Nutrition: How Living Things Get Food

Name: Nutrition: How Living Things Get Food
Author: StemPy Lab

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.

3 lessons, about 1 h 30 min3 simulations12 problems6 practice questionsPython in every lesson

Created by StemPy Lab

Course outline (3 lessons)

Lesson 1about 30 min
Life processes and making food
Living things need energy and materials all the time, even when they rest, so they carry out life processes: nutrition, respiration, transport and excretion. Green plants make their food by photosynthesis, using light, carbon dioxide and water, with chlorophyll in their chloroplasts. Gases pass in and out of the leaf through stomata.
1 simulation2 practice questions1 Python program4 problems1 Python lab
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Lesson 2about 30 min
Ways of getting food
Heterotrophs get their food from other living things, in three main ways. Holozoic living things take in whole food and digest it inside. Saprophytes digest dead matter outside their body and absorb it. Parasites feed on a living host. Amoeba wraps food in pseudopodia, and Paramecium sweeps food into one spot with cilia.
1 simulation2 practice questions1 Python program4 problems
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Lesson 3about 30 min
Digestion in human beings
Food is broken into small molecules as it passes along the alimentary canal. Saliva starts on starch; the stomach adds hydrochloric acid, pepsin and mucus; in the small intestine bile, pancreatic juice and intestinal juice finish the work. Villi absorb the food, the large intestine takes back water, and the waste leaves through the anus.
1 simulation2 practice questions1 Python program4 problems1 Python lab1 question set1 note
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Nutrition: Practice Paper

15 questions · 20 min

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More onLife Processes › Nutrition Human Body › Digestive System Plant Biology › Photosynthesis

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Nutrition: How Living Things Get Food

Course outline (3 lessons)

Life processes and making food

Ways of getting food

Digestion in human beings

Test Your Learning

Your teacher

Discussion (0)