PHOTOSYNTHESIS
What gas do plants take in for photosynthesis?
carbon dioxide
What gas do cells need for cellular respiration?
oxygen
Which process makes food for the plant?
photosynthesis
Where does most energy in ecosystems originally come from?
the Sun
What part of the plant cell carries out photosynthesis?
chloroplast
What sugar is used by cells to release energy?
glucose
Which process releases energy from food?
cellular respiration
What are the two types of energy?
potential and kinetic energy
What green pigment in plants helps absorb sunlight?
chlorophyll
What part of the cell is known as the “powerhouse” because it releases energy?
mitochondria
Which process happens in plants AND animals?
cellular respiration
What does the law of conservation of energy state?
Energy cannot be created or destroyed — it can only be changed (transformed)
What are the two main products of photosynthesis?
glucose (sugar) and oxygen
What are the three main products of cellular respiration?
carbon dioxide, water, and energy (ATP)
How are photosynthesis and cellular respiration related?
The products of one are the reactants of the other
Where do humans get their energy from?
The food they eat
Write the word equation for photosynthesis.
carbon dioxide + water + sunlight → glucose + oxygen
Write the word equation for cellular respiration.
glucose + oxygen → carbon dioxide + water + energy (ATP)
Why are both processes important for life on Earth?
because they provide food and energy, and recycle gases needed for life
How is energy different from matter?
Energy cycles, matter flows