Biological pigment

reported in the literature in which patients presented with dyspeptic symptoms. Histologically, pigments are deposited in the lysosomes of macrophages in the lamina propria(10). The pigments mostly consist of iron, but small amounts of calcium, aluminum, potassium, magnesium, sulfur, silicon and silver have also been detected. It has been suggested that these trace elements are probably derived from the biological milieu and/or other drugs and/or food…

Society builds many things that people begin to render as true. One of these social construction is the development of race. Race is socially constructed not biological. Race is a socially constructed category of people who share biologically transmitted traits that member of society consider important. Race is a social thing not biological basis. Here is why. Race is socially constructed and it was created based on people’s physical attributes. For example people are categorized on skin color,…

Texts studied in tandem may share common ideas, values and concerns, whilst the paradigms of their individual context shape representation and meaning. A comparison of texts allows for a deeper understanding of the social and cultural commentary offered by their creators. The speculative fiction text The Handmaid’s Tale(1985) written by Margaret Atwood incorporates the 1980s context of different cultural and political ideologies, whilst the revolutionary biotechnology of the 1990s moulds the…

of covalent bond that’s boiling point is awfully low, therefore when exposed to high temperatures the bond is easily disrupted. When looking at the data it is evident that the vacuoles were damaged and leaked out into the cell membrane causing the pigment betacyanin to leak out and diffuse out of the cell into the water solution. The diffusion can be supported by the concentration gradient law in which a substance will move from a place with high concentration to lower…

thermometers, barometers and the other scientific instruments. On a biological role mercury has no role but is present in the environment. During our daily lives we intake less than 0.01 milligrams, and his we can cope with easily. However, in much higher doses it is toxic and one form of mercury – methylmercury – is particularly dangerous. It can accumulate in the flesh…

Defining ‘race’, particularly in its biological and/or social aspects, leave uncertainty among many, which has been a continuous issue overtime. Some of us talk about race all the time in our society, and some of us don’t. But only a few really take the time to think what ‘race’ actually is, more importantly to distinguish right from wrong, what ‘race’ actually is not. While race as a concept has contributed to the development of biological science, it is not biological; rather a social…

The purpose of the Light, Color, and Solutions experiment was to determine how to use a spectrophotometer, understand the relationship between a solution’s visible color and its color absorption, and to derive, understand, and use Beer’s Law. Some background information that would be helpful included that the color of a solution was determined both by the colors it absorbed as well as the colors it transmitted. For example, if a solution was viewed as the color red, then red light was…

onto the skin. Their gland shape differs depending on location. Function is to secrete oil. 16. Describe the structure of hair and list some functions of hair. Shaft consists of the medulla - inner layer, air spaces; cortex - middle layer, pigments; cuticle - outermost layer, hard keratin. Root- similar to shaft, but within dermis. Follicle - surrounds root. Sheath - supports shaft & root. Bulb - enlarged layered structure at base where hair is generated; papilla - areolar connective…

(environmental),  metallurgy,  biological systems,  industry  medicine. Coordination compounds has many applications in qualitative and quantitative chemical analysis. For the detection and estimation by classical and instrumental methods of analysis, the basis are provided by the common colour reactions given by metal ions. •Examples of such reagents include EDTA, DMG (dimethylglyoxime), α–nitroso–β–naphthol, cupron . Coordination compounds in biological systems and biochemistry…

beliefs and taboos. But, have these practices and beliefs always contributed to the well-being of the society? In many African countries albinism is considered a curse. Albinism is a congenital disorder characterized by the total or partial absence of pigment in the skin, hair and eyes. Due to their skin tone, people with albinism are often persecuted, tortured, insulted and put aside by a society of the Stone Age. One which tends to believe in myths that goes against all the virtues of human…