Organ Systems and their functions I. Integumentary System Functions to protects against environmental hazards; helps control body temperature. Composed of Skin and derivates Epidermis – covers surface; protects deeper tissues Keratinocytes – waterproofing Melanocytes – pigment –protects against UV light Dermis – Nourishes epidermis; provides strength; contains exocrine glands Collagenous tissue – strength Skin Derivates A. Hair– protection and warmth (vellus – fine un-pigmented hair: terminal
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Forest This article is about a community of trees. For other uses‚ see Forest (disambiguation). | This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (August 2011) | A conifer forest in the Swiss Alps (National Park) Mixed deciduous forest in Stara Planina‚ Serbia A forest‚ also referred to as a wood or the woods‚ is an area with a high density of trees. As
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the DNA in a plant cell is enclosed within the nucleus. The most important distinctive structure of plant cell is the presence of the cell wall outside the cell membrane. It forms the outer lining of the cell. The cell wall mostly constitutes of cellulose and its main function is providing support and rigidity. Plants cells also contain many membrane bound cellular structures. These organelles carry out specific functions necessary for survival and normal operation of the cells. There are a wide range
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lyses and releases the new phages DNA structure (10.2) DNA structure is double helix DNA vs. RNA (10.2) DNA is deoxyribose while RNA is sugar ribose and RNA has the base Uracil instead of Thymine 4 nitrogenous bases & base pairing (10.2) A pairs with T‚ forming two hydrogen bonds‚ and G pairs with C‚ forming three hydrogen bonds. Watson‚ Crick‚ Franklin‚ Wilkins – DNA helix (10.3) Watson and Crick reported that DNA consisted of two polynucleotide strands wrapped into a double
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The social class structure in the society is reproduced in many ways. One of the ways is through education. Many believes that the main function of education is not to educate the younger generation‚ instead is to replicate the social class structure one generation after the other. Certainly‚ many contrasting opinions have been expressed by different sociologists and explanations are made to justify their point of view. Marxists believe that education serves the needs of the economic base of
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Unicellular organism From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search "Single-celled" redirects here. For prison cell assignment‚ see Single-celling. Valonia ventricosa is among the largest unicellular species. A unicellular organism‚ also known as a single-celled organism‚ is an organism that consists of only one cell‚ unlike a multicellular organism that consists of multiple cells. Historically the simple single celled organisms have sometimes been referred to as monads
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Task P5 ‘Explain how and why groups of customers are targeted for selected products’ Customers are people who buy products and services from other people (usually companies of one sort or another). What customers think and feel about a company and/or its products is a key aspect of business success. Attitudes are shaped by experience of the product‚ the opinions of friends‚ direct dealings with the company‚ and the advertising and other representations of the company. Irrespective of whether a
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Department of Management and Business Essay The main function of the fiat money Subject: Finance money and credit Done by: The second-year student of the department of Management and Marketing Yaroslav Buha Kharkiv 2013 The main function of the fiat money The fiat money has a long history of
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Aorta: The aorta carries oxygenated blood to different parts of the body. It distributes blood to all the arteries. Brachiocephalic artery: The brachiocephalic artery carries oxygenated blood away from the heart. It supplies the brain‚ right arm‚ and neck with blood. Common carotid artery: The common carotid artery supplies oxygenated blood to the front of the brain as well as the head‚ neck‚ face‚ and spinal cord. Subclavian artery: The subclavian artery carries blood away from the heart and
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Temperate forests correspond to forest concentrations formed in the northern and southern hemisphere‚ or in temperate regions. Main characteristics include: wide leaves‚ large and tall trees and non seasonal vegetation. Temperate forests can be further distinguished by weatherpatterns and geographical features that favor the predominance of certain kinds of trees. In temperate coniferous forests‚ evergreen coniferspredominate‚ while in temperate broadleaf and mixed forests‚ a more even distribution
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