Cells and Tissues 1. Which of the following is NOT a membranous organelle? a. Lysosomes b. Peroxisomes c. Mitochondria d. Ribosomes e. Endoplasmic reticulum Answer: d 2. Which organelle contains digestive enzymes? a. Rough endoplasmic reticulum b. Smooth endoplasmic reticulum c. Lysosome d. Golgi apparatus e. Mitochondria Answer: c Lysosomes are membrane bound sacs of digestive enzymes. They are nicknamed "suicide sacs". 3. Which organelle is considered the powerhouse
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Cell Membrane Permeability and Osmosis Experiment 3 Objectives: To demonstrate the mechanism involved in Osmosis; To demonstrate the tonicity of solutions by subjecting the cells to different concentration of solute. To view‚ under the microscope‚ any change in the shape and volume of the cells after subjecting them to different concentrations of solutes; To demonstrate the permeability of cell membrane by subjecting the cells to different solutes; To demonstrate the mechanism involved in
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Guadalupe October 29‚ 2012 The effect of temperature on beet cell membranes Introduction: Cell membrane is the plasma like substance that separates different organelles and molecules within an organism. The cell membranes vital function is to permit passage of protein and enzymes through their wall. Red beets‚ also known as Beta Vulgaris has a red pigment that is located in its large central vacuoles. It is my hypothesis that if the cell membrane is to experience extreme temperatures‚ then it’s
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Stem Cell Research and its Implications LAS 432 Perry Furgason Shannon Johnson Kelly Hanson Kimberly Houser 10/05/2014 Introduction Stem cells are unspecialized cells that have the ability through cell division to become specialized cells. These cells possess regenerative properties for longer periods of time than other cells. And‚ in certain conditions can be induced to become tissue or organ specific cells. By seeking to understand their regenerative process‚ scientists can treat
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GUIDELINES Title of Lab: Effects of Temperature and Solvents on the Cell Membrane Developers of Lab: Adapted by James Kirby JD726‚ Jennifer Mortellaro JD449‚ and James Prockup JD575 from a publication by the Department of Biological Sciences at Western Michigan University‚ Kalamazoo‚ MI Overview of Lab: Description: The purpose of this lab is to illustrate the effects that temperature and solvents have on the cell membrane. Red beet tissue contains large amounts of betacyanin
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Planning AIM Beetroot cells contain a red pigment‚ which is stored in the cell vacuole and a vacuole membrane to prevent this leaking out of the cell surrounds it. The outer of the cell is also surrounded by a membrane‚ which again helps contain the pigment inside the cell. In this experiment I aim to find out the relationship between the leakage of red pigment from a beetroot cell and the surface area. To do this successfully I will need to alter the surface area of the beetroot cells accurately and then
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what a stem cell is. There is a lack of health literacy in our nation. So the public can’t really get into this dialogue because they don’t understand the complexity of stem cells‚ not the faith based approach‚ not the ideological or political‚ but the science behind stem cells.” Stem cells have the unique ability to transform themselves into whatever type of cells that are needed. They can be the cure for cancer‚ repairing tissue and treating diseases. As we discuss this topic of stem cell research
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TEMPERATURE AND SDS CONCENTRATION ON THE STRUCTURE OF BEETROOT CELL MEMBRANES. Introduction Cellular Membranes or cell membranes are biological membranes that separate the interior of a cell from the outside environment. Cell membranes are selectively permeable to ions and some molecules and control the movement of substances in and out of the cell. (Danyk‚ 2013/14) Cell membranes separate and organize chemicals and reactions within cells by allowing selective passage of materials across their
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Purpose: Examine the role of the cell membrane in the cell by disrupting its function using temperature (Biology 107 Laboratory Manual 2014). This will improve the general understanding of optimal growing temperatures and the breakdown of the cell membrane Procedure: Betacyanin solution of a known concentration was diluted to create a dilution series‚ then placed in a spectrophotometer set to 525 nm. The absorbance of the dilution was used to create a standard curve for betacyanin. Discs of living
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Cory King ENG 120 Sec. 02 Spring 2002 March 15‚ 2002 Cloning‚ and Stem Cell Research Technology has advanced a great deal within the past few years. We have learned so much information about animal’s genes and what can be done with them. However‚ with this new information brings new questions and arguments. So far‚ scientists have successfully cloned a sheep‚ a monkey‚ a bull‚ and are working on an endangered breed of ox‚ of course cloning animals and conducting research on those animals does
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