Essentials Of Biology

Description:

Essentials of Biology, is designed to provide students who are not majoring in science with a fundamental understanding of the science of biology. Even though these students are not scientists, an understanding of how science can help identify, analyze, and offer solutions to the many challenges facing human society is critical to our species’ health and survival.

Preface

Essentials of Biology, 7e is designed to provide students who are not majoring in science with a fundamental understanding of the science of biology. Even though these students are not scientists, an understanding of how science can help identify, analyze, and offer solutions to the many challenges facing human society is critical to our species’ health and survival.

As we have all learned within the past few years, the challenges facing us, from climate change to the COVID-19 pandemic, are demanding that we as a society not only become more scientifically literate but also understand and appreciate the importance of the process of scientific thought and the roles of scientists in our culture.

The front cover of this text was chosen to indicate the wonders of biology and the excitement of scientific discovery. The white storks of Portugal, which are not marine birds, are shown here nesting on rock chimneys along the coast. Due to climate change, adaptation, and behavioral changes, these animals have adapted to a new habitat.

Students in today’s world are being exposed, almost on a daily basis, to exciting new discoveries and insights that, in many cases, were beyond our predictions even a few short years ago—from revolutionary new techniques to develop vaccines to stop pandemics, to the impacts of climate change on their local environments, and advances in medical techniques to fight diseases such as cancer. Therefore, it is important we not only know why we are different but how we are the same as the other species we share the planet with. It is our task, as instructors, not only to make these findings available to our students but to enlighten them as to why these discoveries are important to their lives and society. At the same time, we must provide students with a firm foundation in those core principles on which biology is founded, and in doing so, provide them with the background to better understand the many discoveries still to come.

As educators, the authors of this text understand the needs of our colleagues in developing curricula that increasingly focus on relevancy and delivery in the online environment. McGraw Hill Education has long been an innovator in the development of digital resources, and the Essentials of Biology text is at the forefront of the integration of these technologies into the science classroom. In this edition, that involved:

• Making the content more relevant to the current generation of students by updating chapter openers and Biology & You boxes to focus on issues and topics important to the discussions that students are hearing in the world around them.
• Integrating relevancy modules to supplement the format of a traditional textbook and provide another avenue for students to engage with the content.
• Redesigning the artwork to ensure it transitions to the digital world of mobile devices.
• Developing a new boxed feature, Diversity in Science, to emphasize the contributions of unrecognized scientists to our understanding of biology.

Table of contents :

Cover
Title Page
Copyright Page
Brief Contents
About the Authors
Preface
Acknowledgments
Contents
CHAPTER 1 Biology: The Science of Life
1.1 The Characteristics of Life
Life Requires Materials and Energy
Living Organisms Maintain an Internal Environment
Living Organisms Respond
Living Organisms Reproduce and Develop
Living Organisms Have Adaptations
1.2 Evolution: The Core Concept of Biology
Natural Selection and Evolutionary Processes
Organizing the Diversity of Life
1.3 Science: A Way of Knowing
Start with an Observation
Develop a Hypothesis
Make a Prediction and Perform Experiments
Develop a Conclusion
Scientific Theory
An Example of a Controlled Study
Publishing the Results
1.4 Challenges Facing Science
Climate Change
Biodiversity and Habitat Loss
Emerging and Reemerging Diseases
UNIT I The Cell
CHAPTER 2 The Chemical Basis of Life
2.1 Atoms and Atomic Bonds
Atomic Structure
The Periodic Table
Isotopes
Arrangement of Electrons in an Atom
Types of Chemical Bonds
Chemical Formulas and Reactions
2.2 Water’s Importance to Life
The Structure of Water
Properties of Water
2.3 Acids and Bases
Acidic Solutions
Basic Solutions
pH and the pH Scale
Buffers and pH
CHAPTER 3 The Organic Molecules of Life
3.1 Organic Molecules
The Carbon Atom
The Carbon Skeleton and Functional Groups
3.2 Carbohydrates and Lipids
Building Complex Biological Molecules
Carbohydrates
Lipids
3.3 Proteins and Nucleic Acids
Proteins
Nucleic Acids
CHAPTER 4 Inside the Cell
4.1 Cells Under the Microscope
The Limit to Cell Size
4.2 The Plasma Membrane
Functions of Membrane Proteins
4.3 The Two Main Types of Cells
Prokaryotic Cells
4.4 A Tour of the Eukaryotic Cell
Nucleus and Ribosomes
Endomembrane System
Vesicles and Vacuoles
Energy-Related Organelles
The Cytoskeleton and Motor Proteins
Centrioles
Cilia and Flagella
4.5 Outside the Eukaryotic Cell
Cell Walls
Extracellular Matrix
Junctions Between Cells
CHAPTER 5 The Dynamic Cell
5.1 What Is Energy?
Measuring Energy
Energy Laws
5.2 ATP: Energy for Cells
Structure of ATP
Use and Production of ATP
The Flow of Energy
5.3 Metabolic Pathways and Enzymes
An Enzyme’s Active Site
Energy of Activation
5.4 Cell Transport
Passive Transport: No Energy Required
Active Transport: Energy Required
Bulk Transport
CHAPTER 6 Energy for Life
6.1 Overview of Photosynthesis
Plants as Photosynthesizers
The Photosynthetic Process
6.2 The Light Reactions—Harvesting Energy
Photosynthetic Pigments
The Light Reactions: Capturing Solar Energy
6.3 The Calvin Cycle Reactions—Making Sugars
Overview of the Calvin Cycle
The Many Uses of G3P
6.4 Variations in Photosynthesis
C3 Photosynthesis
C4 Photosynthesis
CAM Photosynthesis
Evolutionary Trends
CHAPTER 7 Energy for Cells
7.1 Cellular Respiration
Phases of Complete Glucose Breakdown
7.2 Outside the Mitochondria: Glycolysis
Energy-Investment Step
Energy-Harvesting Steps
7.3 Outside the Mitochondria: Fermentation
Lactic Acid Fermentation
Alcohol Fermentation
7.4 Inside the Mitochondria
Preparatory Reaction
The Citric Acid Cycle
The Electron Transport Chain
7.5 Metabolic Fate of Food
Energy Yield from Glucose Metabolism
Alternative Metabolic Pathways
UNIT II Genetics
CHAPTER 8 Cellular Reproduction
8.1 An Overview of Cellular Reproduction
Chromosomes
Chromatin to Chromosomes
8.2 The Cell Cycle: Interphase, Mitosis, and Cytokinesis
Interphase
M (Mitotic) Phase
8.3 The Cell Cycle Control System
Cell Cycle Checkpoints
Internal and External Signals
Apoptosis
8.4 The Cell Cycle and Cancer
Genetic Control of the Cell Cycle
Other Genetic Changes and Cancer
8.5 Characteristics of Cancer
Characteristics of Cancer Cells
Cancer Treatment
Prevention of Cancer
CHAPTER 9 Meiosis and the Genetic Basis of Sexual Reproduction
9.1 An Overview of Meiosis
Homologous Chromosomes
The Human Life Cycle
Overview of Meiosis
9.2 The Phases of Meiosis
The First Division—Meiosis I
The Second Division—Meiosis II
9.3 Meiosis Compared with Mitosis
Meiosis I Compared with Mitosis
Meiosis II Compared with Mitosis
Mitosis and Meiosis Occur at Different Times
9.4 Changes in Chromosome Number
Down Syndrome
Abnormal Sex Chromosome Number
CHAPTER 10 Patterns of Inheritance
10.1 Mendel’s Laws
Mendel’s Experimental Procedure
One-Trait Inheritance
Two-Trait Inheritance
Mendel’s Laws and Probability
Mendel’s Laws and Meiosis
10.2 Mendel’s Laws Apply to Humans
Family Pedigrees
Genetic Disorders of Interest
10.3 Beyond Mendel’s Laws
Incomplete Dominance
Multiple-Allele Traits
Polygenic Inheritance
Gene Interactions
Pleiotropy
Linkage
10.4 Sex-Linked Inheritance
Sex-Linked Alleles
Pedigrees for Sex-Linked Disorders
X-Linked Recessive Disorders
CHAPTER 11 The Instructions for Life: DNA and RNA
11.1 DNA and RNA Structure and Function
The Structure of DNA
Replication of DNA
RNA Structure and Function
11.2 Gene Expression
From DNA to RNA to Protein
Review of Gene Expression
11.3 Gene Regulation
Levels of Gene Expression Control
CHAPTER 12 Biotechnology and Genomics
12.1 Biotechnology
Recombinant DNA Technology
DNA Sequencing
Polymerase Chain Reaction
DNA Analysis
Genome Editing
12.2 Biotechnology Products
Genetically Modified Bacteria
Genetically Modified Plants
Genetically Modified Animals
12.3 Stem Cells and Cloning
Reproductive and Therapeutic Cloning
12.4 Genomics and Proteomics
Sequencing the Bases of the Human Genome
Proteomics and Bioinformatics
CHAPTER 13 Mutations and Genetic Testing
13.1 Gene Mutations
Causes of Gene Mutations
Types and Effects of Mutations
13.2 Chromosomal Mutations
Deletions
Duplications
Translocation
Inversion
13.3 Genetic Testing
Obtaining Chromosomes for Analysis
Karyotype Analysis
Testing for a Protein
Testing the DNA
Testing the Fetus
Testing the Embryo and Egg
13.4 Gene Therapy
Ex Vivo Gene Therapy
In Vivo Gene Therapy
UNIT III Evolution
CHAPTER 14 Darwin and Evolution
14.1 Darwin’s Theory of Evolution
Before Darwin
Darwin’s Conclusions
Natural Selection and Adaptation
Darwin and Wallace
14.2 Evidence of Evolutionary Change
Fossil Evidence
Biogeographical Evidence
Anatomical Evidence
Molecular Evidence
CHAPTER 15 Evolution on a Small Scale
15.1 Natural Selection
Types of Selection
Sexual Selection
Adaptations Are Not Perfect
Maintenance of Variation
15.2 Microevolution
Evolution in a Genetic Context
Causes of Microevolution
CHAPTER 16 Evolution on a Large Scale
16.1 Speciation and Macroevolution
Defining Species
Models of Speciation
16.2 The Fossil Record
The Geologic Time Scale
The Pace of Speciation
Causes of Mass Extinctions
16.3 Systematics
Linnaean Classification
Phylogenetic Trees
Cladistics and Cladograms
The Three-Domain System
UNIT IV Diversity of Life
CHAPTER 17 Viruses, Bacteria, and Protists
17.1 Viruses, Viroids, and Prions
Structure of a Virus
Viral Reproduction
Plant Viruses
Animal Viruses
Viroids and Prions
17.2 Emerging Viruses and SARS-CoV-2
COVID-19
17.3 Prokaryotes
The Origin of the First Cells
Bacteria
The Archaea
17.4 Protists
Evolution of Protists
Classification of Protists
CHAPTER 18 Plants and Fungi
18.1 An Overview of Plants
An Overview of Plant Evolution
Alternation of Generations
18.2 The Diversity of Plants
Nonvascular Plants
Vascular Plants
Seed Plants
18.3 Fungi
General Biology of a Fungus
Fungal Diversity
Ecological Benefits of Fungi
Economic Benefits of Fungi
Fungi as Disease-Causing Organisms
CHAPTER 19 Animals
19.1 The Evolution of Animals
Ancestry of Animals
The Evolutionary Tree of Animals
Evolutionary Trends
19.2 Sponges and Cnidarians: The Early Animals
Sponges: Multicellularity
Cnidarians: True Tissues
19.3 Flatworms, Mollusks, and Annelids: The Lophotrochozoans
Flatworms: Bilateral Symmetry
Mollusks
Annelids: Segmented Worms
19.4 Roundworms and Arthropods: The Ecdysozoans
Roundworms: Pseudocoelomates
Arthropods: Jointed Appendages
19.5 Echinoderms and Chordates: The Deuterostomes
Echinoderms
Chordates
Fishes: First Jaws and Lungs
Amphibians: Jointed Vertebrate Limbs
Reptiles: Amniotic Egg
Mammals: Hair and Mammary Glands
19.6 Human Evolution
Evolution of Humanlike Hominins
Evolution of Modern Humans
UNIT V Plant Structure and Function
CHAPTER 20 Plant Anatomy and Growth
20.1 Plant Cells and Tissues
Epidermal Tissue
Ground Tissue
Vascular Tissue
20.2 Plant Organs
Monocots Versus Eudicots
20.3 Organization of Leaves, Stems, and Roots
Leaves
Stems
Roots
20.4 Plant Nutrition
Adaptations of Roots for Mineral Uptake
20.5 Transport of Nutrients
Water Transport in Xylem
Sugar Transport in Phloem
CHAPTER 21 Plant Responses and Reproduction
21.1 Plant Hormones
Auxins
Gibberellins
Cytokinins
Abscisic Acid
Ethylene
21.2 Plant Responses
Tropisms
Photoperiodism
21.3 Sexual Reproduction in Flowering Plants
Overview of the Plant Life Cycle
Flowers
From Spores to Fertilization
Development of the Seed in a Eudicot
Monocots Versus Eudicots
Fruit Types and Seed Dispersal
Germination of Seeds
21.4 Asexual Reproduction and Genetic Engineering in Plants
Propagation of Plants in a Garden
Propagation of Plants in Tissue Culture
Genetic Engineering of Plants
UNIT VI Animal Structure and Function
CHAPTER 22 Organization of the Animal Body and Homeostasis
22.1 The Body’s Organization
Epithelial Tissue Protects
Connective Tissue Connects and Supports
Muscular Tissue Moves the Body
Nervous Tissue Communicates
22.2 Organs and Organ Systems
Transport and Protection
Maintenance of the Body
Control
Sensory Input and Motor Output
Reproduction
22.3 Homeostasis
Organ Systems and Homeostasis
Negative Feedback
CHAPTER 23 The Transport Systems
23.1 Open and Closed Circulatory Systems
Open Circulatory Systems
Closed Circulatory Systems
Comparison of Vertebrate Circulatory Pathways
23.2 Circulation in Humans
The Human Heart
Blood Vessels
Lymphatic System
Capillary Exchange in the Tissues
23.3 Blood: A Transport Medium
Plasma
Formed Elements
Cardiovascular Disorders
CHAPTER 24 The Maintenance Systems
24.1 Respiratory System
The Human Respiratory Tract
Breathing
Lungs and External Exchange of Gases
Respiration in Other Animals
Transport and Internal Exchange of Gases
24.2 Urinary System
Human Kidney
Problems with Kidney Function
CHAPTER 25 Digestion and Human Nutrition
25.1 Digestive System
Complete and Incomplete Digestive Systems
The Digestive Tract
Accessory Organs
Digestive Enzymes
25.2 Nutrition
Introducing the Nutrients
25.3 The Classes of Nutrients
Carbohydrates
Lipids
Proteins
Minerals
Vitamins
Water
25.4 Understanding Nutrition Guidelines
Updating Dietary Guidelines
Visualizing Dietary Guidelines
The Bottom Line
25.5 Nutrition and Health
Body Mass Index
Disorders Associated with Obesity
Eating Disorders
CHAPTER 26 Defenses Against Disease
26.1 Overview of the Immune System
Lymphatic Organs
Cells of the Immune System
26.2 Nonspecific Defenses and Innate Immunity
Barriers to Entry
The Inflammatory Response
The Complement System
Natural Killer Cells
26.3 Specific Defenses and Adaptive Immunity
B Cells and the Antibody Response
T Cells and the Cellular Response
26.4 Immunizations
26.5 Disorders of the Immune System
Allergies
Autoimmune Diseases
AIDS
CHAPTER 27 The Control Systems
27.1 Nervous System
Examples of Nervous Systems
The Human Nervous System
Neurons
The Nerve Impulse
The Synapse
Substance Abuse Disorders
The Central Nervous System
The Peripheral Nervous System
27.2 Endocrine System
The Action of Hormones
Hypothalamus and Pituitary Gland
Thyroid and Parathyroid Glands
Adrenal Glands
Pancreas
CHAPTER 28 Sensory Input and Motor Output
28.1 The Senses
Chemical Senses
Hearing and Balance
Vision
Cutaneous Receptors and Proprioceptors
28.2 The Motor Systems
Types of Skeletons
The Human Skeleton
Skeletal Muscle Structure and Physiology
CHAPTER 29 Reproduction, Development, and Aging
29.1 How Animals Reproduce
Asexual Versus Sexu Reproduction
Sexual Reproduction
29.2 Human Reproduction
Male Reproductive System
Female Reproductive System
Control of Reproduction
Infertility
Sexually Transmitted Diseases
29.3 Human Embryonic Development
Fertilization
Early Embryonic Development
Later Embryonic Development
Placenta
Fetal Development and Birth
29.4 Aging in Humans
Factors Influencing Aging
UNIT VII Ecology
CHAPTER 30 Ecology of Populations
30.1 The Science of Ecology
Ecology: A Biological Science
30.2 The Human Population
Present Population Growth
Projections of Future Population Growth
More-Developed Versus Less-Developed Countries
Comparing Age Structures
Population Growth and Environmental Impact
30.3 Characteristics of Populations
Distribution and Density
Population Growth
Patterns of Population Growth
Factors That Regulate Population Growth
30.4 Life History Patterns and Extinction
Extinction
CHAPTER 31 Communities and Ecosystems
31.1 Ecology of Communities
Community Composition and Diversity
Ecological Succession
Interactions in Communities
Community Stability
31.2 Ecology of Ecosystems
Autotrophs
Heterotrophs
Energy Flow and Chemical Cycling
Chemical Cycling
31.3 Aquatic and Terrestrial Ecosystems
Aquatic Ecosystems
Terrestrial Ecosystems
Primary Productivity
31.4 Ecological Consequences of Climate Change
Contributors to Climate Change
Consequences of Climate Change
CHAPTER 32 Human Impact on the Biosphere
32.1 Conservation Biology
32.2 Biodiversity
Direct Values of Biodiversity
Indirect Values of Biodiversity
32.3 Resources and Environmental Impact
Land
Water
Food
Energy
Minerals
Other Sources of Pollution
32.4 Sustainable Societies
Today’s Society
Characteristics of a Sustainable Society
Appendix A Periodic Table of Elements & The Metric System
Glossary
Index