In the 1930’s‚ Richard Dogmagk experimented with a red dye called prontosil and found that it had strange healing effects‚ when he injected the dye into mice with severe streptococcus infections‚ they all survived. Dogmagk had discovered the one of the fist antibiotics‚ specifically the first Sulfa drug. When scientists isolated the active part of the prontosil molecule they discovered how it and all sulfa drugs work. Sulfa drugs contain a sulfur atom that has six total bonds (shared electrons)
Premium Antibiotic Bacteria Antibiotic resistance
Ancient Egyptian Inventions Wednesday‚ 16 September 2009 Egyptian civilization was born on the banks of the Nile in 3150 BC‚ when the upper and lower Egypt were united under the rule of the first Pharaoh. Egyptians were intelligent people who made inventions in almost every corner of life‚ which made them the longest lived civilization. Although normally the Egyptian civilization is associated with the pyramids and mummies‚ the Egyptians actually created numerous inventions that have made
Premium Ancient Egypt
The United States of America became a union through sacrifice and freedom. Prior to the Civil War‚ most slaves in the South risked their lives for freedom. Harriet Tubman‚ along with Thomas Garrett and Frederick Douglass‚ were all important figures in the Underground Railroad. Their heroic deeds illustrated the themes that made their country unite. As a conductor‚ Tubman led more runaways to the promised land. Her motto was‚ “We got to go free or die. And freedom’s not bought with dust.” She
Premium Slavery in the United States American Civil War Slavery
more peaceful nations in the world. 25‚000 letters later as a result of the statement of the Peace Corps went into full effect with it being included in the presidential campaign of Kennedy. This commenced the beginning of a new and well-developed contribution of John F. Kennedy that served patriotism and success amongst the American Society and the
Premium Cold War Cuban Missile Crisis Soviet Union
Mark Scheme Mock Paper GCSE GCSE in Mathematics Specification A Higher Tier Paper 2 (Calculator) Edexcel Limited. Registered in England and Wales No. 4496750 Registered Office: One90 High Holborn‚ London WC1V 7BH General Marking Guidance • All candidates must receive the same treatment. Examiners must mark the first candidate in exactly the same way as they mark the last. • Mark schemes should be applied positively. Candidates must be rewarded for what they have shown
Premium Gospel of Mark Question
Islamic Contributions and their Impacts on the World The Islamic civilization had many great achievements and accomplishments that have contributed to world culture. Islamic achievements have helped other cultures adopt new ideas and make great advancements in an immense variety of fields. These fields include medicine‚ art and literature‚ architecture‚ astronomy‚ philosophy‚ and mathematics. Islamic achievements also assisted in making daily life for the Muslim people a great deal easier. Of
Premium Qur'an Culture Islam
w w w e tr .X m eP UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education e ap .c rs om MARK SCHEME for the May/June 2012 question paper for the guidance of teachers 0580 MATHEMATICS 0580/31 Paper 3 (Core)‚ maximum raw mark 104 This mark scheme is published as an aid to teachers and candidates‚ to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details
Premium General Certificate of Secondary Education
focused on the students of Mapúa and subjects such as Mathematics and Physics. This study would then suggest where students need to focus their study between the said subjects. Definition of Terms Mathematics is the science of numbers and their operations‚ interrelations‚ combinations‚ generalizations‚ and abstraction and of space configurations and their structure‚ measurement‚ transformations‚ and generalizations. Calculus is a branch of mathematics focused on limits‚ functions‚ derivatives‚ integrals
Premium Mathematics
measures of intellectual capacity is one’s knowledge of Mathematics. In school‚ Mathematics is offered as early as in kindergarten‚ elementary‚ high school and then college. The importance of Mathematics based on its theoretical and practical uses as demonstrated by researchers is found to be vital for the progress of civilization. Teaching Mathematics is not an easy task for it involves not only teaching skills but also making Mathematics meaningful and understandable to students. The teacher must
Premium Learning Intelligence Study skills
Roman Achievements Jigsaw Background: The period of great cultural achievements for the Roman Empire is referred to as the Pax Romana‚ or “Peace of Rome.” Beginning after the Republican Wars in 27 B.C.‚ and lasting to about 180 A.D.‚ this era was marked by general tranquility and unity across the empire. By this time‚ Rome had overtaken most of the Mediterranean world and had spread its culture. Family & Religion The family was the basic unit of Roman society. Under Roman law‚ the male head
Premium Roman Empire Ancient Rome