After running 1.5 kilometers, you stop and breathe heavily for a short period due to oxygen debt. Why do you need to breathe so heavily? (Hint: Look up “oxygen debt” on the Web. Which metabolic pathway requires oxygen?)

After running 1.5 kilometers, you stop and breathe heavily for a short period due to oxygen debt. Why do you need to breathe so heavily? (Hint: Look up “oxygen debt” on the Web. Which metabolic pathway requires oxygen?)

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter10: The Respiratory System

Section: Chapter Questions

Problem 2RQ: What is the difference between respiration and aerobic cellular respiration?

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Concept explainers

Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.

Question

Chemical pathways by which living things function, especially those that provide cellular energy, such as the transformation of energy from food into the energy of ATP. Metabolism also focuses on chemical pathways involving the synthesis of new biomolecules and the elimination of waste.

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