About This Chapter
Who's it for?
Anyone who needs help learning or mastering high school biology material will benefit from taking this course. There is no faster or easier way to learn biology. Among those who would benefit are:
- Students who have fallen behind in understanding what organisms need to survive and biological systems
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning science (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn about biological systems
- Students who struggle to understand their teachers
- Students who attend schools without extra science learning resources
How it works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the biological systems chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the biological systems chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any biological systems question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students will review:
This chapter helps students review the concepts in a biological systems unit of a standard high school biology course. Topics covered include:
- Development, maintenance and reproduction in living systems
- Importance of free energy and matter
- Internal cellular environments
- Use of feedback systems in organisms
1. Living Systems Requirement for Free Energy and Matter
Free energy and matter are required by all living things in order to grow, reproduce, and maintain biological processes. Additionally, free energy and matter must also be recycled through the environment in order to remove dead material and allow for new growth.
2. The Environmental Requirements for Growth, Reproduction & Dynamic Homeostasis
Cells need to maintain internal environments that are different from their external environments in order to grow and reproduce. In this video lesson, you will understand some ways that cells can control their internal conditions to ensure proper biological functioning.
3. Using Feedback Systems to Regulate Growth, Reproduction & Dynamic Homeostasis
In order to maintain specific internal conditions, organisms use feedback mechanisms. Feedback is essential to the regulation of internal environments, which allows for proper biological functioning.
4. What Are Macronutrients? - Definition, Functions & Examples
Macronutrients are energy-providing chemical substances consumed by organisms in large quantities. The three macronutrients in nutrition are carbohydrates, lipids, and proteins.
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Other chapters within the High School Biology: Help and Review course
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- Basic Science Lab Skills: Help and Review
- Inorganic Chemistry Review for High School Biology: Help and Review
- Basic Organic Chemistry: Help and Review
- How Enzymes Work: Help and Review
- Essentials of Cell Biology: Help and Review
- Cell Communication: Help and Review
- Cell Metabolism: Help and Review
- Cell Division in Biology: Help and Review
- Nucleic Acids - DNA and RNA - in Biology: Help and Review
- The Steps of DNA Replication: Help and Review
- Transcription and Translation of Nucleic Acids: Help and Review
- Genetics and Heredity in Biology: Help and Review
- Genetic Mutations in Biology: Help and Review
- DNA Technology and Genomics: Help and Review
- Bacterial Biology Essentials: Help and Review
- Viruses in Biology: Help and Review
- The Origin of the Universe and Life on Earth: Help and Review
- Geologic Time, Dating & Fossils: Help and Review
- Evolution Basics: Help and Review
- The Evolution & Classification of Organisms: Help and Review
- Basics of Plant Biology: Help and Review
- Plant Reproduction & Growth Cycles: Help and Review
- Introduction to Fungi: Help and Review
- Introduction to Invertebrates: Help and Review
- Introduction to Vertebrates: Help and Review
- Circulatory System & Other Systems: Help & Review
- The Nervous, Immune, and Endocrine Systems: Help and Review
- Animal Reproduction & Embryonic Development: Help and Review
- Human Reproductive Systems: Help and Review
- Ecology and the Environment: Help and Review
- Human Effects on the Environment: Help and Review
- Animal Behavior: Help and Review
- Laboratory Techniques for Molecular Biology & Genetic Engineering: Help and Review
- Analyzing Scientific Data in Biology: Help and Review