Objectives 1. The student will use this lab exercise as the basis for writing a scientific method report. 2. The student will understand how the rates of chemical reactions are affected by temperature. 3. The student will understand the overall fermentation reaction by yeast‚ starting with glucose as an energy source. 4. The student will understand how to measure fermentation rate. II. Introduction The student is to use this lab exercise as the foundation
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temperature has on the growth and respiration of yeast fermentation. The growth and respiration of the yeast can be determined by using a glucose/ yeast solution mixed with water in flasks set at different temperatures. Yeast in order to produce‚ has to make energy‚ to carry out all cellular functions (Spicer‚ & Holbrook‚ 2007). The concept that aerobic metabolism of all yeasts‚ is determined by the relative sizes of the transport rate of sugar into the cell and the transport rate of respiratory into the
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Associate Program Material Cell Energy Worksheet Answer the following questions: Cellular respiration: What is cellular respiration and what are its three stages? Cellular respiration is a metabolic process that all living organisms use to harvest from foods in the form of adenosine triphosphate. There are three stages of cellular respiration-glycolysis‚ citric acid cycle‚ and electron transport chain. What is the role of glycolysis? Include the reactants and the products. Where
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Lab #2: Energy in Cell Virtual Lab - Week 3 NAME: ________________________________________ 1. What is the importance of the light and dark reactions in photosynthesis? Photosynthesis works by absorbing light. Our sun gives off energy and the chlorophyll from the plant absorb this energy. The energy is then used to separate water into hydrogen and oxygen and then they combine hydrogen and carbon dioxide to make sugars. 2. What happens to food energy during photosynthesis? During
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IX Science (Cell: The basic unit of life) 1 The energy currency of cell is -: (a) ADP 2 (b) AMP (c) ATP (d) GTP [1] (c) Shrink (d) Show plasmolysis [1] (c) Mitochondria (d) Chloroplast [1] (d) Nerve cell [2] [2] [2] [2] [3] [3] [3] [1] A cell in placed in hypotonic solution will -: (a) Swell up (b) Not undergo any change 3 Which organelle release oxygen? (a) Ribosome (b) Golgi apparatus 4 Which of the following human cells lack nuecleus? (a) WBC (b) RBC (c) Muscle cell 5 6 7 8 9
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In the article “The Government Can’t Stop Sugar” by the Chicago Tribune‚ we learned about the many problems that sugar has caused. Sugar has led up to many disputes in the government‚ it also has caused many Americans to become addicted to it. Our love for sugar has led to unhealthy lifestyles‚ causing many Americans diseases and to become obese. The Chicago tribune argues that our sweet is killing us. They gave various studies‚ examples‚ and facts that persuades the reader into thinking that we
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extraction and isolation of metals from ores involve the following major steps: • Concentration of the ore‚ • Isolation of the metal from its concentrated ore‚ and • Purification of the metal. It is also called ‘Refining’. Stages of extraction of metals: After the concentration of the ore is done‚ there are two main steps or stages in extractive metallurgy. They are: Conversion of the ore into Metal oxide or metal compound. Extraction of crude metal from metal from metal compound. Concentration of
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Whitman Tip Sheet #5 Absence Policy Guidelines for Students Walt Whitman High School Attendance Office: 301-320-6576 I’M LATE‚ I’M LATE: WHAT TO DO? Students who arrive late for their first class period (7:25 am-8:11 am) DO NOT GO TO THE ATTENDANCE OFFICE. Go directly to class and present a note to your first period teacher signed by your parent/guardian; otherwise‚ late arrivals will be considered UNEXCUSED. Students who arrive late after the first period has concluded should
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spike from the center of its rosette of leaves‚ which it is then pollinated by agents like hummingbirds (Skousen‚ 1992). Seed development occurs immediately after successful pollination when a small green pod that looks like a fat cucumber is formed. However‚ due to excess heat‚ the pod dries and through explosive mechanism‚ it releases the seeds to the soil. The seeds can remain dormant if there are no suitable conditions for germination. Depending on the growing conditions‚ Aloe vera can live for
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Determination of rate of photosynthesis INTRODUCTION Photosynthesis is the major process by which light from the sun is captured by plants‚ algae and some bacteria to produce energy. It is a process in which light energy is converted into chemical energy which is then stored in sugars. Photosynthesis occurs in two stages‚ light-dependant reactions and light-independent reactions. In light-dependent reactions the chlorophyll traps light energy which is then used to excite electrons and split water
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