Question

chemical reaction breakdown or buildup? help please!!! thank you

CHEMICAL REACTION break down? or build up? catabolic or anabolic? energy released? or energy required? AG>O? or AG<0? spontaneous? or not spontaneous? reaction? - H H-C-OH нсон reaction?

Answer 1

Answer :

Reaction	breakdown or build up	catabolic/anabolic	Energy released or required	∆G>0 or ∆G<0	Spontaneous or non spontaneous
CHEMICAL REACTION	Breakdown	Catabolic	Energy released	∆G<0	Spontaneous
OM H-.-OH на H-C-OH	Build up	Anabolic	Energy required	∆G>0	Not spontaneous

Biochemical reactions can be broadly divided into two types :

• Anabolic reactions : Reactions in which smaller molecules come together to form a larger molecule are called anabolic reactions.
• Catabolic reactions are those in which a larger molecule is broken down into smaller molecules.

For a reaction to be spontaneous (occur at its own), energy should be released and thus ∆G would be negative.

∆G or gibbs free energy is the difference in energy of products and reactant,

i.e. ∆G=Energy of products - energy of reactants.

If energy of products is less than the reactant, then ∆G will be negative (∆G<0). However, if energy of products is higher then extra energy would be required to supply and ∆G>0. Such a reaction is not spontaneous (as it needs external energy supply) .

These two reactions can be compared as follows:

Anabolic reactions	Catabolic reactions
Involves condensation of smaller substrates into larger product ( i.e. simpler substance is converted into complex substance) . Build up reaction. Water (H2O) molecule is released as byproduct. Input of energy (ATP) is required, thus ∆G>0. Hence, reaction will be non-spontaneous.	Involves breakdown of a larger substrate into smaller constituents ( i.e. a complex substance is broken down into simpler substance) . Break down reaction. Water (H2O) molecule is consumed in the reaction. Energy is released, thus ∆G<0. Hence, reaction will be spontaneous.