TRANSPIRATION: Investigation 11 Learning Objectives: To investigate the relationship among leaf surface area‚ number of stomata‚ and the rate of transpiration To design and conduct an experiment to explore other factors‚ including different environmental variables‚ on the rate of transpiration To investigate the relationship between the structure of vascular tissues (xylem and phloem) and their functions in transporting water and nutrients in plants Before doing this laboratory you should understand:
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on the filter paper. Caution should be used as the root tips are very fragile 5. Transfer one of the garlic root tips to the clean microscope slide. Cut about 2-3 mm from the rounded growing tip. Keep this growing tip and discard the rest. 6. Break up the root tip with the mounted needle (this is called maceration). Add one small drop of toluidine blue and leave to stain for 2 minutes 7. Cover with the cover slip and blot firmly with several layers of filter/ tissue paper and press gently to spread
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AP Biology Photosynthesis Lab Bethany Boyer Due 11/12/14 Lab Write-Up Questions First Experiment 1) The independent variable in this experiment was the presence of CO2 (carbon dioxide). The dependent variable was the speed at which the leaf disks started to float. 2) In the leaf tissue‚ the bicarbonate and light are combining to carry out photosynthesis. This will cause oxygen to collect in the leaf tissue‚ causing it to rise. 3) If we were to boil the leaf disks‚ the reaction would most likely
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Courtney Jablonowski Dr. Peterson Lab Report 1 June 17‚ 2012 Results The tooth formula is a shorthand technique that biologist use to keep track of the teeth on a particular jaw. The formula consisted of two lines‚ top jaw and bottom jaw‚ which were used to count how many incisors‚ canines‚ premolars‚ and molar teeth a species had. Species A‚ Odocoileus virginiaus (white-tailed deer)‚ had a tooth formula of 0033/3133. On the top jaw‚ the deer had zero incisor and canine teeth but have
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to the rest of the plant. This process is able to carry out due to bulk flow which happens because of turgor pressure. Water is eventually lost by a process known as transpiration‚ where water is evaporated
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Biology 20 IB Design Lab Does increasing or decreasing the ph level of a 3% concentration H2O2 (l) solution affect the amount of oxygen released between 15.0ml of the solution and a 5g sample of liver? The reaction is measured by the difference in mass of a balloon that is used to capture the amount of gas released by the catalase enzyme found in liver reacting with a basified 3% H2O2 (l) and an acidified 3% H2O2 (l) . Chemical reactions occur when two or more molecules interact and the molecules
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How to Write a Lab Report Lab reports are formal papers that describe and analyze lab experiments. They follow a very specific format. If you study this paper carefully and follow its directions‚ you will find that these papers are not at all difficult and can have a positive impact on your Biology grade. Paper formatting: The paper should be typed and double spaced. Use a standard 12 point font (do not use cute fonts or colored paper!). Except for the title and abstract – each section
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Period 1 1/14/12 Mitosis Lab Write-Up Purpose: The purpose of this lab is to understand the phases of mitosis through a hands on experience and not just textbook information. The objective is to visually determine each phase through a microscope with a clear understanding of what is happening. With this knowledge and this visual a picture is to be drawn as descriptive as possible for each phase. Materials: The materials needed are; 1) Microscope 2) A slide containing plant cells 3) Blank paper
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John Leone Lab Partner(s) Ethan Davis & Ryan Hanna Date: 12/10/14 Instructor: Dr. Chuckran Period: H Plants and Animal Cells Abstract: In this lab‚ you will find out how plant and animal cells are alike and how they are different. The onion elodea cells were both plants‚ so they had a cell wall. The cheek cells were animal cells‚ so they did not have a cell wall. Eukaryotic cells contain structures called organelles that carry out life processes. Eukaryotic cells can be classified by the types of organelles they contain
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Vaishnavi Kothapalli Mrs. Manning Honors Biology 30 November 2012 TITLE: The Reaction Rate of Catalase in Various Concentrations of Hydrogen Peroxide QUESTION: How long does the catalase take to float to the top of a cup filled with different amounts of hydrogen peroxide concentration? PREDICTION: A prediction that can be made for this experiment is that the higher the concentration‚ the faster time it takes the catalase to react with the solution. As the concentration increases from
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