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unit 2 science SG
| Question | Answer |
|---|---|
| What do producers make using carbon from carbon dioxide? | Energy storage molecules |
| When do organisms give of carbon dioxide? | When they release energy from energy storage molecules during cellular respiration |
| Can carbon be created or used up? | No. Carbon moves around, but it is not created or destroyed |
| In a closed ecosystem, what happens to the total amount of carbon? | the amount stays fixed |
| Carbon is part of what type of melecules? | Energy storage molecules |
| What organisms perform photosynthesis? | Producers, such as plants |
| What process do all organisms perform to release energy? | Cellular respiration |
| If the amount of carbon in the air changes, can it affect other parts of an ecosystem? | Yes. A change in one part of an ecosystem can affect all the other parts |
| Is Carbon moving into and out of the air at the same time? | Yes |
| Where does the energy needed by organisms first enter an ecosystem? | from the sun |
| How does energy from the sun enter an ecosystem? | Plants take in light energy during photosynthesis |
| What happens to carbon dioxide in the air when trees are removed? | less carbon dioxide is pulled from the air |
| Why does removing trees affect other living organisms? | Less carbon is turned into energy storage molecules that are available to other living things |
| What are cells made of? | Organelles |
| What is an organelle? | a structure inside a cell that performs a specific job |
| what is the function of the cell membrane? | it surrounds and protects the cell and controls what enters and leaves the cell |
| What is cytoplasm? | a jelly'like substance that holds the organelles in place |
| what organelle is called the "powerhouse of the cell"? | the mitochondria |
| what takes place in the mitochondria? | Cellular respiration |
| What is the job of the nucleus? | it directs the activities of the cell. |
| What is the job of chloroplasts? | they use sunlight to make food through photosynthesis |
| how are chloroplasts and mitochondria related? | Chloroplasts make food, while mitochondria break down food to release usable energy |
| what is the chemical formula for glucose? | C6 H12 O6 |
| What is the chemical formula for oxygen? | O2 |
| What is the chemical formula for carbon dioxide? | CO2 |
| What is the chemical formula for water? | H2O |
| What are the reactants of photo synthesis? | Carbon dioxide and water |
| What are the products of photosynthesis? | Glucose and oxygen |
| During photosynthesis, where does the carbon in glucose come from? | Carbon dioxide in the air |
| What is the equation for photosynthesis? | 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂ |
Created by:
Kelsieleiva