Biology
High School (9–10)
General
Life Processes › NutritionLife Processes › RespirationLife Processes › Transport in Living OrganismsHuman Body › Digestive SystemPlant Biology › PhotosynthesisHuman Body › Respiratory SystemLife Processes › ExcretionHuman Body › Excretory SystemHuman Body › Circulatory SystemChapter 4Life Processes
A plant stands still in the sun, and a dog runs after a ball. Both are alive because their cells keep working, day and night. In this chapter you see how living things get their food, how they release energy from it, how they carry materials around the body, and how they remove their wastes. You follow a bite of food through your own body, count breaths and heartbeats, and use Python with real numbers about the body.
Part of Biology · High School (9–10) (chapter 4)
Following adds this path to your dashboard and enrolls you in the 3 courses you can open, so you can start right away.
Courses in This Path (3)
1.Not started2.Not started
Nutrition: How Living Things Get Food
Green plants make their own food from light, water and carbon dioxide. Animals and fungi take theirs from others, in different ways. Follow both, and then trace a meal through the human digestive system.
Respiration: Releasing Energy from Food
Food holds energy, and respiration releases it in every cell. See how glucose is broken down with and without oxygen, how fish, insects and people take in oxygen, and how your lungs work.