Cysteine

15. If true chemical bonds bind atoms together to form a molecule through electron sharing, what is special about a Hydrogen Bond that makes it not a true chemical bond? My Answer: B) Unequal distributions of the protons generates partial charges Correct Answer: A) Electrons are shared unequally between different atoms Why my answer was wrong: I did not realize that the answer says, “protons,” instead of, “electrons.” The protons are not distributed from the nucleus, because if they were, the…

DNA handles with biotin and digoxin are coupled to the N- and C-terminal cysteine residues of Cys-GB1-AFV3-Cys using the methods described in chapter 2 (2.2.2). GB1 is mechanically stable(149, 150) and would not be unfolded before the unfolding of AFV3-109, which we have proved in our AFM experiments in chapter 3 as we are pulling…

The rare disease known as Hutchinson-Gilford Progeria Syndrome (HGPS) is a genetic disorder that causes newborn children to age more rapidly than normal. HGPS belongs to a group of progeroid syndromes that can classified as segmental disorder that affect many tissues and organs and display symptoms that resemble physiological aging. This disorder unfortunately results in a short life span for those affected. It is reported that it occurs about 1 in 8 million births around the globe. (Arancio,…

Write neatly and legibly. Copyright reserved Please turn over Life Sciences/P1 3 NSC DBE/Feb. – Mar. 2011 SECTION A QUESTION 1 1.1 Various options are provided as possible answers to the following questions. Choose the correct answer and write only the letter (A – D) next to the question number (1.1.1 – 1.1.6) in the ANSWER BOOK, for example 1.1.7 D. 1.1.1 The process in which male gametes are formed in humans is called … A B C D 1.1.2 When the first…

1.0 THE FACE 1.1 Company Background The Face which is based in Sarawak decided to introduce a product, bird’s nest facial mask, which is made by the bird’s nest, and solely based on specialized knowledge and experiences on fundamentals of skin. We have decided to export our products domestically and to international regions of the world, which is China and Korea. We choose bird’s nest facial mask as our product because it has a lot of natural nutrients which are beneficial for the consumers.…

The Ebola virus is gaining worldwide fame due to its sensational outbreak originating from Sierra Leone. The outbreaks of the virus have been recognized and effectively dealt with in the past, but the present outbreak is becoming a overwhelming challenge. Approximately there have been 15,000 suspected cases of the disease and 6,000 confirmed deaths so far. The horrifying visual hemorrhagic symptoms caused by the Ebola virus include internal and external bleeding as well as the fear inducing…

1. Introduction Lernaea infection is a major disease problem encountered in carp culture in the Indian subcontinent and has been reported from Indian major carps Catla (Catla catla), Rohu (Labeo rohita), Mrigal (Cirrhinus mrigala) , exotic carps silver carp (Hypophthalmichthys molitrix), grass carp (Ctenopharyngodon idella) and indigenous carps Labeo fimbriatus (Nandeesha et al., 1984, 1985; Tamuli and Shanbhouge, 1996; Zafar et al., 2001). The three Indian Major Carps viz., Catla, Rohu and…

Cosmetic tanning has become the safe option for people seeking a suntan. Professional spray tan applications are available from spas and salons by hand-held sprayers and involves spraying the tanning solution over the entire body. This is considered the best option for a safe tan with a professional finish without dangerous side effects. This is often used for one off special occasions and for those clients that wish to have a natural looking tan without damage to the skin. Some people may use…

1.5. Enzyme-Polysaccharide Interactions Proteins and enzymes have become an integral part of many industrial processes as well as being applied both in cosmetics and in therapeutics. Due to advances in biotechnology and genetic engineering, mass production of protein and enzymes has become feasible. Use of enzymes is environmentally friendly as they catalyse reactions under mild conditions against polluting inorganic catalysts which works in the extremes of pH and temperature. However, this can…

General Introduction Dietary lipids: Dietary lipids consist of a broad group of compounds that are soluble in organic solvents and insoluble in water. Their density is lower than water and consistency varies from liquids to solids at normal room temperature, depending on their structure and function. They are also referred as ‘Oils’ which are liquid and ‘fats’ which are solid at room temperature. Lipids are the important constituents of diet due to their higher energy value. One gram of lipid…