SCIENCE - GEOLOGY (PS&CR) Flashcards
The Processes of Photosynthesis and Cellular Respiration (14 cards)
What is photosynthesis?
A period of chemical changes where green plants capture the Sun’s light energy, transforming said energy into chemical energy that is then stored into energy-rich food compounds (such as sugars)
Which living things use photosynthesis?
Green plants and specific single-celled organisms
How is energy changed in photosynthesis?
Light energy is transformed into chemical energy
What substances does photosynthesis use?
- carbon dioxide
- water
What substances does photosynthesis produce?
- glucose
- oxygen
How can photosynthesis be represented?
light energy and carbon dioxide and water -> glucose and oxygen
Why is photosynthesis important?
- Photosynthesis transforms the Sun’s energy into a form that living things can use to survive
- Photosynthesis produces the oxygen that most living things need to survive
What is cellular respiration?
A series of chemical changes that let living things release the energy stored in energy-rich food compounds such as sugars to fuel all life functions
Which living things use cellular respiration?
Nearly all living things on Earth
How is energy changed in cellular respiration?
Chemical energy is changed to other forms of energy such as kinetic and thermal energy
What substances does cellular respiration use?
- glucose
- oxygen
What substances does cellular respiration produce?
- carbon dioxide
- water
How can cellular respiration be represented?
glucose & oxygen -> carbon dioxide & water & usable energy
Why is cellular respiration imporant?
- Cellular respiration releases the energy that living things use to survive
- Cellular respiration produces the carbon dioxide that green plants need to carry out photosynthesis
