. When terminalphosphate linkage in ATPis broken usingwater.The energy equivalentto 30.5 kJ/mol is released. Think of how a battery can provide energy for many differentkinds of uses. Itcan be usedto obtain mechanical energy , lightenergy, electrical energy and so on. Similarly, ATPcan be usedin thecells for the contraction of muscles, protein synthesis, conduction of nervous impulses andmany otheractivities.(a)How does ATP act as energy currencyof the cell ?(b) Whichis thesite of synthesisof ATP in a cell? (c)Isit same in prokaryotes and eukaryotes ?(d)From where is energy released duringrespiration ? |
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Answer» <P> Solution :(a)Thethird phosphate groupwhen DISSOCIATES from ATP, releaseslarge amountof energy.`(A) - P ~P` (b)It is mainlysynthesised in mitochondriahence, they are also called "Power house of the cell". (c)Inprokaryotes, ATP is synthesised in cytoplasm only while in eukaryotes its synthesised in cytoplasm aswell as inmitochondria. (d)Duringrespiration, energy is released mainly from breakdownof glucose. But in specialcircumstances, also frombreakdown of AMINO acids, fatty acidsand GLYCEROL. |
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