Metabolism

Metabolism

All chemical reactions occurring in the cell, including breaking down (digesting) and building.

Catabolic reactions

Hydrolysis; a spontaneous reactions that break down molecules.

• high entropy, low potential energy

Anabolic reactions

Dehydration Synthesis; a non-spontaneous reactions that builds molecules up

• low entropy, high potential energy

What is true about Metabolic Reactions?

metabolic reactions are always coupled; anabolic reactions cannot happen without the energy input of catabolic reactions.

What is G when measuring enzyme activity?

The measure of free energy, which is the potential energy available to be use

What is an exothermic reaction categorized as?

Catabolic (spontaneous, hydrolysis, increase entropy, decrease potential energy)

What is an endothermic reaction categorized as?

Anabolic (non-spontaneous, dehydration synthesis, decreased entropy, increased potential energy)

Activation Energy

The input of energy needed to initiate a reaction in catabolic reactions in order for change to happen. Enzymes (catalysts) decrease activation energy to increase the rate of reaction

What is true about enzymes?

Enzymes are always specific to a particular substrate due to its active site, as it is compatible to its shape, polarity, and charge.