Adjectives - Comparison - Exercise 1 Fill in the comparative and superlative forms of the adjectives Comparative Superlative 1 old __________ __________ 2 bad __________ __________ 3 difficult __________ __________ 4 large __________ __________ 5 good __________ __________ 6 big __________ __________ 7 easy __________ __________ 8 much __________ __________ 9 little __________ __________ 10 interesting __________ __________
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aim of this practical is to investigate the effect of exercise on heart rate and breathing rate. We will use a digital heart rate monitor strapped on our chest while we perform different levels of exercise. A digital watch is also provided which receives signals from the heart rate monitor and displays your current heart rate on the screen. To measure the breathing rate at different levels of exercise‚ we measure the breathing rate before physical activity by counting the number of breaths in 10 seconds
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The Effects of Caffeine on the Heart Rate of Daphnia This lab was designed to show how caffeine affected the heart rate of daphnia after exposing them to different concentrations of caffeine for ten minutes. Caffeine is a stimulant‚ which‚ in humans‚ causes heart rates and blood pressure to increase. Its effects range from mild alertness to heightened anxiety and body tension. We wanted to see if caffeine affected the daphnia’s heart rate in the same way. We filled three containers with three different
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The affect of psychological stress on the heart rate. Introduction: The human body is incredible machinery that can adjust to stressful situations and react in a “fight-or flight” manner by temporarily shutting off nonessential‚ at the moment‚ immune and digestive systems. When the body is ready for a challenge‚ heart rate increases‚ blood pressure rises and glucose production intensifies to supply large amounts of energy. These metabolic changes are caused by release of stress hormones (catecholamine
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Exploring Rates‚ Equilibrium‚ and Organic Chemistry Brandon Sher SCH 4U For: Ms. Merhai Due date: June 1st‚2013 Introduction: Organic chemistry. Two quantities one could measure with the presence of organic chemicals are chemical equilibrium and rate of reaction. Chemical equilibrium is the ratio between the forward and reverse process of a reaction. This is represented by the equation: K = products / reactants. When a reaction has reached equilibrium‚ the
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dramatic increase in obesity in the United States over the past 20 years. Obesity epidemic has affected every part of the world. When speaking about United States‚ more than 72 million adults are obese and there is not a single state that has an obesity rate less than 15 % (CDC Vitalsigns 2010). Among all Americans Obesity has been directly linked to hypertension‚ diabetes‚ cancer‚ depression and many other health problems. Each year‚ approximately 400.000 deaths result from obesity and its complications
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Chemestry Lab Rates of Reaction (Picture from: http://sciencespot.net/Pages/kdzchem.html) The rate of reaction is how fast or slow a reaction is completed. This is important for factories and chemists all over the world. What happenes during a reaction is atoms or molecules that collide and form new molecules. You can affect this rate of reaction with: temperature of reactants or suroundings‚ surface area of reactants‚ if there is a catalyst present‚ but in theis lab the concentration was changed
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The purpose of this lab was to investigate whether veins affect photosynthesis rate. It was predicted that having veins would decrease the rate because chloroplast might be less frequent due to the vascular tissue. For this experiment‚ 4 groups were set up: veins and no veins in CO2 solution‚ and veins and no veins in distilled water‚ the distilled water groups served as controls. These 4 groups were placed under a light bulb in order for photosynthesis to occur. No disks experience movement in the
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metabolic rate are investigated. Hypothesis: With the information given‚ we tested the effects of given hormones on the body by using virtual rats. We expect to see a greater metabolic rate for the normal rat as opposed to the thyroidectomized rat. The hypox rat is expected to have the lowest metabolic rate. Metabolic rate will increase once thyroxine is injected. TSH will increase the metabolic rate of all the rats with
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Title: Rate of Photosynthesis Introduction: Photosynthesis occurs in plants where the light energy changes to chemical energy. This process occurs in the chloroplast of the plant cell in order to have gas exchange in the organism. Purpose: To measure the effect of light intensity on the rate of photosynthesis in the leaf cells. Hypothesis: The higher the concentration of the sodium bicarbonate solution‚ the faster the leaf of the plant will rise to the surface of the water in the beaker‚ the
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