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Photosynthesis Definition

Photosynthesis transforms carbon dioxide and water into sugar and oxygen using energy from the Sun. For example, plants produce their own food and release oxygen through this process.

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Photosynthesis & Respiration

LESSON MATERIALSmove

Fun Facts

  • Cyanobacteria and algae go through the process of photosynthesis.
  • Half of Earth's oxygen comes from oceanic cyanobacteria and plankton.
  • Since humans need energy for everything we do, we can harness photosynthesis to make chemical or electrical energy.

Why Do We Need To Know About Photosynthesis

Learning about photosynthesis helps us understand how plants make their food and why it’s important for our planet and future technology. Scientists study photosynthesis to try and use its power to make renewable energy better. They want to create better solar panels and biofuels, which are fuels made from plant materials, so we don’t have to rely so much on oil and gas.

This kind of research can lead to jobs in fields like biology, biotech, and renewable energy. It shows us how studying plants can help us find new ways to make energy. By doing experiments, like watching small pieces of leaves make oxygen in water, students can see how photosynthesis can help make biofuels and improve solar energy.

Frequently Asked Questions

What is the process of photosynthesis?
Photosynthesis is the chemical process in which plants and other organisms combine carbon dioxide and water, using energy from the Sun, to produce sugar and oxygen.
What is the process of cellular respiration?
Cellular respiration is the chemical process that occurs when an organism breaks down the food it has stored (sugars and fats) and uses it for energy.
Besides plants, what are examples of other organisms that use photosynthesis?
Some bacteria, such as cyanobacteria, go through photosynthesis and so do algae.
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