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science questions -
mar 10 2010
Question | Answer |
---|---|
1. Why is respiration important for a cell ? | respiration is important for a cell because you can not have a cell without it respiration helps it to produce energy |
2. Explain the relationship between photosynthesis and respiration. | If you cant produce energy for the photosynthesis to occur than you can not get the compound from photosynthesis |
3. Which raw material is not needed for fermentation to occur? | lots of microorganisms are needed to cause fermentation you also must have sugar for feeding yeast and heat for the yeast the 2 combined makes yeast grow because it is a living organism |
4. How do plants and animals maintain the level of oxygen in the atmosphere? | plant give off oxygen by taking in carbon dioxide and animals use energy and give off carbon dioxide |
5. Do plant cells need to carry out respiration? Explain. | no because they already produce energy |