Pigment

regulates the distribution of melanin, a dark-colored pigment, within the hair shafts of felines. Melanism, the opposite of albinism, is a condition characterized by the induced, excessive development of melanin within the outer coverings of an organism, resulting in a darkened appearance and black or brown colored extremities. The effected organism still possesses the typical markings of its species, but they are often masked by the dark pigment, in an effect known as ghost striping. For each…

There are two different ways that electron flows, cyclic and noncyclic (linear). Noncyclic Electron flow is important for processes such as the synthesis of ATP and NADPH, since it is the key to the energy transformation in these mechanisms (Campbell 195). Linear/Noncyclic electron flow occurs mainly during light reactions of photosynthesis by having the flow of electrons go through the photosystems and other molecular components that are built into the thylakoid membrane (Campbell 195). They…

Chloroplast is membrane bound organelle inside plant cells. chloroplast like many other organelles has a specific job. Chloroplast absorbs sunlight and uses it with water and carbon dioxide gas to produce food for the plant. chloroplasts also have the pigment chlorophyll, which absorbs deep-blue and red light, so that the rest of the sunlight spectrum is being reflected, causing the plant to look green. Chloroplasts also contain flattened sacs known as thylakoids. Thylakoids are small…

Functions of the skin: There are eight main functions associated with the skin. These are as follows... 1. Secretion – the skin secretes sebum from the sebaceous glands. This fatty substance lubricates the hair shafts and when combined with perspiration on the surface of the skin, it creates a natural moisturiser which acts as a protective barrier against bacteria. 2. Heat regulation – body temperature is maintained in healthy humans at 37oC (98.6oF). organs involved in heat production are…

J.M.W. Turner By Peter Milnes J.M.W. Turner was an English landscape painter. He had a very interesting artistic life from his budding childhood to his unfortunate death. He created beautiful works of art now exhibited in many places of the world. I picked him because I have had many experiences with his art, and I love his style of painting, especially how he made light realistic. Examples of this can be seen when light shines on water or when the moon is present. This and the amount of…

Other Evidence of Neandertal Culture Much can be inferred about Neandertal culture from the archaeological evidence. For instance, it is probable that in colder climates they wore some sort of protective clothing to keep warm. In all likelihood, they used animal skins for this purpose. There are two sources of indirect evidence for this. First, many Neandertal sites have stone awls or borers. These were flakes that had been shaped to produce a beak-like projection on one end or side.…

A 2 month-old female patient underwent surgery for left eyeball enucleation due to a household accident and was referred to Araçatuba Dental School for rehabilitation with ocular prosthesis. The anophthalmic socket of the patient were examined, and an atresic cavity was observed (Fig. 1), requiring gradual increase with an acrylic expander. For this, the anophthalmic socket impression was obtained using dense silicon (Express; 3M ESPE, St. Paul, Minn, USA). The mold was inserted into a flask…

My friends were 1.3 meters tall, with dark-green skin color, and wore antiqued “watches”. They were called lockers; my best friends in middle school. I was once submissive. Feared, I would protect myself by speaking “Yes”, “No”, or “I don’t know” to camouflage from others. Every day I would sit in the Special Education hallway with my friends numbered “1023-1031”, plug in my headphones, and separate myself from the rest of the world. Day after day, 6 months passed. One day, I was at my usual…

I have a strange infatuation with diseases. I love to see diseases, analyze them, understand the symptoms that define them, but most importantly, discover if and how the ailment can be cured. One disease that has recently become a focus in my life, is one I have personally entitled African American Dystrophy; a disorder characterized by the weakening, degeneration, or abnormal development of a people. It is a disease that has been metastasizing this country since I was young. Spreading rapidly,…

The Usher syndrome type 1 G protein is encoded by USH1 gene. The USH1G gene’s cytogenetic location is on the q arm (long arm) in chromosome 17 at position 25.1 (17q25.1). Its molecular location on the chromosome 17 is at base pairs 74,916,082 to 74,923,262 (Summary: Usher Syndrome, Type 1G). USH1G gene’s main function is to provide information for making a protein, SANS, which is located in the inner ear and the retina. The protein SANS, interacts with other proteins which forms a larger…