Destiny Thomas Biology October 19th 2012 Period: 3rd Destiny Thomas October 19th 2012 Biology Period: 3rd Introduction In our experiment we used only the red colored life savers. They all had about the same mass. We used 9 life savers. In our experiment we had to dissolve our life savers. The concept of dissolving is to place the
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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 the description of the urine is described. Terminologies like slightly nutty‚ sweet/ fruity or pungent can be used
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Shalacia Gilmore Fall 2012 BIO 1107 Natural Selection Lab INTRODUCTION In the 1850s‚ two scientists by the name of Charles Darwin and Alfred Russell Wallace composed the theory of evolution by natural selection. (1) Darwin characterized several claims needed for natural selection to happen‚ including heritable variation within the population‚ and the presence of more individuals than the environment can support. They also discovered that certain environments favored certain traits. These
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Protocol for Lab 5 – Aerobic Respiration Part 1 Isolation of Mitochondria from Cauliflower - Weigh 50g of rosettes cut from fresh cauliflower head. - Cut rosettes and place it on ice - Prepare juice extractor by placing ice and an empty 150 ml beaker into the right compartment. - Collect pulp from left compartment and record total volume of the extract. Approx. 20ml - Filter the pulp using six layered cheese cloth and collect it in a beaker sitting on ice. - Place two 50 ml test tubes
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THE CHEMICAL CONSTITUENTS OF LIVING MATTER Relevant IB topic: T3 Time: 2 hours BACKGROUND The principal chemical constituents of living matter are: water‚ mineral salts‚ organic compounds such as carbohydrates‚ proteins‚ lipids‚ nucleic acids. In this exercise we shall concentrate on carbohydrates‚ lipids‚ proteins‚ and we shall estimate the concentration of Vitamin C‚ an organic compound‚ in a solution‚ by the
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Objective: To find out the food substance in food sample X‚Y and Z. Biological Principle: Test for lipids using the grease spot test Test for glucose using Clinistix paper Test for reducing sugars using Benedict’s test Test for starch using the iodine test Test for proteins using Albustix paper Test for vitamin C using DCPIP solution A control using distilled water instead of the sample should be included. Independent: different types of food samples Dependent: different types of food
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Name: Siti Nur Amalina binti Mohamad Sukri Class: M12E Title: Cell Respiration and Aquatic Animal Aim: To investigate the effect of a change in the temperature of water on the respiration rate of a goldfish. Research question: Does a change in temperature of water affect the respiration rate of a goldfish? Introduction: “The goldfish is a domesticated subspecies of a carp like fish called Carassius auratus. Goldfish are usually kept as pets‚ feeding on fish food‚ algae‚ plankton and other
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follows; 6H₂O + 6CO₂ C₆H₁₂O₆ + 6O₂1 There are four variables that affect the rate of photosynthesis; light intensity‚ temperature‚ CO₂ and water.2 However‚ is it possible to count in the colour of light‚ too‚ which I am going to investigate in this lab. Since the photosynthesis takes place in chloroplasts that has chlorophyll‚ the rate of photosynthesis can be affected by different colours of light‚ since the absorption of light changes within different colours. Research Question: What colour of
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Iodine is a test for starch while Benedict’s solution is a test for reducing sugars. When solution A is tested by benidicts test‚ the clear blue solution changed to a little reddish and brick red precipitate is formed.this result show that solution A is a reducing sugar. When carried out iodine test with solution A‚ the colourless solution remain unchanged . this tell us that starch is absent is solution A. When solution B is tested with Benedicts test‚ the clear blue solution remain unchanged‚ we
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11 ST Revision i) Multiply the following numbers and express in terms of a x 10k where 1 ≤a ≤ 10 and k ϵ Z: 3.2 x 104 5.6 x 10-2 ii) Add them and multiply by four. iii) Factorise x2 – 49 iv) Factorise 16x2 - 9 v) Factorise x2 – 7x + 12 vi) Solve x2 -7x + 12 = 0 vii) The first term of an arithmetic sequence is 8 and the common difference is 7. The nth term is 393. Find the value of n. viii) A geometric sequence has first term 2 and third term 32. Find the common Ratio. ix) Find
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