Public Health Essay Example | Topics and Well Written Essays - 1250 words - 3

Public Health - Essay Example surroundings and circumstances determine the health of people. Some of the factors used in the determination of health include genetic factors, educational level, income level and relationship with families and friends. The main determinants of health include social and economic environment, physical environment and the individual’s behaviors and characters. The increase in the income earning may increase the living standards; however, in some case people may fail to control their eating habits and end up acquiring diseases such as diabetes among others. The great gap between the gap between poor and rich increases the differences in health conditions. On the other hand, low education levels also contribute to the development of disease in the community. For instance, the lowly educated people may not be able to understand which kind of food to take at a given time. It becomes very difficult to create a harmonized healthy condition in the entire society because of the variatio n in the social factors (Kindig, 2015). In addition, people have different views and opinion regarding various health factors in the society. For example, some people may support abortion while other opposes the act and considers it an evil act. Such differences influence the efforts made to improve the population health.

Biological Module Essay Example | Topics and Well Written Essays - 2750 words

Biological Module - Essay Example The relationship lead to the permanent association and integration leading to eventual evolution of eukaryotes. Membranes that may be double or single layered line cell organelles. The Mitochondria, chloroplast and the nucleus (not strictly an organelle) have double layered membranes, while the Lysosomes, Golgi apparati, vacuoles and so on have a single membrane. The Ribosomes are non-membranous structures. The structural representation in the fluid mosaic model of the plasma membrane is universal in all living cells (plants & animals) and consists of two layers of phospholipids (lipids attached to a phosphate unit, proteins that dynamically move about the membrane and a small amount of glycoproteins (glucose bonded to proteins). The lipid molecules are "amphiphilic," having a hydrophilic (water loving) portion facing outside and a hydrophobic (water shunning) lipid portion turned inside. (Campbells' Biology Chapter 8; Dalton.M Chapter2/membrane/html.) Primarily, there are10 different types of lipids reported in cell membranes with different types of cells/organelles having differing percentage of each lipid, protein, and carbohydrate. They are: (1)Cholesterol, (2)Glycolipids, (3) Phosphatidylcholine, (4)Sphingomyelin, (5)Phosphatidylethnolamine, (6)Phosphatydilinositol, (7)Phosphatidylserine, (8) Phosphatidylglycerol, (9)Diphosphatidylglycerol (Cardiolipin), (10)Phosphatidic acid (Dalton.M Chapter2/membrane/html). Proteins in the cell membrane may have limited movement (being bound to the cell's exoskeleton or other membrane structures) or move freely if unbound (Campbells' Biology Chapter 8; Cellmembranes.html 10 Aug. 2003) . These proteins could be in the hydrophobic (integral proteins) or in the hydrophilic (peripheral proteins) regions. The proteins vary in structure and function but have distinct directional orientation (Campbells' Biology Chapter 8). Differential permeability The membranes are responsible for maintaining an almost constant cell or organelle environment. For instance the pH with the Lysosome is maintained at 5. This has been made possible by the selective permeability of the membrane that allows ready entry of glucose, amino acids and lipids and prevents the exit of metabolic intermediates while allowing external passage of wastes. The membranes' hydrophobic portions are typically impermeable to water-soluble materials like glucose, amino