hard-outer shell that provides support and protection. The exoskeleton also helps to regulate water loss and limit the size of insect growth. The exoskeleton is made up of a composite called chitin. Chitin is a chemical relative of glycogen and cellulose. The exoskeleton is made up of three parts called the epidermis‚ basement membrane‚ and the cuticle. The cuticle is the part of the exoskeleton where most chitin concentrations occur. Bumblebee wings are formed of the same material as the rest of
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ABSTRACT: The electrophilic aromatic substitution reaction is the attack of a benzene ring on an electrophilic species resulting in the substitution of a proton with a functional group. The electrophilic aromatic substitution reaction nitration is used to nitrate methyl benzoate and acetanilide with a nitronium ion. Crystallization was used to purify the product. The melting point was used to determine its purity and the regiochemistry of the products. The methyl benzoate reaction product‚ methyl
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PICRIC ACID (DIRECT DYE): Take about 60 mL of water in a 400 mL beaker. Add 2-3 drops of concentrated sulphuric acid and about 0.5 g of Picric Acid to it. Stir the solution with a wooden stick and warm over a hot water bath. Immerse one piece of each wool‚ cotton‚ polyester‚ nylon and terecot into it. When the pieces are thoroughly wetted in dye solution remove these with the help of forceps. Wash these with the help of warm water till the washing is colourless. Dry the pieces and note the results
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“An Essay Explaining the Biochemical Processes that Occur During Decomposition in the Soil Using Organisms such as Bacteria‚ Fungi and Algae. It also Involves an Analysis of the Chemical Reactions Facilitated‚ Processes Involved‚ Mineralization and the Role(s) of Organic and Inorganic Compounds.” by Alicea Bigby-Smart ID #: 12480025 Montego Bay Community College Submitted in Partial Fulfillment of the Requirements of the Council of Community
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esters‚ due to their ester bonds being susceptible to attack by water. Some examples of these are the natural poly-3-hydroxybutyrate‚ the renewably derived polylactic acid‚ and the synthetic polycaprolactone. Others are the cellulose-based cellulose acetate and celluloid (cellulose nitrate). Under low oxygen conditions biodegradable plastics break down slower and with the production of methane‚ like other organic materials do. The breakdown process is accelerated in a dedicated compost heap. Starch-based
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Glycogen is usually stored in the liver and muscles. Glycogen is only used when the body lacks of simple sugars. (d) Cellulose is the main constituent of the cell wall. Therefore‚ cellulose is found in abundance in vagetables and fruits cannot be digested by the human digestive system. 5. Strach‚ glycogen and cellulose are made up
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Plantae including such multicellular groups as flowering plants‚ conifers‚ ferns and mosses‚ as well as‚ depending on definition‚ the green algae‚ but not red or brown seaweeds like kelp‚ nor fungi or bacteria. Green plants have cell walls with cellulose and characteristically obtain most of their energy from sunlight via photosynthesis using chlorophyll contained in chloroplasts‚ which gives them their green color. Some plants are parasitic and may not produce normal amounts of chlorophyll or photosynthesize
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Constitution as well as the Declaration of Independence‚ the Bill of Rights‚ and the Articles of Confederation are written on parchment. The terms parchment and vellum are also used in the paper making industry. Parchment paper is made from cellulose fibers prepared from fir trees or plants such as cotton or flax. Paper can be made which mimics the thickness and smooth surface of parchment. The terms refer to the finish of the paper and should not be relied upon as an indicator of its long term
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related as members of the same subgroup. Select the exception by indicating characteristic(s) of each option in the space provided thereby showing how the exception was determined. (3 marks) a. glucose b. fructose c. cellulose d. ribose e. deoxyribose Four of the five sugars listed below are related as members of the same subgroup. Select the exception by indicating characteristic(s) of each option in the space provided thereby showing how the
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Biology: Concepts and Connections‚ 6e (Campbell) Test Bank (1) Part (1) Chapter 1 Introduction: The Scientific Study of Life 1) Which of the following statements about the leopard is false? A) Leopards are the largest cat in the genus Panthera. B) Leopards‚ like lions‚ can roar. C) Leopards prefer to eat their kill in trees. D) Leopards are well-adapted for nocturnal hunting. E) Leopards are normally solitary animals. Answer: A Topic: Opening Essay Skill: Factual
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