Lipid

The cell membrane is the boundary barrier for every cell, it selectively allows organic molecules and substances in and out of the cells. During this lab we were specifically looking at the flow of water across the cell membrane in sheep blood cells, Elodea (waterweed) cells, and brewer’s yeast. We also looked at what damage could be caused by physical and chemical stress to the cell membrane by examining beetroot cells that were exposed to a variety of temperature treatments. Water molecules are

Introduction This experiment was done to test the affect of lipid content on cupcakes using four different types of milk. In this experiment, the height was expected to change due to whether or not the fat content (lipids) appeared to be heavier in one type of milk opposed to the other. Although the lipid content was tested on cupcakes, the results were still surprisingly existent. The height of the cupcakes were altered due to what was taken from them using a different ingredient then what was

Atherosclerosis Atherosclerosis is the underlying cause of coronary heart disease which can affect any artery in the body. Atherosclerosis is essentially the narrowing of arteries due to excessive build up of cholesterol-rich lipids known as plaque (Insull 2009). Once the arteries become narrow, the flow of blood will be constricted, resulting in the reduction of the nutrients and oxygen that are able to reach the heart. As a consequence, the heart becomes increasingly hypoxic resulting in ineffective

ABSTRACT: The purpose of this lab is to detect carbohydrates, proteins, lipids and nucleic acids in different compounds by performing several different tests, such as Benedict’s test, Iodine test for starch, Biuret test for protein, Sudan IV color test for lipids, grease spot test and the Dische Diphenylamine Test. Most of the chemical compounds that are present in living organisms consist of covalently bonded carbon atoms. These compounds are organic compounds because they are either produced

Carbohydrates, Proteins, lipids, and nucleic Acid Lab Exercise 6 Date: 9/17/12 Bio 102-11 Purpose the purpose of this experiment was to perform test to detect the presence of carbohydrates, proteins, lipids, and nucleic acids. Explain the importance of a positive and a negative control in biochemical test. Use biochemical test to identify an unknown compound. Background Most organic compounds in living organisms are carbohydrates, proteins, lipids, and nucleic acids they are called macromolecules

The cell membrane can be seen as the doorway in and out of a cell. The functions of the cell membrane are to help in the active and passive transport of substances across it, provides (to a certain degree) a mechanical support to the cell, helps maintain the cell’s shape and can act as a receptor for certain extracellular materials(eg. Hormaones) and thus maintains the specificity of the particular cell type. Structure: The structure of the membrane consists of a phospholipid

There are four types of biomolecules, carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are large chains of sugar found in food and living tissues. This includes sugars, starch, and cellulose. They have the same ratio of hydrogen and oxygen that water has, 2:1. They are broken down to release energy in the animal body. Lipids are any organic compounds that are fatty acids and don’t dissolve in water but do in organic solvents. Fatty acids can be found in natural oils, waxes, and steroids

Discussion The speed and distance of a garden snail, or Helix aspersa, depends on multiple factors however, a main factor is the surface they are on. In our experiment, the snails moved much quicker and farther on the Rite-in-Rain paper when compared to sandpaper. Throughout their lives, snails will be traveling on different types of surfaces for example, snails will slide through smooth, gentle surfaces such as plant leaves and they will push through course and permeable surfaces such as wood

Discussion: For each half of the membrane, only 1 unique band should appear in each sample lane, and the band should be consistent with other lanes as well. The reason is that a primary antibody can only bind to a specific protein. If that specific protein is present in the sample, then a band should appear. In this experiment, goat anti-rabbit HRP was used to localize the site of the primary antibody. This secondary antibody was used for both halves of the membrane, because both primary antibodies

Determination of biomass, protein, carbohydrate and lipid For the estimation of dry biomass, 2 ml culture was removed on 10th day from each flask, and absorbance measured at 750 nm spectrophotometrically (Shimadzu UV mini 1601, Japan) and converted to dry biomass using the regression equation Dry biomass (mg ml-1) = Abs750+0.0378/0.0009 (R2 =0.995; P< 0.001) based on a standard curve constructed depending on Abs 750 vs dry biomass. To determine dry biomass 10 ml microalgal culture with known