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Cellular Respiration
Question | Answer |
---|---|
What is cellular respiration? | The process of releasing energy from food. Simple sugars, like glucose are broken down to release energy. |
What does aerobic cellular respiration use and produce? | Aerobic cellular respiration uses glucose and oxygen. It produces carbon-dioxide, water, and ATP. |
What is ATP? | ATP is a high energy molecule that provides energy to cell processes. |
What are the 3 main stages of cellular respiration? | Glycolysis, the Krebs Cycle, and the electron transport chain. |
Explain glycolysis. What does it produce? | One glucose molecule and two molecules of ATP are used. 2 pyruvate, 4 ATP, and 2 NADH molecules are made. (NADH is a high energy molecule that provides electrons to some cell processes.) It doesn't use oxygen. |
What is a redox reaction? | A redox reaction includes an electron acceptor (oxidizing agent) and an electron donor (reducing agent). |
Where is pyruvate (made in glycosis) transported? | It's transported into the mitochondria. There it is converted into acetyl CoA. |
Acetyl CoA is used in the Krebs Cycle. Explain what these 8 chemical reactions produce? | The Krebs cycle produces 1 ATP, 3 NADH, and 1 FADH2 molecules. |
What do NADH and FADH2 do? | NADH and FADH2 donate electrons to the electron transport chain. |
Where is the electron transport chain found? | The inner mitochondrial membrane. |
What does aerobic respiration produce? | Aerobic respiration of one molecule of glucose produces a total of 36 molecules of ATP. |
What is the difference between aerobic and anaerobic respiration? | Anaerobic respiration produces ATP without oxygen. Aerobic respiration uses oxygen and produces ATP. |
In oxygen-poor environments, what respiration is used? | Cells that live in oxygen-poor environments or are working under low-oxygen circumstances can use anaerobic respiration. |
What is fermentation? | Fermentation is one form of anaerobic ATP production. Only glycolysis takes place. The Krebs cycle/electron transport chain do not take place. It involves the conversion of pyruvate to a different molecule. Pyruvate may convert to ethanol or lactate. |
What is the importance of photosynthesis and cellular respiration? | Photosynthesis and cell respiration are two parts of a never-ending cycle, keeping the balance of carbon and oxygen in the atmosphere. |
What types of organisms undergo photosynthesis? | Organisms that undergo photosynthesis, such as plants, algae, and some types of bacteria, are autotrophs and producers |
What is photosynthesis? | The biological process by which most plants, some algae, and some bacteria produce organic compounds for their food from water and carbon dioxide using solar energy. |
What does chlorophyll do? | A green pigment found in photosynthetic organisms. Plants and other photosynthesizing organisms contain chlorophyll. When chlorophyll absorbs light, it absorbs the energy contained within it. |
How does photosynthesis begin? | Photosynthesis begins with water and carbon dioxide, which is converted to carbohydrates in the form of simple sugars and oxygen. |
What's the chemical equation for photosynthesis? | 6 CO2 + 6 H2O → C6H12O6 + 6 O2. |
Where does photosynthesis take place? | The thylakoids of chloroplasts. |
What is the calvin cycle? | The Calvin cycle removes carbon dioxide from the environment and uses it to produce sugars rich in energy. |