Part of GED® Science: Life Science
GED® Science: Human Body Systems & Health (Deep Dive)
A deep dive into how the human body is built and kept alive, expanding the single 'Human Body Systems' lesson from the GED® Life Science course into a full mini-course. You'll see how cells build up into organ systems, meet the major systems and their jobs, follow oxygen and nutrients to your cells, learn how the body senses and moves, understand nutrition, and explore how disease spreads and how the body and public health defend against it. Plain language, all-new labeled diagrams, common-misconception warnings, and GED®-style practice with full explanations.
📚 Course Curriculum
Your body is built in levels, each made of the level before it. Understanding this ladder makes the rest of the body make sense. [[figure:body_organization …
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The body is a team of organ systems, each handling a job. The GED® test focuses on what each system does and how to match …
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Why do you need to eat and breathe? Because your cells need raw materials to make energy, and three systems work together to deliver them. …
Open trial session →Your body senses its surroundings and responds — quickly through the nervous system and more slowly through the endocrine system — while the skeletal and …
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Food gives the body both energy and the building materials it needs. Nutrition is where biology meets daily health. [[figure:nutrition_chart Carbohydrates and fats supply energy, …
Open trial session →A pathogen is an organism or agent that can cause disease — certain bacteria, viruses, fungi, or parasites. Diseases spread in different ways, and matching …
Open trial session →Course Syllabus
This self-paced GED® Science course follows a 6-lesson sequence. Work through the modules in order so that each skill supports the next.
Course sequence
Module 1 - Lessons 1-3
- From Cells to Body Systems
- The Major Organ Systems
- Oxygen, Nutrients & Energy
Module 2 - Lessons 4-6
- Control & Movement
- Nutrition: Calories, Vitamins & Minerals
- Disease, Pathogens, Immunity & Health 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 From Cells to Body Systems.
- Interpret observations, data, models, or evidence related to The Major Organ Systems.
- Apply scientific reasoning to questions involving Oxygen, Nutrients & Energy.
- Evaluate explanations and identify common errors about Nutrition: Calories, Vitamins & Minerals.
- Connect Disease, Pathogens, Immunity & Health 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
32 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.