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Chp. 4 shayla
Active & Transive Import
| Question | Answer |
|---|---|
| What happens when a cell is placed in a hypotonic solution? | water will move into the cell, causing the cell to swell and maybe even burst. |
| What happens when a cell is placed in a hypertonic solution? | water will leave the cell, causing the cells to shrink and shrivel. |
| What’s the main difference between active and passive transport? | In passive transport the molecules move down the cell's concentration gradient, but in active transport the molecules move against the cell's concentration gradient. |
| List an example of active transport. | Nerve Cells |
| List the types of passive transport. | diffusion, ion channels and solutions . |
| What is diffusion? | Movement of molecules from an area of high concentration to an area of low concentration; requires no energy. |
| Explain the results of a sodium-potassium pump working across a membrane. | It moves sodium Ions to the outside of the cell and potassium Ions to the inside. |
| Does facilitated transport move a substance down or up a gradient? | Down |
| What is the energy-capturing stage of photosynthesis? | Chlorophyll |
| What are the products of the light reactions? | It captures light & produces food |
| What are the ATP and NADPH from the light reactions used for? | to fix carbon dioxide into sugar |
| Where does the oxygen released by photosynthesis come from? | From the carbon dioxide and water with the energy from the sun |
| What happens to the glucose produced from photosynthesis? | it can be formed into long chains as cellulose or or a structural carbohydrate as starch.It can also be used as the backbone of fatty acids, or amino acids |
| Describe the structures of the chloroplast where photosynthesis takes place. | It has an outer membrane which surrounds the chloroplast and an inner membrane which forms flatten sacs called thylakoids. As a result their are 2 separate spaces inside the chloroplast. The interior space that surrounds the thylakoids is filled with a f |
| What is the significance of the electron transport chain? | It transfers electrons |
| What are the reactants required for photosynthesis? | Carbon dioxide and Water |
| What are the products of photosynthesis? | Glucose and Oxygen |
| What are the products of alcoholic fermentation? | Ethyl Alcohol and Carbon Dioxide |
| What is the metabolic process where glucose is ultimately converted to two molecules of pyruvate? | glycolysis |
| Why do your muscles get sore after vigorous exercise? | The buildup of lactate |
| What is the purpose of fermentation? | to allow organisms to obtain the 2 net ATP molecules per glucose from glycolysis. |
| Where does the citric acid cycle take place? | Within the mitochondria |
| Write the chemical reaction for the overall process of cellular respiration. | C6H12O6 + 6O2 6CO2 + 6H2O |
| Which is more efficient, aerobic or anaerobic cellular respiration? | Aerobic Cellular Respiration |
| What are the important electron-accepting enzymes in cellular respiration? | ATP |
| What is chemiosmosis? | the diffusion of ions across the membrane |
Created by:
shayla1423
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