Planaria Regeneration in Ideal Temperatures vs. Cold Temperatures Christina Malfas Abstract Planaria are flatworms that live in quiet freshwater bodies. They live in a narrow range of temperatures‚ from 22-24°C. They regenerate asexually‚ specifically through a process called epimorphosis‚ in which they completely regenerate one half of their bodies after splitting themselves in two. The diffusion gradient model assumes that cells in an organism “know” their orientation on that organism due
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Investigating the effect of temperature on the action of a protease enzyme on exposed developed film Plan Aim: The aim of the experiment is to find out what effect temperature has on the action of a protease enzyme on exposed developed film. Enzymes are biological catalysts. They are made in livings things built up by amino acids to make protein. Enzymes are able to speed up reactions and can repeat reactions. There are various factors that affect the activity of enzymes they are: "Y Temperature "Y pH
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between the average winter temperature over the past 10 years and the current average winter temperature. If the current price of home heating oil is $1.20‚ the current price of natural gas is $2.00‚ and the average winter temperature this year is 40 degrees compared to 28 degrees over the past 10 years. A. What is the quantity of home heating oil demanded? 6.6 units B. How much did change in winter temperature effect demand in comparison to the average winter temperature? 12 units C. What is the estimated
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Nicole Reardon Biology 1520‚ Section P2 Effects of penicillin and temperature on the growth of Escherichia coli Abstract Bacteria growth is known to be either augmented or impeded by a number of various factors; in this experiment‚ our group tested how E. coli is affected by penicillin as well as how different temperatures can affect bacteria growth. We know that antibiotics are generally specialized against certain types of bacteria—more specifically‚ some are most effective against Gram-negative
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anabolic synthesizes components to create larger molecules. Respiration provides energy for these reactions‚ and respiration needs oxygen to occur. Thus‚ calculating the change in oxygen can determine metabolic rate (University‚ 59). In this experiment‚ we will observe and analyze the oxygen consumption of Carassius auratus‚ also known as goldfish. Oxygen depletion has proven to increase with the presence of caffeine (Womack). Goldfish are ideal species to further solidify this theory due to the
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the solution into test tube. I will place the test tube into a beaker and insulate the test tube‚ for minimum heat loss. (As shown in the diagram above.) 2.Secondly I will measure the required amount of Zinc (Zn) on a weighing scale‚ again for precise accuracy. I will then measure the starting temperature using a thermometer. Next I will pour the Zinc into the test tube containing CuSO4. 3.Finally I will measure the final temperature using a thermometer and record the temperature rise in °c. (I will
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saturated with tap water. After saturation‚ two WFP seeds were added to each petri dish. The dishes were then labeled for their assigned light condition‚ which was either full fluorescent light exposure or darkness. Plants were left under their assigned light condition for twenty-four hours a day‚ for seven days and watered daily. After seven days‚ plants were retrieved from their environment and stem length‚ plant mass‚ and cotyledon mass were all measured and recorded. Results Over the course of
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Effects of Temperature‚ pH‚ Enzyme Concentration‚ and Substrate Concentration on Enzymatic Activity INTRODUCTION Enzymes‚ proteins that act as catalysts‚ are the most important type of protein[1]. Catalysts speed up chemical reactions and can go without being used up or changed [3] Without enzymes‚ the biochemical reactions that take place will react too slowly to keep up with the metabolic needs and the life functions of organisms. Catecholase is a reaction between oxygen and catechol
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objective of our experiment was to determine the effect of temperature on the rate of movement of Porcellio scaber. Our prediction was that P. scaber would have faster rates of movement in hotter temperatures. We expected this response as P. scaber is an ectotherm. Hence‚ its body temperature is directly determined by the temperature of its environment (Mellanby 1939). Løkke and van Gestel (1998) stated that the rate of the metabolism is controlled by the environmental temperature for ectotherms
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magnet affect by warm or cold temperatures? This experiment showed that if a magnet is cold‚ then it will have more magnetic pull than a warm magnet. The independent variable is the temperature of magnets. The dependent variable is the magnetic pull of magnets. The experimental group is magnets exposed to different temperatures. The control group is the room temperature magnet. The control variables are the amount of time the magnets are exposed to different temperatures‚ the type of magnet‚ and the
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