Chitin Essays

Sypharochiton pelliserpentis S. pelliserpentis has a dorsal shell that is made up of eight shell parts known as valves. These eight valves are bound together by a girdle which is strong and flexible and circles the valves. This particular species of chiton has its plate overlapping to resemble snake’s skin, thus, being colloquially referred to as the snakeskin chiton. The valves of S. pelliserpentis are very hard and allows the chiton to lay flat against a rocky surface. S. pelliserpentis has many

at the faculty of sciences in Nancy- France) extracted chitin for the first time and named it as ‘fungine’, he noticed that it is not soluble in sulfuric acid. In 1823, Auguste Odier, a French scientist extracted chitin from cuticle of beetles and named it after the Greek word for ‘tunic’, ‘chiton’ and after that ‘chitin’ was used. In 20th century scientists studied more about polymers and their uses, and discovered useful properties. Chitin is environmentally friendly as it is non-toxic and biodegradable

derivative of chitosan that is derived from partially deacetylated chitin (Roberts, 1992). Chitin is a second most abundant natural polysaccharide after cellulose (Austin et al., 1981). It is found commercially in the waste product of the marine food processing industry (Limam et al., 2011). The α-chitins were isolated from the exoskeletons of crabs, lobsters and shrimps, endoskeletons of mollusks, β- chitin from squids, and γ-chitin also found in cell wall of fungi and algae (Peniche, Arguelles-Monal

interact with horseshoe crabs even though they are a keystone species because we can use their benefits and also help them too. Some ways that we can preserve their species and simultaneously gain benefits is by flipping them over when they are stranded, chitin, and helping them rebuild their breeding habitats after human causes or natural causes such as tornados, and hurricanes. Have you ever seen a horseshoe crab overturned and you wanted to help it? Well, I have, and I really wanted to flip it back

infection, Metarhizium spp. form different infection-specialized cellular structures and secrete a set of hydrolytic enzymes that helps to breach the chitin-rich host cuticle and to access the host hemolymph. Amongst these secreted enzymes there are chitinases. These enzymes catalyze the hydrolysis of β-1,4 glycosidic bonds between GlcNAc monomers in chitin. In fungi, chitinases display not only nutritional importance, but also exhibit morphogenic and autolytic functions, acting on different processes

The cells of several eukaryotes in the kingdom Animalia also contain chitin, which is one of the characteristics that makes organisms in the kingdom Fungi more closely related those in the kingdom Animalia than the kingdom Plantae. The metabolism of Fungi is now known to be a heterotroph that absorbs its nutrients from surrounding

People all over the world have one thing in common that they want to do something which makes them happy and as a human being I want to pursuit the happiness too. Since the time of my undergraduate studies, laboratory work and the research during my graduate studies at University of Dhaka gave me undoubted enjoyment and happiness, I want to continue research work and become a researcher in chemistry. I, Dewan Russel Rahman, am applying to the Master of Science (M.S.) degree in the Graduate Program

Have you ever wondered how the universe was created or how we all came to be? The two most known movements that claim to know how everything was created are Evolutionism and Creationism. Evolutionists believe in the Big Bang Theory and that species evolve over time in a process called natural selection where those who have become better adapted, tend to survive and produce more offspring. Creationists believe that the universe and all living organisms originate from specific acts of a divine creator

Organisms are classified into six different kingdoms. They are archaebacteria, eubacteria, protista, fungi, plants, and animals. This is how life is categorized and the function on living things. The Archaebacteria kingdom is a unicellular bacteria which means that there is only one cell. They survive in extreme environment like hot springs and salt lakes. They are also prokaryotes which means they don’t have a nucleus and lack most organelles. The Eubacteria kingdom is a unicellular just like archaebacteria

Chitosan is a linear copolymer of β (1=>4) linked 2-acetamido-2-deoxy-β-D-glucopyranose and 2-amino-2-deoxyβ-D-glycopyranose, easily obtained by deacetylation of chitin, an abundant polysaccharide found in nature as a component of exoskeletons of crustaceans and insects. Chitosan is reported to be biocompatible, biodegradable and non toxic, having some biomedical properties such as healing accelerator, antifungal

disease that can be acquired by drinking water or eating food that is contaminated with the Cholera bacteria. Cholera usually spreads when eating raw or undercooked shellfish. The cholera bacterium can be found in marine water attaching itself to chitin-containing sea creatures. The cholera bacteria infects the intestines and the spreads to the rest of the body after it is ingested. The infection can be mild or with no symptoms, but 5-10% of people infected will have severe cholera and maybe even

digestion of food are responsible. Thorns are in intestinal entries that does not pass large pieces of food. Covering the stomach wall is chitin, which helps digestion. Hepatopancreas produces enzymes like pancreas that is effective in digestion. Intestinal absorption of food is done in the middle part. Intestinal tract, except the middle part is covered with chitin layer each molting is separated and re-built. In some seasons, in the front wall of the stomach made some calcareous Gostrolith that seems

acidities which is due to because of the varying species. Species that fed on fruit, leaves, and insects had the lowest pH levels. Insectivores were believed to use a different way of digesting chitin and the scientists working the experiment found that acid played a role in some of the cases for digestion of the chitin but not all of them. There was some confusion between the carrion feeders and the carnivores because of how the carrion feeders have higher acidity levels than the carnivores. In the discussion

Fix or replace damaged tissue; biology has always been the main concern for scientists. Today, the most important instrument for tissue engineering scientists to produce replacement tissues and implants to repair or replace damaged tissue. Tissue engineering is generating a new field of study in which the principles of engineering and biology to correct the damaged tissue, uses and can renewal, operation and maintenance of tissue healing. In order to use an ideal scaffold Tissue engineering should

Microorganism is living organism( such as bacteria, fungi, viruses) too small to be seen with naked eye but visible under a microscope. Also called But as long as humans microbe(Dictionary.com)can’t live without carbon, nitrogen, protection from disease and the ability to fully digest their food, they can’t live without bacteria, said Anne Maczulak , a microbiologist and author of the book “Allies and Enemies: How the World Depends on Bacteria”(FT Press,2010) Microorganisms are crucial because they

fiber than simple carbohydrates. They also contain healthy amounts of vitamins and minerals. Monosaccharides dissolve in water and are very sweet tasting. Lactose is a disaccharides. Complex carbohydrates include starches, glycogen, cellulose, and chitin. Many plants store their energy in starches, which we consume in the form of vegetables such as potatoes, and then use the energy as we digest the food. Animals store their energy in glycogen, which is stored in their muscles and liver and used when

Animalia Phylum Arthropoda Class Crustacea Order Cladocera Family Daphniidae Genus Daphnia species Daphnia magna Why is this organism a member of this phylum? Daphnia are a member of Arthropoda because daphnia have an exoskeleton made of chitin and proteins and a segmented body, which are defining characteristics of arthropods. 1. What type of symmetry bilateral symmetry 2. How many germ layers three 3. Type of body cavity hemocoel 4. Type of segmentation

Introduction: I have chosen to look at a Bumble Bee’s Gas Exchange System. Their preferred habitat is in higher altitudes in the Northern hemisphere. They live in colonies of 50-500 underground with limited light. Their diet consists of eating pollen and drinking nectar. There is no need for a bee to hibernate as their life span is only 28 days long. They mate with the queen’s bee and she will later give birth to the multiple larvae. I have chosen to look at an Angler Fish’s Gas Exchange System

Zygomycota Structure - They have Cell walls which are made of chitin-chitosan. Zygospore which are mature has thick walls. Description - In the kingdom of fungi they are very small group and they are the Phylum Zygomycota.They can reproduce asexually or sexually with the help of process cis a classification that encompasses many dialled conjugation.In the classification of Zygomycota you can see many dfferent species and they all have a genome structure which are different. Characteristics

fungi kingdom is often confused with the plant kingdom. Since the characteristics are very similar. For example, both species use chloroplast to gain energy. Also fungi have similar characteristics to animals. Fungi have cell walls made up of chitin. Chitin are hard substance that makes up of exo-skeleton