comparing with the colour of standard solution which was prepared in Test tube1‚Test tube 2‚Test tube 3‚Test tube 4‚Test tube 5 and Test tube 6. Constant variables : 1.The number of drops of indicators which was put in the unknown solutions and standard solutions 2.Volume of water filled in the 50.0ml measuring cylinder 3.Temperature of deionised water 4.Type of indicators used Procedure 1.Six test tubes having a capacity of greater than 10mL was washed and labelled
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presence of abnormal components or normal components in abnormal quantities present in the urine. APPARATUS : 1) Test tubes 2) Boiling water bath 3) Microscope 4) Slides and cover slips 5) Pasteur pipettes MATERIALS: 1) pH test strips 2) Benedict’s reagent PROCEDURES: Collect the urine samples in a container. Make sure to not spill anywhere in the lab. Complete the tests and all results/ observation are in a proper table. (A) Observation of urine 1) The urine is sniffed and
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Enzymes Lab Report Inroduction In this lab we explore an enzymes activity and how it can be affected by changes to its environment. An enzyme is a protein and is a catalyst to chemical reactions. It helps accelerate reactions by lowering the activation energy‚ which is needed for reactions in cells to progress at a higher rate. Activation energy is the minimum amount of energy needed for a chemical reaction to occur‚ yielding products from a given set of reactants. (Unit 7: Enzymes lab) Products
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animal though? In this experiment we are using lab mice‚ Mus musculus‚ to see if the introduction of a predator scent (fox urine) increases‚ decreases‚ or has no effect on the metabolic rate within them. We will calculate the mass specific metabolic rate and use a t-test to determine if there is a significant change in metabolic rate when the mouse is exposed to the predator urine and when it is not exposed. With these mice being born and raised in a lab‚ the fox urine should have no effect on the metabolic
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which are unaware to us and act on visceral organs of the body‚ whereas somatic reflexes involve skeletal muscle stimulation. Both types of reflexes are put into effect via the nervous system. (1) The Patellar reflex‚ or Knee-Jerk reflex‚ is used to test the nervous tissue in the spinal cord from L2-L4. The patellar reflex is known as a “reflex arc”. It is a negative feedback circuit that is made of three components. The first is a sensory‚ or afferent neuron which takes in information from a sensory
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CardioLab Report Full Name || Date | 01/02/2011 | Use this document to report your findings from the CardioLab Exploration Experiment. The lab report consists of three sections: Data‚ Exploration‚ and Lab Summary. * Data: copy any data‚ graphs‚ charts‚ or notes that you have saved in your CardioLab online notebook into this section. * Exploration: Answer the questions. The questions in the Exploration section are the same questions in your CardioLab instructions. * Lab Summary:
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(Anonymous 2011). If someone told you that they knew of a weight loss pill that actually works‚ would you consider it? A new study has proven that Carb Cutter pills are effective at preventing amylase‚ an enzyme that breaks down starch‚ from digesting starch. This then prevents starch from converting into glucose and then to body fat. The carbs that aren’t absorbed then pass through the digestive tract and are excreted. From what we hear‚ the pill sounds like it will do wonders‚ but similar studies believe
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not exist (Lab Manual 3 pg. 1). They help in many different ways that are useful to the body of living organisms. Enzyme are used to speed up chemical reactions (Lab Manual 3 pg. 1). Through this process‚ they are considered very unique because they are not altered or consumed within the reaction (Lab Manual 3 pg. 1). This is why enzymes are considered biological catalysts. They also do not alter the equilibrium of a chemical reaction nor the amount of free energy that is released (Lab Manual 3 pg
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Ketchup Lab Report Problem: People visiting fast food restaurants complained that ketchup was dripping onto their fingers and clothes. What could we do to insure that the ketchup will not drop all over the customers? Hypothesis: If I put one ketchup packet in a hotter bath then it will move faster down the styrofoam plate. Independent Variable: The temperature Dependent Variable: The viscosity of the ketchup’s “runniness” Constants: The type of ketchup
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Catalase Lab Purpose: To observe the effects of hydrogen peroxide on living tissue and non-living materials‚ showing the presence or absence of catalase as observed by the presences of bubbles. Hypothesis: If we pour H2O2 on certain substances‚ the catalase will break down and bubbles will appear at the surface. Data table: Name | Time | Observation | Raw Potato | 1 min. 30 sec. | Slow reaction‚ barley any bubbles. | Raw Liver | 5 min. 30 sec. | Extremely fast reaction‚ very foamy‚ Big
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