Bio 93 Review Sheet: 1. Understand all the THEMES presented in the introductory lecture (lec 1). 2. What is an open system? Energy in and out‚ comes in and leaves as heat 3. What are the 4 most important elements in the human body? C‚ O‚ N‚ H 4. Draw the periodic square for Helium. How many valence electrons does it have? How do you figure this out using the periodic table? Two valence e-‚ 23He‚ all the way right full shell only holds two electrons 5. What is an isotope? How are they used
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Burning peanuts to simulate cellular respiration This lab will be assessed on Conclusion & Evaluation. Aim To determine the average energy content of 1g of peanut. Method 1. Set up a clamp stand so that it is holding a 100cm3 beaker. 2. Using a measuring cylinder‚ pour 50cm3 of water into the beaker. 3. Use a thermometer to record the temperature of the water. 4. Place some aluminium foil over the beaker to prevent heat loss. 5. Record the mass of a peanut using an electronic balance
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M2: Discuss the probable homeostatic responses to changes in the internal environment during exercise. D2: Evaluate the importance of homeostasis in maintain the healthy functioning of the body. Homeostasis is the process which the body internally is kept relatively stable despite changes in the environment. Your body is able to adapt to several conditions. For instance‚ average human body temperature is 37°C‚ varying slightly from person to person. When the temperature outside drops to 30 degrees
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study the effects of ethanol on the cellular respiration of mealworms. Cellular respiration is the process by which cells harvest the energy stored in food. It is the intake of oxygen and energy in the form of glucose‚ and the cells ability to break it down into carbon dioxide‚ water‚ and energy required for the body to function. More scientifically‚ it is a three-step pathway that produces ATP (adenosine triphosphate.) The three stages of cellular respiration are: glycolysis‚ the citric acid cycle‚ and
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ATP OR ATP and its roles in living organisms The nature/structure of ATP and its importance as energy currency. Production and use of ATP in cytoplasm by glycolysis Production of ATP by mitochondria in Krebs cycle and ETS – aerobic respiration. Anaerobic respiration. Role of chloroplasts in ATP production via light independent reaction Uses e.g. Active transport (carrier protein shape changes)‚ Nerve action (maintaining resting potentials via Na+/K+ pump and resynthesis of ACh)‚ selective reabsorption
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another. Electron aids in the gradual‚ stepwise release of the energy from oxidation‚ rather than rapid combustion. ATP power the activities that requires work --- one of the most which is movement. Explain the purpose of oxygen in respiration Without oxygen‚ cellular respiration could not occur because oxygen serves as the final electron acceptor in the electron transport system. The electron transport system would therefore not be available. Describe the structure of mitochondria A mitochondrion contains
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Program Material Cell Energy Worksheet Answer the following questions: Cellular respiration: • What is cellular respiration and what are its three stages? Cellular respiration is the aerobic harvesting of energy from food molecules. The first stage of cellular respiration is Glycolysis. The second stage of cellular respiration is the citric acid cycle. Lastly‚ the third stage of cellular respiration is the electron transport. • What is the role of glycolysis? Include the reactants
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questions: Cellular respiration: • What is cellular respiration and what are its three stages? Cellular respiration is the process by which cells harvest energy that is stored in food. The three stages are glycolysis‚ citric acid cycle‚ and electron transport. • What is the role of glycolysis? Include the reactants and the products. Where does it occur? Glycolysis which mean splitting sugar‚ with oxygen it is the first step in cell respiration‚ without oxygen it allows
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Honors Biology Study Guide Cells‚ organelles and Microscopes 1) * Ocular-Contains a magnifying lens that focuses the image from the objective into your eye. * Body tube- tube that holds eyepiece and connects the objectives. * Turret- part that holds two or more objective lenses and can be rotated to easily change power. * Objectives- increases the magnification used for viewing. * Stage-Supports dish in correct location to lens. * Stage clips- holds down the dish containing
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Unit 5 Describe the two process by which hormones can cause certain genes to be turned on. (4) Any 2 from: - A hormone binds to a receptor in the cell surface membrane - Idea of the receptor causing (chemical) changes inside the cell - A (functional) {second messenger} activates an {enzyme/transcription factor/eq} Any 2 from: - Idea of a hormone entering the cell through the cell membrane - The hormone binds to a receptor - The {hormone-receptor complex/eq} acts as a transcription factor
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