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Science Review
Question | Answer |
---|---|
What are nucleic acids? | Stores coded information for cells. |
What is the relationship between an enzyme and a substrate? Between enzyme and ribosomes? | Substrates are the molecule enzymes attach to and change into 2 substances. Ribosomes make proteins and some proteins carry certain enzymes. |
Define Enzymes | Proteins that speed up the rate of a chemical reaction without being used up. |
Define metabolism | All chemical reactions in an organism. |
Define photosynthesis | Light energy is converted into chemical energy by producers; use enzymes. |
Define producers | Make their own food |
What's the relationship between photosynthesis and producers? | Most producers use sunlight to make their own food, they absorb sunlight and use it to make glucose which they break down for energy. |
Write down and memorize the equation for photosynthesis | 6C02 + 6H20 + Energy --> C6 H12 + 6O2 Carbon Water Yields Glucose Oxygen Dioxide |
Cellular Respiration: Explain what, where it occurs, what is needed for glucose to be broken down? | Chemical reactions that break down glucose into simpler substances and released stored energy Starts in cytoplasm and moves into mitochondria Uses oxygen to break down glucose for energy (ATP) |
Write down and memorize the equation for respiration | C6H12 + 6O2 --> 6CO2 + 6H2O + Energy Glucose Oxygen Oxygen Carbon Water Dioxide |
Define Fermination (3 Parts) | Breakdown of glucose begins in cytoplasm and doesn't move Occurs when oxygen is not present Does not release as much energy as respiration |
What are the waste products from fermentation? | Lactic acid: formed in muscles cells after exercise. - Formed by some bacteria and is used to make yogurt and cheese. Alcohol and carbon dioxide: formed when yeast breaks down glucose. |
What's the relationship between photosynthesis and respiration? | Photosynthesis makes the glucose that is broken down during respiration for energy. |
What is the difference between a suspension and a solution? | Both are mixtures but a solution has particles that are evenly mixed while a suspension does not. Therefore, particles fall out and fall to the bottom. |
What's the difference between lipids and proteins? | Lipids are fat and oils Proteins are used to build muscles |