Antibiotic Sensitivity lab A. Define the term selectively toxic. Why is it an important feature of antimicrobial agents? Selective toxicity is the ability of a chemical or drug to kill a microorganism without harming its host. Selective toxicity is important to microbial agents because it enables these agents to inhibit or kill a microorganism by interacting with microbial functions or structures different from those of the host thereby showing little or no effect to the host. B. What
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A General Review of Tetracyclines Antibiotics Chang Liu Instructor: Prof. Jasson Sello Department of Chemistry‚ Brown University Providence 02906‚ RI Tetracyclines are the first broad-spectrum antibiotic to be applied to clinic use. Nevertheless‚ the increasing incidence of bacterial resistance of tetracyclines led to a series of studies on the development of semisynthetic tetracyclines to circumvent the resistant organisms. In order to better design the structures of tetracycline derivatives
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Are You a Good or Bad Student? Being a good student is what everyone wants to believe they are. But in reality we all know that there are bad students. I‚ myself would like to believe I am a good student but when I looked over the facts it seems that I am not a bad or a good student. The first and foremost important quality of a good student is‚ of course‚ hard working. We can’t have a good result in academic success without training and effort. The next quality is active in community. A good student
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Yr 12 Biology Summary Notes Rangitoto College 2006 STRUCTURE AND FUNCTION IN CELLS Achievement Standard 90464 – Biology 2.8 – Describe cell structure and function TYPES OF CELLS • PROKARYOTIC CELLS = more primitive‚ unicellular‚ have no organised nucleus‚ no membrane-bound organelles‚ genetic material is 1 circular DNA molecule‚ can have tiny extra rings of DNA called plasmids‚ all have cell walls e.g. bacteria and blue-green algae • EUCARYOTIC CELLS = unicellular
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Page 1 of 8 BIOLOGY 12- CELL STRUCTURE & FUNCTION Chapter Notes THE CELL THEORY • Although different living things may be as unlike as a violet and an octopus‚ they are all built in essentially the same way. The most basic similarity is that all living things are composed of one or more cells. This is known as the Cell Theory. • our knowledge of cells is built on work done with microscopes • English scientist Robert Hooke in 1665 first described cells from his observations of cork slices
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Learning about Cells. First thing I want to show you is two beautiful pictures of a Cell. Imagine all of this is in something so small we cannot see it with our naked eyes. About 10‚000 average-sized human cells can fit on the head of a pin. There are a few exceptions‚ but the average cell is very tiny. Here are a few beautiful examples of a cell structure to kind of give you an idea of its beauty‚ and how they fit together. Plasma Membrane (cell membrane) First we are going to learn about
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variety of different drugs out of the cells. Bacteria can change the shape of receptors drugs would normally bind to and the change in receptor shape is usually due to a point mutation. Erythromycin resistance is due to an alteration on the 50S ribosomal binding sites. Penicillin resistance in Strep pneumoniae and methicillin resistance in Staph aureus is due to a change in the binding proteins in the cell wall. Fungi can become resistant by decreasing their synthesis of ergosterol. Ergosterol
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Genomes‚ Transcriptomes‚ and Proteomes 1 1.1 DNA 1.2 RNA and the Transcriptome 1.3 Proteins and the Proteome When you have read Chapter 1‚ you should be able to: Define the terms “genome‚” “transcriptome‚” and “proteome‚” and state how these are linked in the process of genome expression. Describe the two experiments that led molecular biologists to conclude that genes are made of DNA‚ and explain the limitations of those experiments. Give a detailed description of the structure of
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Faculty of Medicine MAHSA UNIVERSITY STUDY GUIDE Block: Genetics‚ Immunology & Molecular Medicine (GIM) Session: 2013/2014 Semester 1 (Year 1) MBBS PROGRAM Block Coordinator: Dr Selvi Palasubramaniam CONTENTS 1. Teaching Staff & Contacts 2 2. Academic calendars MBBS Session 2013 / 2014 3 3
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prokaryotes have been split into eubateria‚ bacteria and archeobacteria Carl P. Woese (1960’s) - proposed another taxon larger then a kingdom - called it a domain - placed in 1 of 3 domains - based on nucleic acid studies (specifically ribosomal RNA) Classification Modern Critera? 1) Morphological (cell type) 2) Physiological & Metabolic (ex. Reproduction) (asexual v. sexual) (autotroph?/ heterotroph?) (vertebra or envertibray) 3) Ecological (Range and Life cycle) 4) Molecular (Protein
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