grade 11-biology_fetena_net_c646-11-29

Unit One: Biology and Technology

Introduction to Biology and Technology

  • Science Seeks to Improve: Technology is defined as the application of scientific knowledge for specific goals or purposes.

  • Society Benefits from Technology: Enhances quality of life through improved gadgets and systems.

1.1 Learning from Nature

Nature Defined

  • Physical and Natural World: Encompasses landscapes, ecosystems, weather, organisms, geology, celestial bodies, and inanimate objects.

  • Survival of Organisms: Structures and functions of organisms are adapted to their environment.

Imitation in Technology

  • Learning from Nature: Science and engineering benefit from imitating natural structures, leading to technological innovations.

    • Macro and Nano Scales: Designing technologies by studying biological structures at different scales.

  • Outcomes of the Unit:

    • Learn technologies derived from nature.

    • Recognize biologically inspired devices.

    • Design devices based on biological mechanisms.

1.2 Biology and Technology

Biotechnology

  • Definition: Integration of natural and engineering sciences to leverage biological systems for new products.

  • Examples: Yeasts in bread and beer production.

Benefits of Biology to Technology

  • Sources of Materials: Biology provides materials that inform design and innovation.

  • Examples Contributing to Technological Advances:

    1. Medicinal Plants: Development of medicines from biochemical substances in plants.

    2. Gene Engineering: Use of genes to cure genetic conditions and produce biosynthetic materials.

    3. Building Design: Mound architecture of termites inspiring stable structures.

1.3 Impacts of Biology and Technology on Society

Positive Impacts of Biology

  • Food Security: Higher productivity from biological advancements.

  • Medical Innovations: Improved health and longevity through new treatments.

  • Energy and Water Supply: Enhanced accessibility to clean resources.

Negative Impacts

  • Biological Weapons: Potential to harm the environment and society.

  • Sex-selective Practices: Skewed gender ratios could endanger societal dynamics.

Positive Impacts of Technology

  • Problem Solving: Technology addresses various societal issues.

Negative Impacts

  • Pollution: Industrial practices lead to air and water contamination.

  • Resource Depletion: Unsustainable extraction of natural resources.

1.4 Ethical Issues in Biology

Ethical Considerations

  • Definition: Concerns about the moral implications of using biological research for health and environmental management.

Treatment of Plants and Animals

  • Plants: Importance of ethical conservation practices; risks from destructive experimentation.

  • Animals: Ethical treatment mandates minimizing pain and distress during biological studies.

The Three Rs Principles in Animal Research

  1. Reduction: Minimize animal usage while improving research techniques.

  2. Refinement: Enhance animal welfare and proper living conditions.

  3. Replacement: Use alternatives like cell cultures and computer simulations.

Unit One Summary

  • Blending Biology and Technology: Forms biotechnology, vital for developing solutions to complex societal problems.

  • Mutual Dependence: Biology aids technological innovations, which in turn rely on biological understanding for advancements.

  • Ethical Framework: Addresses the moral implications of biological research, guiding humane and respectful treatment of living organisms.

Unit One Review Questions

Part I: True or False

  1. Humans learned from swallows to build houses.

  2. Blending biology and technology creates biotechnology.

  3. The East Gate Center mimics termite mound design.

  4. Nature provides reliable knowledge for innovation.

Part II: Multiple Choice Questions (Sample)

  1. Biotechnology utilizes ___ to develop products.

    • A. Biotech

    • B. Biological Systems

  2. Instruments used in biological studies enhance investigations.

Part III: Essay Questions

  1. Discuss human lessons learned from nature.

  2. Explain the significance of biological systems in technology design.

  3. Address the ethical issues surrounding biological research.