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Cycles of Life: Exploring Biology
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| Lesson 1:
The Unity and Diversity of Life provides an overview of biology, with discussion of the diversity of as well as similarities between living organisms. |
Lesson 14:
Plant Structure outlines the characteristics of plant tissues, the nature of plant growth, and the methods of water transport employed by various plants. |
| Lesson 2:
Chemical Foundations of Life details the functions and principal forms of all matter, including atoms, molecules, elements, and compounds. |
Lesson 15:
Plant Reproduction demonstrates how plants have evolved other remarkable mechanisms to maximize reproduction opportunities. |
| Lesson 3:
Secrets of the Cell explains what a cell is and why it is crucial to the understanding of all life processes.
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Lesson 16:
Animal Structure examines structure as a commonality among animals, who achieve motion promoted by a musculoskeletal system and maintain equilibrium through homeostasis and feedback. |
| Lesson 4:
The Power of Metabolism follows the story of former Olympic gymnast Cathy Rigby, who struggled with bulimia while competing as a teenager. |
Lesson 17:
Circulation: A River of Life illustrates how food and chemical products are transported rapidly to and from the body's living cells through the circulatory system to sustain life.
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| Lesson 5:
Energy In—Energy Out explores the pathways by which cells trap and use energy: photosynthesis and aerobic respiration. |
Lesson 18:
Immunity explores the complex system of physical and
chemical defenses that protect animals against disease. |
| Lesson 6:
Generations: Mitosis and Meiosis chronicles the process of cell division. |
Lesson 19:
Respiration offers an overview of the human respiratory system through the experiences of an athlete training for a triathlon competition. |
| Lesson 7:
Patterns of Inheritance begins with theories of inheritance developed by Gregor Mendel in the mid-1800s and goes on to discuss how modern-day plant geneticists improve the productivity of commercially grown crops.
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Lesson 20:
Digestion and Fluid Balance provides numerous examples of how animals control their food and fluid input/output to survive.
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| Lesson 8:
DNA: Blueprint of Life explores the research that led to the famous double-helix model of DNA. |
Lesson 21:
The Neural Connection features examples of a polo player in action and a novice at a firing range to demonstrate how reflex actions and chemical responses are triggered directly by sensory stimuli. |
| Lesson 9:
Proteins: Building Blocks of Life explains the structure of proteins, along with a unique property of DNA and proteins to replicate the genetic code over thousands of years. |
Lesson 22:
Endocrine Control: Systems in Balance touches on the basics of pituitary function, effects on the adrenal gland, and the influence of biofeedback in regulating the reactions to stress. |
| Lesson 10:
Microevolution presents the theories of natural selection that further defined the origin of species. |
Lesson 23:
Animal Reproduction and Development describes the continuation of life through the physical process of reproduction. |
| Lesson 11:
Macroevolution describes the larger picture of species' changes over time, their patterns and trends. |
Lesson 24:
Populations and Communities explores various examples of species interaction, including predation, commensalism, mutualism, and competitive exclusion. |
| Lesson 12:
Viruses, Bacteria, and Protistans chronicles the human immunodeficiency virus (HIV) in an effort to define a virus, its construction, and its behavior. |
Lesson 25:
Ecosystems and the Biosphere shows how a delicate balance of interactions determines life and death for the inhabitants of any ecosystem. |
| Lesson 13:
Fungi, Plants, and Animals explains the basic biological classification system and gives an evolutionary overview of the characteristics found in three of the five animal kingdoms: fungi, plants, and animals. |
Lesson 26:
The Human Factor demonstrates how human behavior affects the global environment. The possible effects of ozone layer reduction and global warming are discussed. |
