Hydroponics: Growing Without Soil The science of growing plants without soil has been known and used for more than one-hundred years. The word “hydroponics”‚ however‚ is comparatively new. Dr. W.E. Gericke is usually given credit for coining the word‚ which translated from Greek‚ means “working water”. The famous hanging gardens of Babylon were probably on of the first attempts to grow plants hydroponically. The work of Dr. Greicke in the 1920’s and 1930’s
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Biomimetics From Wikipedia‚ the free encyclopedia Velcro tape mimics biological examples of multiply hooked structures such as burs. Biomimetics or biomimicry is the imitation of the models‚ systems‚ and elements of nature for the purpose of solving complex human problems.[1] The terms biomimetics and biomimicry come from the Greek words bios‚ meaning life‚ andmimesis‚ meaning to imitate. A closely related field is bionics.[2] Living organisms have evolved well-adapted structures and materials
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(Potyviridae‚ Potyvirus‚ ssRNA) (Watermelon mosaic virus 1) infects cucurbits only. It causes mottled and mosaic leaves‚ blisters and distortion. It is sap transmissible and is carried non-persistently in aphids; it is not seed borne. There is tolerance in some varieties. Watermelon mosaic virus (Potyviridae‚ Potyvirus‚ ssRNA) (Watermelon mosaic virus 2) infects cucurbits‚ many weed species and especially legumes; it causes variable symptoms including mottled and mosaic leaves and stunting (photos 1 and
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for separating proteins in solution 1937 Frederick Charles Bawden discovered tobacco mosaic virus RNA 1944 Barbara McClintock reported transposable elements: "jumping genes" 1946 Edward Tatum and Joshua Lederberg discovered that bacteria can exchange genetic material directly through conjugation Max Delbruck and Alfred Day Hershey discovered a combination of genetic material from viruses: genetic recombination 1950 Erwin Chargaff found that amounts of adenine and
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Vitamin-enriched corn contains increased amount of vitamin A‚ vitamin B and vitamin C compared to the normal corn. Another example of GMO is squash. Genetically modified squash have resistance to the common squash viruses‚ namely watermelon mosaic virus‚ zucchini yellow mosaic virus and cucumber mosaic virus. Other than crops‚ farm animals are also genetically modified to mature in a shorter time period to minimize expenses and increase profits for farmers‚ as well as to be resistant to certain diseases
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AP Bio - Modern Genetics Protein Synthesis • Start with primer • New strand is 5’ to 3’ • TATA Box - TTAATTAA • RNA Polymerase - Reads and matches bases (One recipe; only reads leading strand) • Single strand produced; mRNA • Now produced pre-mRNA (You need exon‚ not intron) • Introns create spaces‚ need ligase to connect exons to make true mRNA. • Adds a poly A tail (on 3’ side) and 5’ (prime) cap (on 5’ side) used for defense • Leaves through pore to ribosome. • Messenger RNA will attach to
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As we have seen‚ public policy can drive the issues that create a cultural climate looking for change. Several issues that are finding platforms for discussion among politicians‚ teachers‚ and communities could provoke changes in the next few years. The trends we currently see in family support services are: * States adopting a variety of tax credits for working families giving them help with childcare and in-home care expenses (Hirschhorn Donahue‚ 2006) * Family-leave policies‚ allowing
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The Ebola Virus History of‚ Occurrences‚ and Effects of Ebola‚ a virus which acquires its name from the Ebola River (located in Zaire‚ Africa)‚ first emerged in September 1976‚ when it erupted simultaneously in 55 villages near the headwaters of the river. It seemed to come out of nowhere‚ and resulted in the deaths of nine out of every ten victims. Although it originated over 20 years ago‚ it still remains as a fear among African citizens‚ where the virus has reappeared occasionally in parts
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Teratogens and their effects on pre-natal development In this essay we will look into what teratogens are. The different types of teratogens‚ and how much of a role they play on the pre-natal development‚ and the foetus. Also how the teratogens that impacts us in the womb‚ can also affect our bodies and our minds for the rest of our natural lives. We shall also discuss all the different stages of pre-natal development‚ from the conception‚ to the birth‚ and all the different factors in the growth
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Microorganisms and Fungi Bacteria and Viruses Viruses Vocabulary virus: A nonliving‚ infectious particle composed of a nucleic acid and a protein coat; it can invade and destroy a cell. pathogen: A virus‚ microorganism‚ or other substance that causes disease; an infectious agent. capsid: A protein sheath that surrounds the nucleic acid core in a virus. envelope: A membrane-like layer that covers the capsids of some viruses. glycoprotein: A protein to which carbohydrate
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