processes. As a result of this‚ new areas have evolved such as bioinorganic chemistry and bioorganic chemistry. In this section we will talk about an important concept in bioinorganic chemistry called “Metallobiomolecules”. Metallobiomolecules 2.3. Electron Transfer Proteins 2.3.1. Cytochromes 2.3.2. Iron-Sulphur Proteins 2.4. Zinc Metalloproteins 1.0 Introduction to Metallobiomolecules As we already know‚ biomolecules are molecules appear in biological systems to perform a specific function‚ like
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Atoms Atom is the fundamental building block of all stuff‚ or what scientists like to call "matter". An individual atom is very small. In fact‚ the smallest type of atom‚ hydrogen‚ has a diameter of 10-8 cm. Every single object is composed of atoms. Our body is made up of many‚ many individual atoms. There are also many different types of atom. These different types are called elements. Examples of some elements are hydrogen‚ oxygen‚ and helium. Under normal conditions many atoms can stick together
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Democritus 1 Democritus Democritus was a Greek Philosopher born 460 B.C. in the city of Abdera‚ and died 370 B.C. He was born into a wealthy family and traveled the world extensively. He was known as the “laughing” philosopher‚ or the “happy” philosopher because he would constantly mock people‚ and laugh incessantly about his own jibes. Throughout his life he wrote over 70 books‚ however very few pages have survived the years. Some have said that Democritus blinded himself to better understand
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Chemistry: It is the science concerned with the atomic composition of substances‚ elements and their interactions‚ and the formation‚ decomposition and properties of molecules. -Biological chemistry or Biochemistry is the biological or physiological chemistry of living organisms and of the chemical changes occurring therein. Structure of Matter: All living and nonliving things are composed of matter. Matter; is anything that occupies space and has mass. Mass is the amount of matter in an object
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Explain the role of atomic number in MiniLab: Modeling Isotopes‚ p. 102 How Atoms Differ 2 sessions 1 block determining the identity of an atom. 6. Define an isotope and explain why atomic masses are not whole numbers. 7. Calculate the number of electrons‚ protons‚ and neutrons in an atom given its mass number and atomic number. Section 4.4 8. Explain the relationship between Careers Using Chemistry: Radiation Unstable Nuclei and Radioactive Decay 2 sessions 1 block unstable nuclei and radioactive
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Science‚ Medicine & Technology – Lecture 2 14th September‚ 2012 Global Warming – Paul Waithe * Differences between climate change & global warming: Global warming is the overall increase in the earth’s temperature. Climate change may be in either direction. For instance; more hurricanes‚ more wind etc. Comprehensive way at looking at weather patterns. * Climate change over the past century is directly linked to global warming. * Global warming could result in the world
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MOLECULAR ELECTRONICS INTRODUCTION Molecular electronics (sometimes called moletronics) is a branch of applied physics which aims at using molecules as passive (e.g. resistive wires) or active (e.g. transistors) electronic components. The concept of molecular electronics has aroused much excitement both in science fiction and among scientists due to the prospect of size reduction in electronics offered by such minute components. It is an enticing alternative to extend Moore’s Law beyond the
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STRUCTURE OF ATOM The rich diversity of chemical behaviour of different elements can be traced to the differences in the internal structure of atoms of these elements. After studying this unit you will be able to • know about the discovery of electron‚ proton and neutron and their characteristics; • describe Thomson‚ Rutherford and Bohr atomic models; • understand the important features of the quantum mechanical model of atom; • understand nature of electromagnetic radiation
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When comparing the sample to the wet mount slides‚ they look very similar. However in the staining methods‚ the cells and their borders were very distinct while the one in the wet mounts were not as distinct. It was a bit challenging to determine the figures in the cheek smear‚ but the bacteria form in the yeast wet mount were easily recognized. The direct staining was the following technique used. The cells were very easy to assess‚ well demarcated and had a very distinctive color. Instead
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1. You are looking at a Euglena using the x10 objective lens. You rotate the nosepiece around to x40 but the specimen is not visible. Describe what you should do next? Start by using the fine adjustment to attempt to focus on the Euglena. However‚ if it is still not visible‚ return to the x10 objective lens and use the fine adjustment to ensure the Euglena is as sharply focused as possible. Then‚ use the stage control to re-position the slide so the Euglena is directly in the centre of the lens.
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