Unit 1 – Introduction to the Cell Robert Hooke – built the first microscope (30x magnification); viewed slices of cork called cellula (little rooms). Antoni Van Leeuwenhoek - worked with glass huge improvement in quality of lenses nearly 300x magnification became possible first to observe: * single-celled organisms “animalcules” * protists from pond water * bacteria from his mouth – “father of microbiology” * blood cells * banded pattern in muscle cells * sperm from
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Rotavirus infects mature endothelial cells at the tip of the villi‚ which are present in the lumen of the small intestine. Prior to infection‚ the VP4 spike protein was cleaved into VP5 * 75‚ the body of the spike protein‚ and VP8 *‚ the head of spike proteins‚ by proteolysis with trypsin-like proteases present in the small intestine 75. In the endoplasmic reticulum‚ a cascade of processes is little known‚ with the assembly of VP4 and VP7 on the double layer particle and the removal of the transient
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categories of organic compounds Ruddy Severino There are four major compounds that compose the human body. It is impossible that anything living on earth today can live out these organic compounds. Those compounds are carbohydrates‚ lipids‚ proteins‚ and nucleotides. Each compound has a major important function that is essential to the human body as well as other living organisms on earth. Carbohydrates serve as the main source of energy. Carbohydrates contain carbon‚ hydrogen‚ and oxygen
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Introduction Organic molecules are those primarily made up of carbon‚ hydrogen and oxygen. The common organic compounds of living organisms are carbohydrates‚ proteins‚ lipids‚ and nucleic acids. Each of these macromolecules (polymers) are made of smaller subunits (monomers). The bonds between these subunits are formed by dehydration synthesis. This process requires energy; a molecule of water is removed (dehydration) and a covalent bond is formed between the subunits . Breaking this bond is called
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Partner: Chantelle Date: Thursday‚ Nov 7th Question 1. What happens to protein when they are exposed to very high temperatures? Proteins exposed to very high temperatures become denatured. Meaning they change shape. If a protein is denatured‚ it usually can’t function the way it is supposed to 2. Contrast carbohydrates and proteins in relation to their chemical structure and their functions in the organism? Similarities: both contain a carbon
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Eukaryotic cells > nucleus > bacteria > mitochondrion > viruses > ribosome > proteins > lipids > small molecules > atoms - Structure of a Bacterial Cell a. NO NUCLEUS‚ MITOCHONDRIA‚ b. ribosomes‚ nucleoid‚ Pili‚ flagella‚ cell envelope (cell wall around bacteria) - Structure of an Animal Cell (eukaryotic cell) a. Nucleus - contains genetic material b. Mitochondrion - oxidizes fuel to produce ATP! c. Ribosomes - protein synthesizing machines d. Lysosome - breaks down intracellular debris e
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dynamic role in cellular activity Just like the doors‚ windows‚ and walls of a house Copyright © 2006 Pearson Education‚ Inc.‚ publishing as Benjamin Cummings 1 Fluid Mosaic Model Double bilayer of lipids (fats) with imbedded‚ dispersed proteins Bilayer consists of phospholipids‚ cholesterol‚ and glycolipids Glycolipids are lipids with bound carbohydrate Phospholipids have hydrophobic and hydrophilic bipoles Cholesterol provides fluidity of membrane Copyright © 2006 Pearson Education
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BIO100 Biology Concepts Lab 2: Biochemical Analysis Dec 12 2014 | Logged in as : MAV2020753 Introduction Assessment Feedback Thank you for your participation in this assignment. Your work has been submitted to your instructor. Total score: 25 out of 100‚ 25% Question Feedback Question 1 of 20 The subatomic particles that play the greatest role in cellular chemical reactions are electrons. protons. neutrons. isotopes. 0 out of 5 The correct answer is: electrons. Question 2 of 20 The
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)Lipids 3.)Proteins 4.) Nucleic Acids -On the molecular scale‚ members of three of these classes--- Carbohydrates‚proteins‚ and nucleic acids--- are huge and therefore called Macromolecules. - Architecture of a large biological molecule helps explain how that molecule works. ---------------------------------------------------------------------------------------------------------------------------- Macromolecules are polymers‚ built from monomers - Carbohydrates‚ proteins‚ and nucleic
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mushroom actually blocks the action of the mRNA polymerase. ● ● ● No transcription. No translation. Cellular breakdown‚ cellular death and eventual organ system failure and death of the organism. Since there is no longer any essential cellular protein synthesis (back to the blocking of the mRNA polymerase)‚ cellular function breaks down the cells die‚ but why the liver and kidneys?
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