Title: Objective: The objective of this experiment is to see the stages of mitosis in a garlic root tip. Apparatus: Garlic roots 5 Molar hydrochloric acid Toluidine blue stain 2 watch glasses or small sample tubes Hollow glass blocks Pipettes Microscope slides and cover slips Pair of fine forceps Filter paper Microscope with magnifications of x100 and x400 Stop watch Method: 1. Firstly cut out about 1cm from several root tips of growing garlic roots. Choose root tips which are white and have
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method‚ the importance of collecting and graphing data‚ and coming to conclusions? Hypothesis: 1. It is believed an experiment to illustrate the steps of scientific methodology can be designed to include observations‚ problem statement questions‚ hypothesis which are testable and falsifiable‚ proper experiment design‚ data and graphing‚ and conclusions based on data. Experiment: Materials: * Mealworm * White paper * Metric Rulers * Pencil * String *
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The purpose of this experiment is to identify substances within a sample (in this case‚ the color dyes) through the use of chromatography. Utilizing the Rf value ‚ we can observe the ratio of movement certain substances make. The “movement” is determined by polarity‚ solubility‚ and the choice of solvent to be used. Each combination will result in a unique ratio‚ thus allowing us to compare unknown samples and discover their identity. The Rf value is essentially the rate the dotted sample will
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pollutant directly or a subsequent problem that arises from the pollutant in question. I will be discussing the causes and effects of the air pollutant CO2 (Carbon Dioxide)‚ what can be done to prevent this pollutant affecting our planet and also what measures have already been put in place to reduce the impact of these pollutants. CO2 is a greenhouse gas‚ a greenhouse gas is characterised as being a gas that absorbs infrared radiation and contributes to the greenhouse effect. We need the
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Acids & Bases Lab Write Up Lab 2 Introduction There are many acids and bases all around us. An acid is known as a hydrogen ion donor (H¯)‚ and a base is known as a hydrogen ion acceptor (H⁺). Acids and bases are represented by the pH scale. The pH scale shows the strength that an acid or base has. This scale ranges from 0-14‚ with 0-6 being acids‚ 8-14 being bases‚ and 7 being neutral‚ such as water. This is defined as the negative log of an ion atom (pH=
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This experiment focuses on the effect of light intensity on the rate of photosynthesis. In simple terms this refers to how the production rate of the products of photosynthesis (oxygen and glucose) will be affected by a light source at different distances. The hypothesis states that “If there is a higher light intensity‚ then more oxygen and glucose molecules will be produced‚ and the rate of photosynthesis will increase.” This hypothesis was accepted. This was determined by counting the number of
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IB Friction Lab Write Up 3. The slope of my graph represents the constant value for myu as the Normal Force and the force of friction are constantly changing. 4. The kinetic slope is the biggest by far because it represents the less coefficient of friction it has to overcome to move easier. 5. According to my data table‚ an increase in weight always‚ without fail‚ creates a greater force of friction. 6. An increase in weight does not affect the coefficient of friction by also increasing
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Bacteria Lab Write-Up Jianna Liu P8 Purpose: The purpose of this lab is to find out which substance‚ alcohol‚ antibacterial soap‚ water‚ or hydrogen peroxide‚ is the best at preventing the growth of bacteria. Hypothesis: Antibacterial soap will be the best because soap is a substance that people use to wash their hands because it takes away the germs. Even the name‚ antibacterial soap‚ suggests that it fights off bacteria. Hydrogen peroxide is second because it is used
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Photosynthesis is a process through which plants and some certain types of bacteria get energy from the sun’s UV-rays and use it to create and store sugar that is transformed into ATP by cellular respiration later on in the process. In plants‚ this process takes place in chloroplasts‚ which concentrate in the mesophyll cells‚ with the help of chlorophyll‚ the green pigment‚ which is directly involved in photosynthesis. It is important to understand that we see leaves green simply because the green
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4Car carried out real-world fuel economy tests on eight low-emissions cars and all failed to meet the official figures. Three cars were as much as 10mpg short of the published fuel consumption rates. The tests examined the Golf Bluemotion‚ Skoda Fabia Greenline‚ Mini Cooper D‚ Honda Civic Hybrid‚ Toyota Aygo‚ Ford Focus Econetic‚ Fiat 500 1.2‚ BMW 118d‚ all of which are regarded as low emissions/fuel economy models. The Golf Bluemotion got closest to its official figures in the 4Car tests
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