List the three main groups of carbohydrates. The three main group of carbohydrates are monosaccharides‚ disaccharides‚ and polysaccharides 2. Play the animation of dehydration synthesis. What two monosaccarides did you start with? What
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ranging from poverty to drug abuse. One alarming factor that is rapidly exploding is childhood obesity. Alice Davies’ article‚ “‘Extra Large‚’ Please‚” which describe the alarming social problem of childhood obesity connected to the fast food industry in America today. Davies stated: “the number of American kids who are dangerously overweight has tripled. More than 16 percent of our children qualify as ‘obese’” (Davies). Although childhood obesity is a growing problem stemming from a terrible
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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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When the cell phone ban was made people were not fully aware that a cell phone could be the determining factor between life and death. As the September 11th attacks have taught us‚ cell phones have become the life lines for many Americans ("Should cell-phones be allowed in schools?"). During the attack on the World Trade Center many people used their cell phones to contact family members to speak their last words and to call people to help them out of the building. If it wasn’t for cell phones many
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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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Cell Theory - Biology Speech on Cell Theory. Cells are the "building blocks" of the body. A human is made of millions of cells‚ which are adapted for different functions. They are composed mainly of a cell membrane‚ cytoplasm‚ vacuole(s) and a nucleus. They are the foundations of all living organisms‚ making them probably cells extremely significant when it comes to biology. They are one of the foundations of biology itself. The Cell Theory is a theory that has been composed‚ changed and altered
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Ben Zaré 9MK Biology Investigation - Osmosis in Potato Cells 9/7/04 Section 1 Planning Aim What is the aim of your experiment? What do you want to find out? The aim of this experiment is to investigate how potato tissue changes when placed in sucrose solution of different concentrations. Therefore‚ I want to find out if and how osmosis differs‚ when the concentration is changed. Variables What is the variable you are going to change in the experiment?
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7-1‚ 7-2 Cell Structures and Function cell theory- all living things are composed of cells‚ cells are the basic units of structure and function in living things‚ new cells are produced from existing cells. prokaryote- smaller and simpler than eukaryotes‚ do not contain nuclei‚ are part of the Bacteria domain‚ are unicellular‚ are autotrophs or heterotrophs eukaryote- cells with nuclei and contain specialized structures called organells. All plants‚ animals and fungi are eukaryotes. Part of the
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6‚ 2012 Co-workers: Adelfa Masculino Date Performed: June 29‚ 2012 Farrah Belle Barredo Experiment 2 The Cell Membrane Abstract The boundary between any cell and its environment is the plasma membrane‚ composed of a matrix of phospholipid molecules along with a number of different kinds of proteins. Membranes have different properties and a variety of functions‚ in large part determined by the specific proteins within the membrane. This experiment is designed to determine the stress
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Stem Cell Controversy Stem cells were first isolated and cultured in November of 1998 and have been surrounded with much debate and controversy since day one. “Although the ethical debates have been mostly static and have closely mimicked the ethical debates over abortion‚ the political determinations concerning federal funding of stem cell research have gone through numerous evolutions in the years since the first hESCs were isolated and cultured” (Saltzberg 505). Research is currently being
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