Concept 9.6: Glycolysis and the citric acid cycle connect to many other metabolic pathways

Flashcards from Concept 9.6 of Pearson's Campbell Biology, Twelfth Edition.

Catabolic pathways

Chains of catabolic reactions that funnel electrons from many kinds of organic molecules into cellular respiration

• Seen in glycolysis’ use of many carbohydrates

Deamination

The digestion of proteins used for fuel by breaking them down into their amino acid groups

• Nitrogenous waste is excreted as ammonia (NH₃), urea, or other products

Nitrogenous waste

Produced as proteins are digested to amino acid groups in the forms of ammonia (NH₃), urea, or other products

Glycerol

The substance fats are digested to for glycolysis, broken down in a process known as beta oxidation that produces twice as much ATP as the same mass of carbohydrates

Anabolic pathways

Chains of anabolic reactions to build macromolecules from small molecules in food or from cellular respiration

• Seen in protein synthesis from amino acid

Feedback inhibition

The most common mechanism for metabolic control that dictates the level of energy production based on need

• Higher ATP demands leads to more respiration

• Controlls catabolism by regulating enzymatic activity at strategic points in the pathway