Light Lab Introduction: The purpose of this lab is to observe how influential light is to the construction and/or use of CO2 and O2 amongst plants. This can be examined by experimenting the effects of plants under both light and no light. In order to begin this experiment you must begin by wrapping the “BioChamber” with aluminum foil to prevent light from coming through to the leaves‚ however‚ once the lid has been covered you are to poke holes so you can insert the sensors. Next‚ you will
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Cellular Energetics Study Guide 1. Overall Metabolism a. Oxidation – a molecule LOSSES hydrogen‚ energy is RELEASED b. Reduction – a molecule GAINS hydrogen‚ energy is GAINED and stored (the more reduced a molecule is‚ the more energy is stored in its COVALENT BONDS) *** Always occur in a coupled pair (RED-OX)*** c. Electron Carriers i. Oxidizing Agents: are REDUCED to OXIDIZE another molecule 1. NAD+ - oxidizes glucose to 2 pyruvate in glycolysis
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Aerobic Respiration Breaking down glucose to release energy Products are Carbon dioxide and water Diffusion is … the movement of molecules from a region of high concentration to a low concentration until the concentration is equal. Role of a human circulatory system: Diffuse In – oxygen (O2)‚ dissolved food (glucose) and water (H2O) Diffuse Out – carbon dioxide (CO2)‚waste and water(H2O) Respiration – releasing energy in cells Breathing – getting air into and out of your body
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Biochemistry Essential Elements of Life Carbon‚ hydrogen‚ oxygen‚ nitrogen (96%) Calcium‚ phosphorus‚ potassium‚ sulphur (4%) Isotopes Atoms of an element that differ in neutrons Radioactive isotopes decay spontaneously‚ giving off energy Cohesion Hydrogen bonds hold water molecules together Adhesion is an attraction between two substances Surface tension measures how hard it is to break the surface tension of a liquid Hydrocarbons Organic molecules consisting of only carbon
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naturally vegetated areas (covered with plants)‚ especially of Australia - work together or affect by each other - how much of it there is in each place or at each time - non-living things / living thins + PHOTOSYNTHESIS AND RESPIRATION What is photosynthesis? What is respiration? Relationships ? The process by which plant cells capture energy from sunlight and use it to combine carbon dioxide and water to make sugars and oxygen. 6CO2 + 12H2O C6H12O6 + 6O2+6H2O Carbon
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Gabriela Rios-Martinez March 1‚ 2014 BIO 141 Exam 1 Study Questions Chapter 1: Biology and the Tree of Life (#1 – 4) 1. What is the difference between a hypothesis and a scientific Theory? Between a hypothesis and a prediction? What kinds of hypotheses are useful for scientific investigations that try to explain the natural world‚ and which are not? Give one or more examples of hypotheses that are and are not scientifically useful. (a.) A scientific theory has two components; a pattern
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Investigate the effect of temperature on the rate of respiration of various parts of plants (germinating seeds and dormant (non-germinating) seeds)‚ by measuring the oxygen consumption and change in gas volume of respirometers containing either germinating or non-germinating seeds at different temperatures to measure the rate of respiration of these beans at different temperatures. Hypothesis 1.Germinating seeds have a higher rate of respiration as compared to non-germinating seeds and the glass
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overall change in the height of the plant increased. This suggests a positive correlation. Plants require sunlight‚ water and carbon dioxide to grow. These are necessary in the process of photosynthesis‚ which makes glucose for the plants. The glucose is then used by the plant in the process of cellular respiration in order to make energy. 8. Conclusion:
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Chapter 5 Assignment 1. What is energy? What are the three forms of energy? Energy is the capacity to do work. There are four types of energy according to the powerpoint. They are Kinetic energy (energy of motion)‚ potential energy (stored energy)‚ thermal energy (heat)‚ and chemical energy (potential energy of molecules). 2. State the First and Second Laws of Thermodynamics. Include entropy in your explanation. The first law states that energy can neither be created nor destroyed it can
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we‚ and all other organisms‚ need to survive. It is produced primarily in the processes of aerobic and anaerobic respiration by oxidative and substrate phosphorylation. 4 molecules of ATP are produced from 4 ADP and 4 inorganic phosphates in glycolysis in the cytoplasm of every cell‚ by the oxidation of a triose phosphate into two molecules of pyruvate. In anaerobic respiration these are the only 4 ATP molecules produced per molecule of glucose as there is no oxygen available for the link
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