Biology Revision summer 2012 1-Characteristics of living organisms Nutrition- taking in of nutrients which are organic substances and mineral ions ‚ containing raw materials or energy for growth and tissue repair ‚ absorbing and assimilating them . Excretion- the removal from organisms of toxic material‚ the waste products of metabolism and substances in excess of requirement . Respiration- the chemical reactions that break down the Sensitivity- The ability to detect or sense changes in the
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of tube tail. o Why is alcohol fermentation needed in yeast to carry out glycolysis In an environment absent of oxygen‚ yeast undergoes alcohol fermentation in order to continue ATP production but also to recycle NAD+ that is needed for glycolysis. Without this recycling‚ glycolysis and therefore cellular respiration cannot proceed and organism will die. o How efficient is fermentation- 2% (2 ATP) efficient compared to aerobic respiration‚ which is 39% (36 ATP) efficient at capturing the energy
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A central organizing concept in biology is that life changes and develops through evolution‚ and that all life-forms known have a common origin. The theory of evolution postulates that all organisms on the Earth‚ both living and extinct‚ have descended from a common ancestor or an ancestral gene pool. This last universal common ancestor of all organisms is believed to have appeared about 3.5 billion years ago.[21] Biologists generally regard the universality and ubiquity of the genetic code as definitive
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The Effect of Yeast on Different Fruit Juices | Researched by Kristyn S. 2001-02 | * PURPOSE * HYPOTHESIS * EXPERIMENT DESIGN * MATERIALS * PROCEDURES * RESULTS * CONCLUSION * RESEARCH REPORT * BIBLIOGRAPHY * ACKNOWLEDGEMENTS * ABOUT THE AUTHOR | PURPOSEThe purpose of this experiment was to determine the amount of fermentation of four different fruit juices after adding yeast. I became interested in this idea when I saw the fruit in my family’s refrigerator
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Cellular respiration is the process by which food is broken down and converted into usable energy for the body. Essentially during this principally catabolic process‚ glucose molecules are broken down into energy known as adenosine triphosphate (ATP). Thus‚ glucose is the common energy source in cellular respiration. The process of cellular respiration begins with one glucose molecule and oxygen that yields the production of ATP as well as byproducts of water and carbon dioxide. This process is separated
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What Is Cellular Respiration and What Influences It’s Function? BSC 2010L 06/19/2013 Abstract: Eating is a basic essential of life that most people don’t pay much mind till they’re hungry. Eating is essential and very important for various reasons but one of the main reasons is for energy. Our bodies use a term called cellular respiration which is the process by which chemical energy of food is released and partially captured in the form of ATP or energy. Throughout the experiment
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The Effect of pH on Enzymatic Reaction Rate Abstract Enzymes are affected by changes in pH. The most favorable pH value— the point where the enzyme is most active—is known as the optimum pH. This experiment was conducted to determine the effect of pH reaction rate on an enzyme‚ catalase‚ from yeast. The experimental results indicate that the catalase worked best at a neutral pH level of seven (7). Introduction An enzyme is a protein molecule that serves as a catalyst. “The basic function of
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remembering – emotional relevance. Boucheard did something on intelligence (therefore – Bouchard = intelligence). Be creative; make your own way to remember names. Dates remembering – link them to birthdays and dates of the events you can remember. How to apply this: Think about everyday attributions. Psychology is all around us! Look up ‘logical fallacies’ to improve your critical thinking skills for psychological study analysis. Society < – > Individual (behaviour) The Biological Level of Analysis
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How music affects the brain Music: It’s been ingrained in our culture since the first instruments were made. It is such a large part of our society; we incorporate it into our daily lives through our phones‚ television‚ and media. Music stimulates the brain through the pleasure center and sends us waves of emotions and reactions. As a DJ‚ music is essential to my lifestyle. I’m constantly listening to different beats‚ tempos‚ and rhythms. Music rises and falls with the generation at that time
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The effect of different coloured lights on the rate of Photosynthesis Objective: To find out which colour of light provides the best consequences for the production of oxygen/ the rate of photosynthesis Background: In photosynthesis‚ there are two main parts‚ including light dependent and light-independent reactions. Plants use the energy from light for producing sugar‚ which is being converted into ATP by cellular respiration. They also are the only organisms that produce oxygen along with glucose
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