Life: The Science of Biology

Life: The Science of Biology

Language: English

Pages: 1267

ISBN: 1429298642

Format: PDF / Kindle (mobi) / ePub


From its first edition, Life has set the standard for experiment-based introductory biology texts. There is no stronger textbook for helping students understand not just what we know (scientific facts), but how we know it (the experimental process that leads to their discovery).
 
The new edition of Life builds upon this tradition, teaching fundamental concepts and showcasing significant research while responding to changes in biology education...

• PEDAGOGICALLY, with features that match the way students learn today, including chapter opening stories, art with balloon captions, and new Learning Objectives

 SCIENTIFICALLY, with a wealth of important new research throughout (see Table of Contents for highlights)

• TECHNOLOGICALLY, with instant access QR codes printed in the text, new interactive features (media clips, chapter summaries, a flashcard app), and a dramatically enhanced BioPortal, with the adaptive quizzing system, LearningCurve

• QUANTIFIABLY, with completely revised assessment resources and new ways of measuring students' progress

Also avalable, Volume Splits:—paperbound in full color!
Volume 1: The Cell and Heredity (Chapters 1-20)
Volume 2: Evolution, Diversity, and Ecology (Chapters 1, 21-33, 54-59)
Volume 3: Plants and Animals (Chapters 1, 34-53)

See what's in the LaunchPad

Handbook of Physics in Medicine and Biology

Cats' Paws and Catapults: Mechanical Worlds of Nature and People

Synthetic Messenger RNA and Cell Metabolism Modulation: Methods and Protocols

The Biology of Cancer

Human Evolution: A Pelican Introduction

Principles of Plant Genetics and Breeding (2nd Edition)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

two double bonds • Linolenic: C18, three double bonds The saturated fatty acid chains allow close packing of fatty acids in the bilayer, while the “kinks” in unsaturated fatty acids (see Figure 3.19) make for a less dense, more fluid packing. These less-dense membranes in animal cells can accommodate cholesterol molecules. Up to 25 percent of the lipid content of an animal cell plasma membrane may be cholesterol. When present, cholesterol is important for membrane integrity; the cholesterol in

Section 8.4). In some tissues, metabolic cooperation is needed so that signals and metabolic products can be passed from cells at the edges of tissues to cells in the interior and vice versa. It is not clear how important this function is in many tissues, but it is known to be vital in some. For example, in the lens of the mammalian eye only the cells at the periphery are close enough to the blood supply to allow diffusion of nutrients and wastes. But because lens cells are connected by large

enzyme lactase in their small intestines. When they consume dairy products, these people have ill effects. CHAPTER OUTLINE 8.1 What Physical Principles Underlie Biological Energy Transformations? 8.2 What Is the Role of ATP in Biochemical Energetics? 8.3 What Are Enzymes? 8.4 How Do Enzymes Work? 8.5 How Are Enzyme Activities Regulated? Physical Principles Underlie 8.1 What Biological Energy Transformations? Maasai Herders The Maasai are unusual among Africans in that they consume milk

people began to keep grazing animals and to use their milk. Lactase activity is an example of an enzyme-catalyzed biochemical transformation. The hydrolysis of lactose is the beginning of its transformation to simpler molecules—ultimately CO2—and this transformation releases energy. IN THIS CHAPTER we begin our study of biochemical transformations, focusing on the role of energy. We first describe the physical principles that underlie energy transformations and how these principles apply to

from a fragment of the meteorite that landed in Australia in 1969 were put into test tubes with water. Soluble molecules present in the rock, including amino acids, nucleotide bases, and sugars, dissolved in the water. Plastic gloves and sterile instruments were used to reduce the possibility of contamination with substances from Earth. test tubes and extracted them in water (Figure 4.8). They found a number of the molecules that are unique to life, including purines, pyrimidines, sugars, and

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