Phospholipid

The central nervous system, which is responsible for coordinating response to stimuli in all Eumatozoans and processing all the information obtained from all the distinct parts of the body, is made up two types of specialised cells known as the nerve cells (neurons) and the glial cells (support cells). A neuron is defined by Martini as a “cell in neural tissue that is specialized for intercellular communication through changes in membrane potential and synaptic connections” [5] where as a glial…

2. Synthetic surfactants used in pharmaceuticals and their properties. 2.1 Classification of surface active agents. The widely used synthethic surfactants in pharmaceuticals are classifieds as according on their surface charges. 1.Anionic surfactants:sodium alkyl sulfonates .SDS,SLS. 2.Cationic surfactants:Quaternary ammonium chlorides (quats),pyridinium salts . 3.Zwetterionic (amphoteric) surfactants:phospholipids- Phosphatidylcholine (Lecithin). 4.Nonionic surfactants: spans( esters of…

This paper will refer to the domain of Archaea. The archaea are single-celled prokaryotes that were classified in the bacteria domain naming them the Archaeabacteria. Until just recently the scientific community decided that these special creatures belonged in their very own domain. The archaea resembled the eukaryotes more than the bacteria even though they were still a prokaryotic organism. So these micro-organisms had to be moved into its own domain. These organisms are what many…

Energy Flow and Nutrient Cycling in the Epipelagic Zone of the Ocean Introduction: “Energy Flow’’ is an environmental process that describes the flow of energy through a food chain and attempts to ascertain the relative importance of various individual component species and feeding relationships within a particular ecosystem. “Energy” itself is defined as the ability to do work: All living plants and animals expend energy in their environment. All three laws of thermodynamics apply,…

significant change in plasma glucose and serum cortisol concentrations of the sheep that were administered insulin which validates the hypothesis of the experiment. Glucose does not readily penetrate cell membranes as cell membranes are composed of phospholipids and glucose is hydrophilic and lipophobic due to the hydroxyl groups (Klein, 2013). Insulin, the major hormone that controls plasma glucose concentrations, increases the permeability of the liver, muscle and adipose or fat cell…

group ________________ 3. ____ E. glycerol ________________ 4. ____ C. fatty acids ________________ 5. ____ F. hydrophilic region ________________ 6. ____ B. hydrophobic region ________________ 4-5: What molecule is this? Phospholipid Phosphatidylcholine Activity 5 5-1: The illustration below shows an enzyme reaction. Using the choices below, identify the molecules in the illustration. Insert letter of correct answer into space provided. Chose only one answer…

is known of the cause of MS, researchers believe that Multiple Sclerosis causes the body’s immune system to attack the myelin sheath. The myelin sheaths are an insulating coating around the nerve cells, consisting of a mixture of proteins and phospholipids, which help to increase the speed at which nerve impulses are conducted. As the myelin degrades the communication between the nerve cells in the central nervous system become muddled causing some parts of the body not to receive instructions…

malabsorption. Normally, three steps are involved in absorption: luminal processing, intestinal mucosal absorption and transport into circulation1; failure at any one of these steps can lead to malabsorption. Fat Malabsorption Hydrophobicity of phospholipids, triglycerides and cholesterol creates a challenge due to their…

In bioturbation literature, it is often assumed that microbially-mediated processes have been affected by bioturbation, with no analysis of the microbial community (Kristensen, 1984, Kristensen, 1985, Kristensen and Blackburn, 1987, Gilbert et al., 1998, Christensen et al., 2000, Michaud et al., 2006, Bonaglia et al., 2014). For example, variations in microbial nutrient remineralisation (Renz and Forster, 2013), and declines in sediment functioning under reduced pH conditions (Widdicombe and…

Environmental effects of DDT DichloroDiphenylTrichloroethane (DDT) is an insecticide that was used to kill mosquitos and other insects between 1939 and 1972. It is a colorless, tasteless, crystal like and almost odorless chemical. DDT, C14H9Cl5 (Figure 1), was discovered by the chemist Zeidler in 1874 (DDT, 2000). In 1939, Paul Herman Müller (a chemist), discovered the insecticidal properties of DDT. Paul was looking for a pesticide so powerful that even if an insect flew over it it would die.…