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Campbell Essential Biology with Physiology, Global Edition

Campbell Essential Biology with Physiology, Global Edition

Eric J. Simon | Jean L. Dickey | Jane B. Reece | Kelly A. Hogan

(2015)

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Book Details

Abstract

For non-majors/mixed biology courses.

 

Helping students understand why biology matters 

Campbell Essential Biology with Physiology makes biology interesting and understandable for non-majors biology students. This best-selling textbook, known for its scientific accuracy, clear explanations, and intuitive illustrations, has been revised to further emphasize the relevance of biology to everyday life, using memorable analogies, real-world examples, conversational language, engaging new Why Biology Matters photo essays, and more.

 

MasteringBiology not included. Students, if MasteringBiology is a recommended/mandatory component of the course, please ask your instructor for the correct ISBN and course ID. MasteringBiology should only be purchased when required by an instructor. Instructors, contact your Pearson representative for more information.

 

MasteringBiology is an online homework, tutorial, and assessment product that improves results by helping students quickly master concepts. Students benefit from self-paced tutorials that feature immediate wrong-answer feedback and hints that emulate the office-hour experience to help keep students on track. With a wide range of interactive, engaging, and assignable activities, many of them contributed by Essential Biology authors, students are encouraged to actively learn and retain tough course concepts. New MasteringBiology activities for this edition include “Essential Biology” videos that help students efficiently review key topics outside of class, “Evaluating Science in the Media” activities that help students to build science literacy skills, and “Scientific Thinking” coaching activities that guide students in understanding the scientific method.

 

Table of Contents

Section Title Page Action Price
Campbell Essential Biology with Physiology CVR
Brief Contents IFC
Title Page 1
Copyright 2
About the Authors 3
Detailed Contents 4
Preface 27
Acknowledgments 29
1: Introduction: Biology Today 36
BIOLOGY AND SOCIETY: An Innate Passion for Life 37
The Scientific Study of Life 38
The Process of Science 38
Discovery Science 38
Hypothesis-Driven Science 39
Theories in Science 41
The Nature of Life 41
The Properties of Life 41
Life in Its Diverse Forms 42
Major Themes in Biology 44
Evolution: Evolution 44
Structure/Function: The Relationship of Structure to Function 48
Information Flow: Information Flow 48
Energy Transformations: Pathways that Transform Energy and Matter 49
Interconnections within Systems: Interconnections within Biological Systems 50
Chapter Review 52
UNIT 1: Cells 55
2: Essential Chemistry for Biology 56
CHAPTER THREAD: Radioactivity 57
BIOLOGY AND SOCIETY: Radiation and Health 57
Some Basic Chemistry 58
Matter: Elements and Compounds 58
Atoms 59
THE PROCESS OF SCIENCE: Can Radioactive Tracers Identify Brain Diseases? 60
Chemical Bonding and Molecules 61
Chemical Reactions 62
Water and Life 63
Structure/Function: Water 63
Acids, Bases, and pH 65
EVOLUTION CONNECTION: Radioactivity as an Evolutionary Clock 67
Chapter Review 68
3: The Molecules of Life 70
CHAPTER THREAD: Lactose Intolerance 71
BIOLOGY AND SOCIETY: Got Lactose? 71
Organic Compounds 72
Carbon Chemistry 72
Giant Molecules from Smaller Building Blocks 73
Large Biological Molecules 74
Carbohydrates 74
Lipids 77
Proteins 80
Structure/Function: Protein Shape 81
Nucleic Acids 83
THE PROCESS OF SCIENCE: Does Lactose Intolerance Have a Genetic Basis? 85
EVOLUTION CONNECTION: The Evolution of Lactose Intolerance in Humans 85
Chapter Review 86
4: A Tour of the Cell 88
CHAPTER THREAD: Humans Versus Bacteria 89
BIOLOGY AND SOCIETY: Antibiotics: Drugs That Target Bacterial Cells 89
The Microscopic World of Cells 90
The Two Major Categories of Cells 91
An Overview of Eukaryotic Cells 92
Membrane Structure 94
Structure/Function: The Plasma Membrane 94
THE PROCESS OF SCIENCE: What Makes a Superbug? 95
Cell Surfaces 95
The Nucleus and Ribosomes: Genetic Control of the Cell 96
The Nucleus 96
Ribosomes 97
How DNA Directs Protein Production 97
The Endomembrane System: Manufacturing and Distributing Cellular Products 98
The Endoplasmic Reticulum 98
The Golgi Apparatus 99
Lysosomes 100
Vacuoles 101
Energy Transformations: Chloroplasts and Mitochondria 102
Chloroplasts 102
Mitochondria 102
The Cytoskeleton: Cell Shape and Movement 103
Maintaining Cell Shape 103
Cilia and Flagella 104
EVOLUTION CONNECTION: The Evolution of Bacterial Resistance in Humans 105
Chapter Review 106
5: The Working Cell 108
CHAPTER THREAD: Nanotechnology 109
BIOLOGY AND SOCIETY: Harnessing Cellular Structures 109
Some Basic Energy Concepts 110
Conservation of Energy 110
Heat 111
Chemical Energy 111
Food Calories 112
Energy Transformations: ATP and Cellular Work 113
The Structure of ATP 113
Phosphate Transfer 113
The ATP Cycle 114
Enzymes 114
Activation Energy 114
THE PROCESS OF SCIENCE: Can Enzymes Be Engineered? 115
Structure/Function: Enzyme Activity 116
Enzyme Inhibitors 116
Membrane Function 117
Passive Transport: Diffusion across Membranes 117
Osmosis and Water Balance 118
Active Transport: The Pumping of Molecules across Membranes 120
Exocytosis and Endocytosis: Traffic of Large Molecules 120
EVOLUTION CONNECTION: The Origin of Membranes 121
Chapter Review 121
6: Cellular Respiration: Obtaining Energy from Food 124
CHAPTER THREAD: Exercise Science 124
BIOLOGY AND SOCIETY: Getting the most out of your muscles 124
Energy Flow and Chemical Cycling in the Biosphere 126
Producers and Consumers 126
Chemical Cycling between Photosynthesis and Cellular Respiration 126
Cellular Respiration: Aerobic Harvest of Food Energy 128
Energy Transformations: An Overview of Cellular Respiration 128
The Three Stages of Cellular Respiration 130
The Results of Cellular Respiration 134
Fermentation: Anaerobic Harvest of Food Energy 135
Fermentation in Human Muscle Cells 135
THE PROCESS OF SCIENCE: What Causes Muscle Burn? 136
Fermentation in Microorganisms 136
EVOLUTION CONNECTION: The Importance of Oxygen 137
Chapter Review 138
7: Photosynthesis: Using Light to Make Food 140
CHAPTER THREAD: Biofuels 141
BIOLOGY AND SOCIETY: A Greasy Crime Wave 141
The Basics of Photosynthesis 142
Chloroplasts: Sites of Photosynthesis 142
Energy Transformations: An Overview of Photosynthesis 143
The Light Reactions: Converting Solar Energy to Chemical Energy 144
The Nature of Sunlight 144
THE PROCESS OF SCIENCE: What Colors of Light Drive Photosynthesis? 145
What Colors of Light Drive Photosynthesis? 145
Chloroplast Pigments 145
How Photosystems Harvest Light Energy 146
How the Light Reactions Generate ATP and NADPH 147
The Calvin Cycle: Making Sugar from Carbon Dioxide 149
EVOLUTION CONNECTION: Creating a Better Biofuel Factory 149
Chapter Review 150
UNIT 2: Genetics 153
8: Cellular Reproduction: Cells from Cells 154
CHAPTER THREAD: Life with and without Sex 155
BIOLOGY AND SOCIETY: Virgin Birth of a Dragon 155
What Cell Reproduction Accomplishes 156
The Cell Cycle and Mitosis 157
Eukaryotic Chromosomes 157
Information Flow: Duplicating Chromosomes 159
The Cell Cycle 159
Mitosis and Cytokinesis 160
Cancer Cells: Dividing Out of Control 162
Meiosis, the Basis of Sexual Reproduction 164
Homologous Chromosomes 164
Gametes and the Life Cycle of a Sexual Organism 165
The Process of Meiosis 166
Review: Comparing Mitosis and Meiosis 168
The Origins of Genetic Variation 169
THE PROCESS OF SCIENCE: Do All Animals Have Sex? 171
When Meiosis Goes Awry 172
EVOLUTION CONNECTION: The Advantages of Sex 174
Chapter Review 175
9: Patterns of Inheritance 178
CHAPTER THREAD: Dog Breeding 179
BIOLOGY AND SOCIETY: Our Longest-Running Genetic Experiment 179
Genetics and Heredity 180
In an Abbey Garden 180
Mendel’s Law of Segregation 181
Mendel’s Law of Independent Assortment 184
Using a Testcross to Determine an Unknown Genotype 186
The Rules of Probability 186
Family Pedigrees 187
Human Disorders Controlled by a Single Gene 188
THE PROCESS OF SCIENCE: What Is the Genetic Basis of Coat Variation in Dogs? 190
Variations on Mendel’s Laws 192
Incomplete Dominance in Plants and People 192
ABO Blood Groups: An Example of Multiple Alleles and Codominance 193
Structure/Function: Pleiotropy and Sickle-Cell Disease 194
Polygenic Inheritance 194
Epigenetics and the Role of Environment 195
The Chromosomal Basis of Inheritance 196
Linked Genes 196
Sex Determination in Humans 197
Sex-Linked Genes 197
EVOLUTION CONNECTION: Barking Up the Evolutionary Tree 199
Chapter Review 200
10: The Structure and Function of DNA 204
CHAPTER THREAD: The Deadliest Virus 205
BIOLOGY AND SOCIETY: The First 21st-Century Pandemic 205
DNA: Structure and Replication 206
DNA and RNA Structure 206
Watson and Crick’s Discovery of the Double Helix 207
Structure/Function: DNA Replication 209
Information Flow: From DNA to RNA to Protein 210
How an Organism’s Genotype Determines Its Phenotype 210
From Nucleotides to Amino Acids: An Overview 211
The Genetic Code 212
Transcription: From DNA to RNA 213
The Processing of Eukaryotic RNA 214
Translation: The Players 214
Translation: The Process 216
Review: DNA ? RNA ? Protein 217
Mutations 218
Viruses and Other Noncellular Infectious Agents 220
Bacteriophages 220
Plant Viruses 222
Animal Viruses 222
THE PROCESS OF SCIENCE: Do Flu Vaccines Protect the Elderly? 224
HIV, the AIDS Virus 224
Viroids and Prions 226
EVOLUTION CONNECTION: Emerging Viruses 226
Chapter Review 227
11: How Genes Are Controlled 230
CHAPTER THREAD: Cancer 231
BIOLOGY AND SOCIETY: Tobacco’s Smoking Gun 231
How and Why Genes Are Regulated 232
Gene Regulation in Bacteria 232
Gene Regulation in Eukaryotic Cells 234
Information Flow: Cell Signaling 237
Homeotic Genes 237
DNA Microarrays: Visualizing Gene Expression 238
Cloning Plants and Animals 239
The Genetic Potential of Cells 239
Reproductive Cloning of Animals 240
Therapeutic Cloning and Stem Cells 242
The Genetic Basis of Cancer 243
Genes That Cause Cancer 243
THE PROCESS OF SCIENCE: Are Childhood Tumors Different? 244
Cancer Risk and Prevention 246
EVOLUTION CONNECTION: The Evolution of Cancer in the Body 247
Chapter Review 247
12: DNA Technology 250
CHAPTER THREAD: DNA Profiling 251
BIOLOGY AND SOCIETY: Using DNA to Establish Guilt and Innocence 251
Genetic Engineering 252
Recombinant DNA Techniques 252
Pharmaceutical Applications 255
Genetically Modified Organisms in Agriculture 256
Human Gene Therapy 258
DNA Profiling and Forensic Science 259
DNA Profiling Techniques 259
Investigating Murder, Paternity, and Ancient DNA 262
Bioinformatics 263
DNA Sequencing 263
Genomics 263
Genome-Mapping Techniques 264
The Human Genome 264
THE PROCESS OF SCIENCE: Can Genomics Cure Cancer? 266
Applied Genomics 266
Interconnections within Systems: Systems Biology 267
Safety and Ethical Issues 268
The Controversy over Genetically Modified Foods 269
Ethical Questions Raised by Human DNA Technologies 270
EVOLUTION CONNECTION: The Y Chromosome as a Window on History 271
Chapter Review 272
UNIT 3: Evolution and Diversity 275
13: How Populations Evolve 276
CHAPTER THREAD: Evolution Past, Present, and Future 277
BIOLOGY AND SOCIETY: Evolution Today 277
The Diversity of Life 278
Naming and Classifying the Diversity of Life 278
Explaining the Diversity of Life 279
Charles Darwin and The Origin of Species 280
Darwin’s Journey 280
Evolution: Darwin’s Theory 282
Evidence of Evolution 282
Evidence from Fossils 282
THE PROCESS OF SCIENCE: Did Whales Evolve from Land-Dwelling Mammals? 284
Evidence from Homologies 284
Evolutionary Trees 286
Natural Selection as the Mechanism for Evolution 287
Natural Selection in Action 288
Key Points about Natural Selection 289
The Evolution of Populations 289
Sources of Genetic Variation 289
Populations as the Units of Evolution 291
Analyzing Gene Pools 292
Population Genetics and Health Science 293
Microevolution as Change in a Gene Pool 293
Mechanisms That Alter Allele Frequencies in a Population 293
Genetic Drift 293
Gene Flow 296
Natural Selection: A Closer Look 296
EVOLUTION CONNECTION: The Rising Threat of Antibiotic Resistance 298
Chapter Review 299
14: How Biological Diversity Evolves 302
CHAPTER THREAD: Mass Extinctions 303
BIOLOGY AND SOCIETY: The Sixth Mass Extinction 303
The Origin of Species 304
What Is a Species? 305
Reproductive Barriers between Species 306
Evolution: Mechanisms of Speciation 308
Earth History and Macroevolution 312
The Fossil Record 312
Plate Tectonics and Biogeography 314
Mass Extinctions and Explosive Diversifications of Life 316
THE PROCESS OF SCIENCE: Did a Meteor Kill the Dinosaurs? 316
Mechanisms of Macroevolution 317
Large Effects from Small Genetic Changes 317
The Evolution of Biological Novelty 318
Classifying the Diversity of Life 320
Classification and Phylogeny 320
Classification: A Work in Progress 322
EVOLUTION CONNECTION: Rise of the Mammals 323
Chapter Review 324
15: The Evolution of Microbial Life 326
CHAPTER THREAD: Human Microbiota 327
BIOLOGY AND SOCIETY: Our Invisible Inhabitants 327
Major Episodes in the History of Life 328
The Origin of Life 330
A Four-Stage Hypothesis for the Origin of Life 330
From Chemical Evolution to Darwinian Evolution 332
Prokaryotes 333
They’re Everywhere! 333
Structure/Function: Prokaryotes 334
The Ecological Impact of Prokaryotes 337
The Two Main Branches of Prokaryotic Evolution: Bacteria and Archaea 338
THE PROCESS OF SCIENCE: Are Intestinal Microbiota to Blame for Obesity? 340
Protists 341
Protozoans 342
Slime Molds 343
Unicellular and Colonial Algae 344
Seaweeds 344
EVOLUTION CONNECTION: The Sweet Life of Streptococcus mutans 345
Chapter Review 346
16: The Evolution of Plants and Fungi 348
CHAPTER THREAD: Plant-Fungus Interactions 349
BIOLOGY AND SOCIETY: The Diamond of the Kitchen 349
Colonizing Land 350
Terrestrial Adaptations of Plants 350
The Origin of Plants from Green Algae 352
Plant Diversity 352
Highlights of Plant Evolution 352
Bryophytes 353
Ferns 355
Gymnosperms 356
Angiosperms 358
Plant Diversity as a Nonrenewable Resource 361
Fungi 362
Structure/Function: Characteristics of Fungi 363
The Ecological Impact of Fungi 364
THE PROCESS OF SCIENCE: Did a Fungus Lead to the Salem Witch Hunt? 365
Commercial Uses of Fungi 365
EVOLUTION CONNECTION: A Mutually Beneficial Symbiosis 366
Chapter Review 367
17: The Evolution of Animals 370
CHAPTER THREAD: Human Evolution 371
BIOLOGY AND SOCIETY: The Discovery of the Hobbit People 371
The Origins of Animal Diversity 372
What Is an Animal? 372
Early Animals and the Cambrian Explosion 373
Evolution: Animal Phylogeny 374
Major Invertebrate Phyla 375
Sponges 375
Cnidarians 376
Molluscs 377
Flatworms 378
Annelids 379
Roundworms 380
Arthropods 381
Echinoderms 387
Vertebrate Evolution and Diversity 388
Characteristics of Chordates 388
Fishes 390
Amphibians 391
Reptiles 392
Mammals 394
The Human Ancestry 395
The Evolution of Primates 395
The Emergence of Humankind 397
THE PROCESS OF SCIENCE: Who Were the Hobbit People? 399
EVOLUTION CONNECTION: Are We Still Evolving? 401
Chapter Review 402
UNIT 4: Ecology 405
18: An Introduction to Ecology and the Biosphere 406
CHAPTER THREAD: Global Climate Change 407
BIOLOGY AND SOCIETY: Penguins, Polar Bears, and People in Peril 407
An Overview of Ecology 408
Ecology and Environmentalism 408
Interconnections of Systems: A Hierarchy of Interactions 409
Living in Earth’s Diverse Environments 410
Abiotic Factors of the Biosphere 410
Energy Source 410
The Evolutionary Adaptations of Organisms 412
Adjusting to Environmental Variability 412
Biomes 414
Freshwater Biomes 414
Marine Biomes 416
How Climate Affects Terrestrial Biome Distribution 418
Terrestrial Biomes 419
Interconnections within Systems: The Water Cycle 425
Human Impact on Biomes 426
Forests 426
Global Climate Change 428
The Greenhouse Effect and Global Warming 428
The Accumulation of Greenhouse Gases 429
THE PROCESS OF SCIENCE: How Does Climate Change Affect Species Distribution? 430
Effects of Climate Change on Ecosystems 431
Looking to Our Future 432
EVOLUTION CONNECTION: Climate Change as an Agent of Natural Selection 433
Chapter Review 433
19: Population Ecology 436
CHAPTER THREAD: Biological Invasions 437
BIOLOGY AND SOCIETY: Invasion of the Lionfish 437
An Overview of Population Ecology 438
Population Density 439
Population Age Structure 439
Life Tables and Survivorship Curves 440
Evolution: Life History Traits as Adaptations 440
Population Growth Models 442
The Exponential Population Growth Model: The Ideal of an Unlimited Environment 442
The Logistic Population Growth Model: The Reality of a Limited Environment 443
Regulation of Population Growth 444
Applications of Population Ecology 446
Conservation of Endangered Species 446
Sustainable Resource Management 446
Invasive Species 447
Biological Control of Pests 448
THE PROCESS OF SCIENCE: Can Biological Control Defeat Kudzu? 449
Integrated Pest Management 450
Human Population Growth 451
The History of Human Population Growth 451
Age Structures 452
Our Ecological Footprint 453
EVOLUTION CONNECTION: Humans as an Invasive Species 455
Chapter Review 455
20: Communities and Ecosystems 458
CHAPTER THREAD: Biodiversity in Decline 459
BIOLOGY AND SOCIETY: Why Biodiversity Matters 459
The Loss of Biodiversity 460
Genetic Diversity 460
Species Diversity 460
Ecosystem Diversity 461
Causes of Declining Biodiversity 461
Community Ecology 462
Interspecific Interactions 462
Trophic Structure 466
Species Diversity in Communities 469
Disturbances in Communities 470
Ecological Succession 470
Ecosystem Ecology 471
Energy Transformations: Energy Flow in Ecosystems 472
Interconnections within Systems: Chemical Cycling in Ecosystems 474
Conservation and Restoration Biology 478
Biodiversity “Hot Spots” 478
Conservation at the Ecosystem Level 479
THE PROCESS OF SCIENCE: How Does Tropical Forest Fragmentation Affect Biodiversity? 480
Restoring Ecosystems 481
The Goal of Sustainable Development 482
EVOLUTION CONNECTION: Can Biophilia Save Biodiversity? 483
Chapter Review 484
UNIT 5: Animal Structure and Function 487
21: Unifying Concepts of Animal Structure and Function 488
CHAPTER THREAD: Controlling Body Temperature 489
BIOLOGY AND SOCIETY: An Avoidable Tragedy 489
The Structural Organization of Animals 490
Structure/Function: Anatomy and Physiology 491
Tissues 491
Interconnections within Systems: Organs and Organ Systems 495
Exchanges with the External Environment 498
Regulating the Internal Environment 499
Homeostasis 499
Negative and Positive Feedback 500
Thermoregulation 501
THE PROCESS OF SCIENCE: How Does a Python Warm Her Eggs? 502
Osmoregulation 502
Interconnections within Systems: Homeostasis in the Urinary System 503
EVOLUTION CONNECTION: Adaptations for Thermoregulation 505
Chapter Review 506
22: Nutrition and Digestion 508
CHAPTER THREAD: Controlling Your Weight 509
BIOLOGY AND SOCIETY: The “Secret” to Shedding Pounds 509
An Overview of Animal Nutrition 510
Animal Diets 510
The Four Stages of Food Processing 510
Digestive Compartments 512
A Tour of the Human Digestive System 513
System Map 513
The Mouth 513
The Pharynx 514
The Esophagus 514
The Stomach 514
The Small Intestine 516
The Large Intestine 518
Human Nutritional Requirements 519
Energy Transformations: Food as Fuel 519
Food as Building Material 520
Decoding Food Labels 522
Nutritional Disorders 523
Malnutrition 523
Eating Disorders 523
Obesity 524
THE PROCESS OF SCIENCE: Can a Gene Make You Fat? 524
EVOLUTION CONNECTION: Fat and Sugar Cravings 525
Chapter Review 526
23: Circulation and Respiration 528
CHAPTER THREAD: Athletic Endurance 529
BIOLOGY AND SOCIETY: Avoiding “The Wall” 529
Unifying Concepts of Animal Circulation 530
The Human Cardiovascular System 532
The Path of Blood 532
How the Heart Works 533
Blood Vessels 534
Blood 537
THE PROCESS OF SCIENCE: Live High, Train Low? 538
Cardiovascular Disease 540
Unifying Concepts of Animal Respiration 541
The Human Respiratory System 543
The Path of Air 544
Information Flow: The Brain’s Control over Breathing 545
The Role of Hemoglobin in Gas Transport 546
Smoking Damages the Structure and Function of the Lungs 547
EVOLUTION CONNECTION: Evolving Endurance 547
Chapter Review 548
24: The Body’s Defenses 550
CHAPTER THREAD: Vaccines 551
BIOLOGY AND SOCIETY: Herd Immunity 551
An Overview of the Immune System 552
Innate Immunity 553
External Innate Defenses 553
Internal Innate Defenses 553
The Lymphatic System 554
Circulatory Function 555
Immune Function 555
Adaptive Immunity 556
Step 1: Recognizing the Invaders 556
Step 2: Cloning the Responders 557
Step 3: Responding to Invaders 558
Step 4: Remembering Invaders 560
THE PROCESS OF SCIENCE: How Do We Know Vaccines Work? 561
Immune Disorders 561
Allergies 561
Autoimmune Diseases 563
Immunodeficiency Diseases 563
AIDS 563
EVOLUTION CONNECTION: Viral Evolution versus the Flu Vaccine 564
Chapter Review 565
25: Hormones 568
CHAPTER THREAD: Steroid Abuse 569
BIOLOGY AND SOCIETY: Should Steroids Be Allowed in Sports? 569
Hormones: An Overview 570
The Human Endocrine System 571
Information Flow: The Hypothalamus and Pituitary Gland 572
The Thyroid Regulates Metabolism and Development 574
The Pancreas Regulates Blood Glucose 575
The Adrenal Glands Respond to Stress 577
The Gonads Produce Sex Hormones 579
Structure/Function: Mimicking Sex Hormones 579
THE PROCESS OF SCIENCE: Do ‘Roids Cause Rage? 580
EVOLUTION CONNECTION: Steroids and Male Aggression 581
Chapter Review 582
26: Reproduction and Development 584
CHAPTER THREAD: High-Tech Babies 585
BIOLOGY AND SOCIETY: New Ways of Making Babies 585
Unifying Concepts of Animal Reproduction 586
Asexual Reproduction 586
Sexual Reproduction 587
Human Reproduction 588
Male Reproductive Anatomy 588
Female Reproductive Anatomy 589
Gametogenesis 590
The Female Reproductive Cycle 592
Reproductive Health 593
Contraception 593
Sexually Transmitted Diseases 594
Human Development 596
Structure/Function: Fertilization by Sperm 596
Basic Concepts of Embryonic Development 597
Pregnancy and Early Development 598
The Stages of Pregnancy 600
Childbirth 602
Reproductive Technologies 602
Infertility 602
In Vitro Fertilization 603
THE PROCESS OF SCIENCE: Are Babies Conceived via In Vitro Fertilization as Healthy as Babies Conceived Naturally? 603
The Ethics of IVF 604
EVOLUTION CONNECTION: The “Grandmother Hypothesis” 604
Chapter Review 605
27: Nervous, Sensory, and Locomotor Systems 608
CHAPTER THREAD: Extrahuman Senses 609
BIOLOGY AND SOCIETY: The Seismic Sense of Elephants 609
An Overview of Animal Nervous Systems 610
Neurons 610
Organization of Nervous Systems 610
Sending a Signal through a Neuron 611
Passing a Signal from a Neuron to a Receiving Cell 613
The Human Nervous System: A Closer Look 615
The Central Nervous System 615
The Peripheral Nervous System 616
The Human Brain 617
The Senses 621
Sensory Input 621
Vision 622
Lighting the Retina 623
Hearing 626
Locomotor Systems 627
The Skeletal System 628
The Muscular System 630
THE PROCESS OF SCIENCE: How Do New Senses Arise? 632
Stimulus and Response: Putting It All Together 633
EVOLUTION CONNECTION: Seeing UV 633
Chapter Review 634
UNIT 6: Plant Structure and Function 637
28: The Life of a Flowering Plant 638
CHAPTER THREAD: Agriculture 639
BIOLOGY AND SOCIETY: The Buzz on Coffee Plants 639
The Structure and Function of a Flowering Plant 640
Monocots and Eudicots 640
Structure/Function: Roots, Stems, and Leaves 641
Plant Tissues and Tissue Systems 644
Plant Cells 645
Plant Growth 647
Primary Growth: Lengthening 647
Secondary Growth: Thickening 648
THE PROCESS OF SCIENCE: What Happened to the Lost Colony of Roanoke? 650
What Happened to the Lost Colony of Roanoke? 650
The Life Cycle of a Flowering Plant 651
The Flower 651
Overview of the Flowering Plant Life Cycle 652
Pollination and Fertilization 652
Seed Formation 653
Fruit Formation 654
Seed Germination 654
EVOLUTION CONNECTION: The Problem of the Disappearing Bees 655
Chapter Review 655
29: The Working Plant 658
CHAPTER THREAD: The Interdependence of Organisms 659
BIOLOGY AND SOCIETY: Planting Hope in the Wake of Disaster 659
How Plants Acquire and Transport Nutrients 660
Plant Nutrition 660
From the Soil into the Roots 662
Energy Transformations: The Role of Bacteria in Nitrogen Nutrition 662
The Transport of Water 663
The Transport of Sugars 664
Plant Hormones 666
Auxins 666
THE PROCESS OF SCIENCE: Do Chemical Signals Affect Plant Growth? 667
Ethylene 668
Cytokinins 668
Gibberellins 669
Abscisic Acid 669
Response to Stimuli 670
Tropisms 670
Photoperiod 670
EVOLUTION CONNECTION: Plants, Bugs, and People 671
Chapter Review 672
Appendix A: Metric Conversion Table 675
Appendix B: The Periodic Table 677
Appendix C: Credits 679
Appendix D: Self-Quiz Answers 685
Glossary 691
Index 715