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G7 Science Ch3.2
cellular respiration
| Question | Answer |
|---|---|
| Define cellular respiration | the process by which cells break down glucose & other molecules from food, using oxygen, and release energy |
| What is breathing? | the process of moving air in AND out of your lungs. It brings oxygen into lungs and removes waste products of cellular respiration from your body. |
| Explain stages of cellular respiration | 1)cytoplasm: glu broken down into sm particles & a little energy released. 2)mitochondria: molecules broken down more + use O2 to release great deal of energy |
| Cellular respiration equation | C6H12O6 + 6 O2 ——> 6 CO2 + 6 H2O + energy |
| Name raw materials for cellular respiration | glucose and oxygen |
| Animals get glucose from ____________ | the foods they consume |
| Plants get glucose from ___________ | photosynthesis, which they produce themselves! |
| Who carries out photosynthesis? | producers |
| Who carries out cellular respiration | producers & consumers |
| Fermentation | an energy releasing process that does NOT require oxygen. |
| Which releases more energy, cellular respiration or fermentation? | cellular respiration |
| Explain alcohol fermentation | breakdown of glu w/o O2 in yeast or single celled organisms that produces alcohol + CO2 + little energy |
| Explain lactic fermentation | muscle cells break down glucose w/o O2 and produce lactic acid + some energy |
| Plants capture energy by ?(cellular respiration/photosynthesis/fermentation) | photosynthesis |
| Define autotrophs | plant or other organisms who make their own food |
| Fermentation releases | some energy (< cellular respiration) and lactic acid |
| Plants release energy by way of ?(cellular respiration/photosynthesis/fermentation) | cellular respiration |
| Plants get energy when O2 reacts with ________ | glucose; C6H12O6 |
| A swimmer gets energy by way of ?(cellular respiration/photosynthesis/fermentation) | cellular respiration (since they usu breathe even when swimming!) |
| Humans are _________ because they get energy __________ | heterotrophs; the food they eat |
| If a swimmer drowns, he will initially get energy by way of ?(cellular respiration/photosynthesis/fermentation) | lactic acid fermentation |
| Compare the raw materials of photosynthesis and Cellular respiration | photosynthesis uses Carbon dioxide and water whereas Cellular respiration requires glucose and oxygen |
| In which organelles does cellular respiration occur? | mitochondrion |
| ____________ is a process that releases energy in cells without using oxygen | fermentation |
| Name foods made with the help of fermentation | bread, beverages such as beer and sparkling wine, sparkling grape juice |
| What is the source of energy used in photosynthesis (glucose/sunlight/ chlorophyll/ DNA) | chlorophyll |
Created by:
ka1usg
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