Biology Exam Review Unit One – Biochemistry What is an isotope? Isotope - An isotope is all atoms of the same element that have the same number of protons‚ but they may have different numbers of neutrons in the nucleus. - This means that all atoms with the same atomic number can have different atomic masses. - Because they have the same number of protons and electrons‚ they behave exactly the same in chemical reactions. Radioisotope - The nuclei of some isotopes of an element are unstable
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Big Idea 2 Biological systems utilize free energy and molecular building blocks to grow‚ to reproduce and to maintain dynamic homeostasis. Living systems require both free energy and matter to maintain order‚ grow and reproduce. Organisms employ various strategies to capture‚ use and store free energy and other vital resources. Energy deficiencies are not only detrimental to individual organisms; they also can cause disruptions at the population and ecosystem levels. Biological systems must both
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the lower and middle course of the Swift River. At each site the depositional land form were analysed and identified. Multiple measurements were made and recorded. The three (3) sites that were studied can be identified on a map (topographical sheet‚ scale 1:50) and their sizes were determined using one scale of the map and also information recorded at the site. Sample of the sediment that was found at locality one (1) were collected random‚ by the students taking up a piece of rock without looking
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6. A proforma cost sheet of a company provides the following particulars : Elements of Cost Material 40% Direct Labour 20% Overheads 20% The following further particulars are available: (a). It is proposed to maintain a level of activity of 2‚00‚000 units. (b).Selling price is Rs.12 per unit (c) Raw materials are expected to remain in stores for an average period of one month (d) Materials will be in process‚ on averages half a month. (e) Finished goods are required to be in stock for
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Why Some Students Cheat Nowadays‚ there are many popular ways for students to cheat in exams. Some students take their notes into the examination rooms. Some students ask their friends the answers by whispering while taking the exams. And some students just try to copy the answers of students who sit in front of them without caring how similar to giraffes they are. It is interesting to focus on the question that why some students still keep cheating in exams even though they know that the punishments
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Echinoderm Echinoderm diversity Scientific classification Kingdom: Animalia Subkingdom: Eumetazoa Superphylum: Deuterostomia Phylum: Echinodermata Klein‚ 1734 Subphyla & Classes Homalozoa † Gill & Caster‚ 1960 Homostelea † Homoiostelea † Stylophora † Ctenocystoidea † Robison & Sprinkle‚ 1969 Crinozoa Crinoidea Paracrinoidea † Regnéll‚ 1945 Cystoidea † von Buch‚ 1846 Asterozoa Ophiuroidea Asteroidea Echinozoa Echinoidea Holothuroidea Ophiocistioidea † Helicoplacoidea †
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Cited: * -Shefferly‚ Nancy. University of Alabama BSC 117 Laboratory Manual Spring 2010. Tuscaloosa‚ AL: Shefferly‚ 2010. * -Cambell‚ Neil‚ Jane Reece‚ Lisa Urry‚ Michael Cane‚ Steven Wasserman‚ Peter Minorsky‚ and Robert Jackson. Biology. 8th ed. San Francisco‚ CA: Benjamin Cummings Inc.‚ 2008. * Curds‚ C.R.‚ Cockburn‚ A. 1968. Studies on the Growth and Feeding of Tetrahymena pyriformis in Axenic and Monoxenic Culture. Journal of General Microbiology 54:343-358.
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Biology Honors Final Exam Review Study Guide A. Intro Unit * Characteristics of life (DR.CHARGE) * DNA * Directs protein synthesis * Reproduce * Divides in mitosis (asexual reproduction) * Cells * Homeostasis * The process by which cells maintain constant internal condition (water‚ temperature) * Adaptation (Evolution) * Respond to stimulus * Growth (Development) * Energy * Heterotroph: an organism that cannot synthesize its own food
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ordinary resolution for many students‚ more and more students do so every day‚ mimicking the action of their peers. Unfortunately‚ the eighty-five percent of students who cheat would prefer a higher score than the chance to grow as a learner. All of the cheating boils down to one simple concept: college acceptances. To begin‚ students cheat in order to get accepted to the college of their choice. As Kolker explains‚ students believe that‚ “College‚ more than ever‚ determines success.” As a high school
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The Sicilian Mafia‚ or Cosa Nostra is a criminal syndicate that emerged in the mid-nineteenth century in Sicily‚ Italy. It is a loose association of criminal groups that share a common organizational structure and code of conduct. The origins lie in the upheaval of Sicily’s transition out of feudalism in 1812 and its later annexation by mainland Italy in 1860. Under feudalism‚ the nobility owned most of the land and enforced law and order through their private armies. After 1812‚ the feudal barons
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