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BSC1010 CH.6 ENERGY AND METABOLISM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
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BSC1010 CH.6 ENERGY AND METABOLISM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED aA + bB --> cC + dD A & B are reactants, C & D are the products, and a, b, c, & d are the number of moles of reactants and products. This reaction is reversible, which means that A + B could be co...

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  • September 22, 2024
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  • 2024/2025
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BSC1010 CH.6 ENERGY AND METABOLISM EXAM
QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED

aA + bB --> cC + dD


A & B are reactants, C & D are the products, and a, b, c, & d are the number of moles of reactants and

products. This reaction is reversible, which means that A + B could be converted to C + D, or C + D could

be converted to A + B. The direction of the reaction depends on energy and on the concentrations of A,

B, C, and D. The two general factors governing the fate of a given chemical reaction in a living cell are its

direction and rate.


Energy


Capacity to do work or promote change; requirement of cell's growth, reproduction, and response to its

environment


Kinetic energy


Energy of motion


Potential energy


Energy substance possesses due to its structure or location.


Thermodynamics (heat changes)


Study of energy

, Feedback inhibition


regulation of simple biochemical pathways often involves the end-product binding to the allosteric site

of the first enzyme in the sequence


Biochemical pathways


series of sequential chemical reactions which are maintained in the cell


Metabolism


Total of all chemical reactions carried out by organism; includes all endergonic and exergonic reactions


ATP drives endergonic reactions


Cleavage of ATP's terminal energy bond releases more energy that other reaction consumes, two

reaction can be coupled



- under standard conditions, ATP can release 7.3 Kcal of energy for every molecule converted to ADP


How ATP stores energy


Phosphate groups are highly negatively charged à repelling each other (coiled spring)



Unstable bonds holding phosphate together have low activation energy (easily broken)



Breaking (catabolism) à transfer ▲ energy from chemical bonds or electrons to energy stored in ATP



ATP à ADP + Pi


ATP

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