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- A food chain always starts with a producer. A producer is an organism that makes its own food. Most food chains start with a green plant, because plants make their own food by photosynthesis. A consumer is a living thing that eats other plants and animals.
www.bbc.co.uk/bitesize/articles/zkwgvwx
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Key stage 1. Science. Introduction to food chains. How animals get food. New. Year 2. How animals get food. I can describe how animals get the food they need to stay alive. Download all resources. Share activities with pupils. Slide deck. Lesson details. Video. Worksheet. Starter quiz. Exit quiz. Slide deck. Download slide deck. Lesson details.
All animals, including humans, eat food that was, or is, a plant or an animal. But green plants and algae can use light energy to make their own food! This process called photosynthesis .
Food chains and webs show the transfer of energy between trophic levels. They can be represented as pyramids of number and biomass and the efficiency of these transfers can be calculated.
Cells generate energy from the controlled breakdown of food molecules. Learn more about the energy-generating processes of glycolysis, the citric acid cycle, and oxidative phosphorylation.
How Cells Obtain Energy from Food. As we have just seen, cells require a constant supply of energy to generate and maintain the biological order that keeps them alive. This energy is derived from the chemical bond energy in food molecules, which thereby serve as fuel for cells.
Animals consume food to replenish energy; their metabolism breaks down the carbohydrates, lipids, proteins, and nucleic acids to provide chemical energy for these processes. Plants convert light energy from the sun into chemical energy stored in molecules during the process of photosynthesis.
