Enzymes are catalysts that increase the rate of chemical reactions organisms‚ allowing cells to break or build things instantly. The structure of an enzyme is essential to its function. Enzymes are proteins‚ made up of 100-1000 amino acids bonded together in chains. These chains are folded/coiled into a unique 3-D structure that allows them to bind to a reactant‚ called a substrate at an active site. Enzymes are flexible‚ and therefore can change it’s shape to better accommodate its substrate; this
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Mashrek International School Investigate the Factors that Affect the Rate of Respiration in Yeast. (Temperature) Fawzi El Ansari Biology HL Title: Investigate the Factors that Affect the Rate of Respiration in Yeast. (Temperature) Aim: The aim of this experiment is to investigate the effect of changing the temperature on the rate of respiration in yeast. This will be done by placing equal amounts of yeast in each beaker that contains the same pH solution. Each beaker will be mixed with glucose
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The effect of temperature on the rate of maggot movement Research and Rationale This experiment is aiming to analyse the behaviour of maggots when they are exposed to light and the effect of that on their movement rate. Behaviour is the way in which animals respond to external factors is known as behaviour. As animals become bigger their behaviour becomes more complex. This is because larger animals tend to have a more complex nervous and hormonal system. Two of the types of behaviour are called
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Abstract This experiment analyzes the effects of how temperature affects bacterial and fungus amylase and also discovers the optimum temperature for these enzymes. The amylase was mixed with starch at temperatures of 0℃‚ 37℃‚ 57℃‚ and 90℃. Iodine was added to each mixture and colour changes in each case. Bacteria amylase was found to be effective at 55 0C as the temperature dropped drastically from 4.58℃ to 2.33℃. This shows that the amylase catabolized a lot of starch hence little is left which
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What affect does the concentration of sugar have on the rate of respiration of yeast? Apparatus: 1. Stopwatch with a resolution of 0.001 seconds 2. 4 test tubes 3. 200 ml of yeast in a beaker 4. 200 ml of glucose solution 5. 500 ml of limewater 6. 2 delivery tubes 7. 1 test tube rack 8. 1 water bath set to 37°C 9. 2 pipettes 10. 3 measuring cylinders with a resolution of 1ml‚ ranging from 0-30ml. 11. 200 ml of water Hypothesis: The higher the concentration
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How Variations Of 5‚ 10‚ 15‚ 20‚ And 25 Squats Affects the Respiration Rate In 14 Year- Old Year 9 Boys. The human respiratory system is made up of the lungs and the passages that lead to them. Air is breathed into the lungs‚ and oxygen from the air passes into the blood‚ which carries it around the body. The waste product‚ carbon dioxide‚ is then passed from the blood into the lungs and is breathed out. This all happens with the immense help of oxygen‚ to maintain a functional human body. However
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the ruler will fall. Variables - which variables are you going to: Change? (Independent Variable) The Independent Variable in this Investigation is the reaction time. Measure? (Dependent variable) The Dependent Variable in this Investigation is how far the ruler falls. Keep the same? (Controlled variables) The Controlled Variables in this Investigation include; where the ruler starts; the position from where the ruler is dropped; the way the investigator holds the ruler; the equipment used
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this term can also refer to a rocket engine. Similarly‚ to most engines‚ rockets burn fuel‚ which then turns into hot gas. The engine then pushes the gas out the rocket’s back‚ allowing the projectile to move forward. It is important to investigate how to successfully launch rockets to serve for different purposes. For an example‚ NASA utilises rockets for various goals including launching satellites‚ sending probes to other worlds and scientific research (with smaller rockets). By understanding the
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Heart rate is an extremely important part of many people’s lives. It affects our personal health and how our body works. When the body exercises‚ the heart rate goes up and when the body is inactive or not being active the heart rate goes down. When the pulse is pumping fast‚ then that means work is being done. Having a high heart rate is good for the heart and the body. Obese people can use heart rate and exercise to change their life. Due to the amount of people that are obese‚ a good amount of
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the heart‚ it increases which makes the left ventricle expand and adapt to a different situation. Due to this‚ the heart can register a higher level of blood and eject it at a faster rate to all living cells and membranes. This increases the heart rate because the movement of blood is faster than the resting heart rate. When performing a strength training exercise‚ the muscles contract allowing blood vessels to pass in and out. This builds the pressure in the body as well as increases the amount of
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