GED® Science: Life Science
Life Science is the largest part of the GED® Science test. This course takes you from the tiny cell all the way up to whole ecosystems: how cells work and make energy, how traits are inherited, how species evolve, how energy flows through food chains, and how the human body keeps itself in balance. Every topic uses plain language, labeled diagrams, and GED®-style practice with full explanations.
📚 Go Deeper — Companion Courses
- 1 GED® Science: The Cell -- Structure & Function (Deep Dive)
- 2 GED® Science: Cellular Energy (Deep Dive)
- 3 GED® Science: Genetics & Heredity (Deep Dive)
- 4 GED® Science: Evolution & Natural Selection (Deep Dive)
- 5 GED® Science: Ecosystems & Energy Flow (Deep Dive)
- 6 GED® Science: Human Body Systems & Health (Deep Dive)
- 7 GED® Science: Homeostasis & Life Science Data (Deep Dive)
📚 Course Curriculum
Every living thing — a bacterium, an oak tree, you — is built from cells. The cell theory sums up three big ideas:. All living …
Open trial session →Life runs on energy, and that energy originally comes from the Sun. Two linked processes move it through living things. Photosynthesis happens in plants (in …
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Why do you resemble your parents? The answer is DNA — a molecule shaped like a twisted ladder (a 'double helix') that stores instructions in …
Open trial session →Evolution is the change in the inherited traits of a population over many generations. Its main engine is natural selection, an idea from Charles Darwin. …
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An ecosystem is all the living things in an area plus their non-living surroundings (water, soil, air, sunlight). Energy enters almost every ecosystem as sunlight …
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The human body is a team of organ systems that each handle a job and work together to keep you alive. The major players:. Circulatory …
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Homeostasis is the body's ability to keep a stable internal environment even as the outside changes — steady temperature, blood sugar, and water balance. It …
Open trial session →Course Syllabus
This self-paced GED® Science course follows a 7-lesson sequence. Work through the modules in order so that each skill supports the next.
Course sequence
Module 1 - Lessons 1-4
- The Cell: Life's Basic Unit
- Cellular Energy: Photosynthesis & Respiration
- Genetics & Heredity
- Evolution & Natural Selection
Module 2 - Lessons 5-7
- Ecosystems & Energy Flow
- The Human Body Systems
- Homeostasis & Reading Science Data
Practice and completion
- Use worked examples and lesson practice to check understanding after each module.
- Review incorrect answers, explain the correction, and repeat weak skills.
- Complete the available mixed or final course practice to demonstrate readiness.
Course Outcomes
By the end of this course, learners will be able to:
- Explain the key scientific ideas and vocabulary in The Cell: Life's Basic Unit.
- Interpret observations, data, models, or evidence related to Genetics & Heredity.
- Apply scientific reasoning to questions involving Evolution & Natural Selection.
- Evaluate explanations and identify common errors about Ecosystems & Energy Flow.
- Connect Homeostasis & Reading Science Data with other course concepts in mixed practice.
- Use feedback and answer explanations to diagnose and correct mistakes.
- Complete mixed, exam-style practice with clearer reasoning and greater independence.
📝 Practice Questions
17 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.
2 written response prompts with model rubric.