Case Study: Are Viruses Living? Dear Students‚ You came to me asking a question that has puzzled mankind ever since we have discovered them. Are viruses alive? Are the chicken pox‚ flu‚ HIV‚ and H1N1 viruses living? They are among the smallest microbes‚ but they can make people fell ill. So are they living or not? In my opinion‚ viruses are not alive. All living things have the same basic characteristics. According to Document B‚ organisms maintain homeostasis. Also‚ living creatures are
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Diversity in Living Organisms Q 1 Name the branch of the biology that deals with the classification. Q 2 Who was the first to propose the two-kingdom system of classification? Q 3 Who proposed three-kingdom classification? Q 4 What is meant by triploblastic? Q 5 What is haemocoel ? Q 6 Name the person who has given the five-kingdom classification. Q 7 Which is the largest phylum of animal kingdom? Q 8 What is the function of canal system in sponges? Q 9 What are Gymnosperms
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CH 12 TRANSPORT IN LIVING ORGANISMS EXERCISE 1. FILL IN THE BLANKS (i) The principal physiological requirement of all organisms is the maintenance of …………………… (ii) The type of diffusion against the concentration gradient (up hill movement) involving the expenditure of energy is called…………………. (iii) The cell walls of the plants cells keep the……………within limit. (iv) The content of the vacuole of plant cell is called……………. (v) The internal pressure exerted on the cell wall by the
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Diversity in Living Organisms (Science) |Close X | |[pic] Classification And Evolution Classification refers to the identification‚ naming‚ and grouping of organisms into a formal system based on similarities in their internal and external structure or evolutionary history. It determines the methods of organizing diversity of life on earth. Therefore‚ classification helps in understanding millions of life forms in detail. Who started the classification of organisms? Let us explore the history of
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Similarities and Differences Bacteria and archaea both share the fact that they are single-celled prokaryotic microorganisms that lack membrane enclosed nuclei. It has been discovered that the two typically can be found to have the same size and shape as one another. “They are both found occurring as rods‚ cocci‚ spirals‚ plates‚ coiled etc.” ("Archaea vs. Bacteria‚" n.d.). Both organisms use the flagella to swim and also reproduce by means of binary fission. On the surface these similarities can
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differentiate between bacteria‚ fungi and yeast‚ we plant four different microbes in plates under the same environment for one week and compare the growth of the four microbes by macroscopic and microscopic observation. Meanwhile‚ the diversity of bacteria and fungi in humans‚ the environment and wood could be observed. In addition‚ the four substrates are cultured in two media‚ MEA and NA‚ under the same condition. Thus‚ how nutrients affect the growth of bacteria and fungi could be achieved. During
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Should Viruses Be Considered “The Walking Dead”? Viruses are often misunderstood because they are so similar to bacteria‚ yet they aren’t living. This seems impossible. How can something so sinister not be a living thing? Think about the damage viruses do. How they multiply and invade and make us so miserable. Yet viruses should not be considered living because they do not possess the three most important characteristics of life: reproduction‚ homeostasis‚ and metabolism. Viruses cannot multiply
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How bacteria can affect the lives of humans and other organisms Bacteria can enter the body in 3 different ways. Through the gas exchange system‚ by breathing in pathogens‚ most are trapped in the mucus lining in the lung epithelium. There are also cilia that move the mucus up the trachea and into the mouth where it is removed. However some bacteria is still able to reach the alveoli where they invade cells and cause damage. Another way it can enter the body is through the skin‚ if the skin is
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A fungus (/ˈfʌŋɡəs/; plural: fungi[3] or funguses[4]) is a member of a large group of eukaryoticorganisms that includes microorganisms such as yeasts and molds (British English: moulds)‚ as well as the more familiar mushrooms. These organisms are classified as a kingdom‚ Fungi‚ which is separate from plants‚ animals‚ protists and bacteria. One major difference is that fungal cells have cell walls that contain chitin‚ unlike the cell walls of plants and some protists‚ which contain cellulose‚ and
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Ecosystem and Living Organisms By: Tiepha Bridges University of Phoenix Instructor: Jonathan Neville February 29‚ 2012 Ecosystem and Living Organisms Gray wolves were once free to roam across Northern America‚ but this was before people hunted‚ trapped‚ and poisoned them. The drastic reduction of the Gray wolves in Northern America was a devastating blow to the ecosystem‚ but their extinction marked a critical loss
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