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Ch 11: Requirements of Biological Systems

About This Chapter

Watch online video lessons to learn what all biological systems need to maintain and regulate their internal processes and survive. Each lesson is accompanied by a short multiple-choice quiz you can use to check your understanding of these biology topics.

Requirements of Biological Systems - Chapter Summary and Learning Objectives

In this chapter, your instructor will show you what biological organisms, including you and me, need to grow, stay healthy and reproduce. At the beginning of the chapter, you'll learn about the two key ingredients all living systems require to survive and thrive: energy and matter. Your instructor will also discuss dynamic homeostasis, an essential system feature that maintains and stabilizes blood glucose, body temperature, kidney function and sleep, among other biological processes. The key role of the cell will be covered, including its importance in the homeostatic process.

Additional topics include biological feedback systems, whereby cells and organisms continue their activities and maintain their internal conditions, even during stressful events, such as birth. When you've finished watching the video lessons and taking the online self-assessment quizzes, you should have an understanding of the following:

  • How biological organisms grow, maintain and reproduce
  • Dynamic homeostasis, including how it pertains to internal biological conditions
  • The essential components and resources associated with healthy biological systems
  • The relationship between healthy biological systems and cellular environments
  • How organisms use feedback systems to regulate their biological processes

VideoObjective
Living Systems Requirement for Free Energy and MatterDescribe how living systems require free energy and matter for growth, reproduction and maintainenance.
The Environmental Requirements for Growth, Reproduction and Dynamic HomeostasisDiscuss how the processes of growth, reproduction, and dynamic homeostasis require cells to create and maintain internal environments that differ from their external environments.
Using Feedback Systems to Regulate Growth, Reproduction and Dynamic HomeostasisExplain how organisms use feedback systems to regulate growth, reproduction and dynamic homeostasis.

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