SaplingPlus for Lehninger Principles of Biochemistry (Six-Month Access)
SaplingPlus for Lehninger Principles of Biochemistry (Six-Month Access)
7th Edition
ISBN: 9781319108236
Author: David L. Nelson, Michael M. Cox
Publisher: W. H. Freeman
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Chapter 17, Problem 2P

(a)

Summary Introduction

To determine: The total available fuel reserve in both kilojoules and kilocalories in the form of triacylglycerols if 15% of the body mass of 70 kg adult consists of triacylglycerols.

Introduction:

The most common form of lipid present in diet is a fat called triglycerides. Triglyceride or triacylglycerols is made up of three molecules of fatty acid and one glycerol molecule. The fat or triglycerides contains chemical energy which is released by the hydrolysis or breaking down of fats into fatty acid and glycerol molecules. Beta oxidation decomposes the fatty acid into two carbon atom molecule that helps in the release of energy.

(b)

Summary Introduction

To determine: The number of days a person could survive if the oxidation of fatty acids stored as triacylglycerols are the only source of energy.

Introduction:

The fat or triglycerides contains chemical energy which is released by the hydrolysis or breaking down of fats into fatty acid and glycerol molecules. Beta oxidation decomposes the fatty acid into two carbon atom molecule that helps in the release of energy.

(c)

Summary Introduction

To determine: The value of weight loss in pounds per day under starvation.

Introduction:

The fat or triglycerides contains chemical energy which is released by the hydrolysis or breaking down of fats into fatty acid and glycerol molecules. Beta oxidation decomposes the fatty acid into two carbon atom molecule that helps in the release of energy.

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Researchers isolated an unknown substance, X, from rabbit muscle. They determined its structure from the following observations and experiments. (a) Qualitative analysis showed that X was composed entirely of C, H, and O. A weighed sample of X was completely oxidized and the H2O and CO2 produced were measured. This quantitative analysis revealed that X contained 40.00% C, 6.71% H, and 53.29% O by weight. (b) The molecular mass of X, as determined by mass spectrometry, was 90.00 atomic mass units (u). (c) Infrared spectroscopy showed that X contained one double bond. (d) X dissolved readily in water, and the solution demonstrated optical activity when tested in a polarimeter. (e) The aqueous solution of X is acidic. What is the empirical formula of X?
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Biochemistry What is the process of "transamination" in either the muscles or the liver, that involves keto acid or glutamic acid? Please explain how the steps work. Thank you!
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