Chapter 8.3, Problem 5MI

Summary Introduction

To fill:

The table to compare the three stages of cellular respiration.

Introduction:

Cellular respiration is a catabolic process by which cells produce energy by oxidizing respiratory substrates such as glucose. It is a three-stage process which occurs in the cytoplasm and mitochondria of a cell. The first stage is the glycolysis or EMP pathway, the second stage is the Krebs cycle and the third is the electron transport chain.

Answer to Problem 5MI

Glycolysis	Krebs cycle	Electron transport
A series of chemical reactions that break down glucose into pyruvate.	A series of chemical reactions that break down pyruvate from glycolysis	ATP is made from high-energy electrons and protons released from NADH2and FADH2.
Takes place in: The cytoplasm of the cell	Takes place in: Mitochondrial matrix	Takes place in: Mitochondrial membrane
produces two ATP molecules for every glucose molecule that is broken down	Produces One ATP and two CO2	provides energy for ATP production final electron acceptor is Oxygen

Explanation of Solution

Cellular respiration is a catabolic process by which energy is produced by oxidation of the food in presence of oxygen. Cellular respiration is completed in three stages, first is glycolysis which occurs in the cytoplasm and second is Krebs cycle occurs in the mitochondrial matrix and third is electron transport system (ETS) occurs in the inner membrane of mitochondria. The end products of aerobic respiration are carbon dioxide and water and a high amount of energy (38ATP).  Aerobic respiration in multicellular organisms such as animals, plants, humans, etc.