Science 9-Biology Observing Cell Division Lab Purpose: To use the microscope to observe and sketch plant cells and animal cells in various stages of the cell cycle. Equipment and Materials: Compound Microscope Laptops Prepared Slide of Onion (Allium) Root Tips Prepared Slide of Whitefish Mitosis BC Science 9 Text pg. 162-163 Part 1-Plant Cells Procedure: 1. Take a prepared slide of an onion tip root and observe it under low power
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The effect of temperature on beet cell membranes Introduction: A cell membrane of a beet (Beta Vulgaris) is made up of a phospholipid bilayer with embedded proteins and cholesterols. The membrane is responsible for organizing the cell‚ protecting it from the exterior environment‚ as well as responsible for regulating what goes in and out of the cell though it’s protein channels and “selectively permeable” bilayer. (Campbell‚ Reece‚ Taylor & Simon‚ 2006‚ p. 79-80) When this membrane is damaged
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sure to answer the following reflection questions in the conclusion of your lab report: 1. How much did the egg change in size? (answer should be in centimeter) The egg’s size changed by 3 centimeters. 2. Was your hypothesis correct? Why or why not? My hypothesis proved to be correct because the egg’s shell did‚ in fact‚ deteriorate. 3. Evaluate the lab and data collected. What type of transport occurred in this lab? Explain your answer‚ including evidence from your experiment to support
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 09/20/11 page 1 Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse through the 20 MWCO membrane? Your answer : c. No‚ not at all. Predict Question 2: Recall that glucose is a monosaccharide‚ albumin is a protein with 607 amino acids‚ and
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Lab #5: Refraction of Light Theory: Refraction can be defined as the bending of a wave when it enters a medium which causes it to have some reduced speed. In terms of light‚ refraction occurs when the ray passes through some medium which slows its speed; such as water or glass. In this instance the ray tends to bend towards the normal of the medium. The amount of bending or refraction which occurs can be calculated using Snell’s Law (). Objective: To measure the index of refraction of Lucite
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SPECILAIZATION : Human resource & Finance DEGREE : Master of Business Administration ADDRESS FOR COMMUNICATION: N.GURUPRASAD * 4a/9‚ Arumuga Gounder Street Mobile no: 9043733229 * Rathinapuri
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The cell theory‚ or cell doctrine‚ states that all organisms are composed of similar units of organization‚ called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology. The idea predates other great paradigms of biology including Darwin’s theory of evolution (1859)‚ Mendel’s laws of inheritance (1865)‚ and the establishment of comparative biochemistry (1940). First Cells Seen in Cork While the invention of the
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Stem Cell Stem cell therapy and stem cell research have been a hot topic over the last several years‚ giving rise to much debate. Many of us may have a general understanding of the controversy‚ but we are unaware of the specific issues surrounding stem cell therapy and its research. Stem cell therapy and stem cell research have been a hot topic over the last several years‚ giving rise to much debate. Many of us may have a general understanding of the controversy‚ but we may be unaware of
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You will submit the completed chart and the reflection to your instructor. Human vs.________|# of differences in the amino acid sequence| Rhesus monkey|1| Horse|3| Donkey|3| Common zebra|11| Pig‚ cow‚ sheep|10| Dog|9| Gray whale|10| Rabbit|8| Kangaroo|10| Chicken‚ turkey|12| Penguin|12| Pekin duck|14| Snapping turtle|18| Rattlesnake|22| Bullfrog|26| Tuna|29| Screwfly fly|32| Silkworm moth|36| Tomato horn worm|37| Wheat|37| Rice|38| Baker’s Yeast|42| Candida Yeast|48| Neurospora|50|
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Evaluation/Worksheet Answer the following questions in the space provided. Remember to use complete sentences to demonstrate comprehension and understanding. Based on the labs you completed‚ answer the following questions: 1. Which solute(s) were able to diffuse into the right beaker from the left beaker? Which did not? Answer: The solute(s) that were able to diffuse Na+/Cl- ‚ Urea‚ Glucose. The solute that didn’t was Albumin. 2. Explain the relationship between the rate of diffusion
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