Name: MACROMOLECULES Date: I. ELEMENTS AND
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Glossary - Cellbiology
1 Glossary - Cellbiology Blotting: (Blot Analysis) Widely used biochemical technique for detecting the presence of specific macromolecules (proteins, mRNAs, or DNA sequences) in a mixture. A sample first is separated on an agarose or polyacrylamide gel usually under denaturing conditions; the separated components are transferred (blotting) to a nitrocellulose sheet, which is exposed to a radiolabeled molecule that specifically binds to the macromolecule of interest, and then subjected to autoradiography. Northern B.: mRNAs are detected with a complementary DNA; Southern B.: DNA restriction fragments are detected with complementary nucleotide sequences; Western B.: Proteins are detected by specific antibodies. Cell: The fundamental unit of living organisms. Cells are bounded by a lipid-containing plasma membrane, containing the central nucleus, and the cytoplasm. Cells are generally capable of independent reproduction. More complex cells like Eukaryotes have various compartments (organelles) where special tasks essential for the survival of the cell take place. Cytoplasm: Viscous contents of a cell that are contained within the plasma membrane but, in eukaryotic cells, outside the nucleus. The part of the cytoplasm not contained in any organelle is called the Cytosol. Cytoskeleton: (Gk. ) Three dimensional network of fibrous elements, allowing precisely regulated movements of cell parts, transport organelles, and help to maintain a cell’s shape. • Actin filament: (Microfilaments) Ubiquitous eukaryotic cytoskeletal proteins (one end is attached to the cell-cortex) of two “twisted“ actin monomers; are important in the structural support and movement of cells. Each actin filament (F-actin) consists of two strands of globular subunits (G-Actin) wrapped around each other to form a polarized unit (high ionic cytoplasm lead to the formation of AF, whereas low ion-concentration disassembles AF). -
Macromolecules of Life Worksheet
Test Your Knowledge: Macromolecules of Life For Anatomy & Physiology I Biological Macromolecules, Fill in the blank: Macromolecule Monomer Elements Present Function Examples Carbohydrates C,H,O Lipids Fats, Oils, Phospholipids, Cholesterol, Grease, Waxes, Steroids Proteins Amino Acids Nucleic Acids Genetic Information Carbohydrates are classified by __________. The most common simple sugars are glucose, galactose and fructose that are made of a single sugar molecule. These can be classified as __________. Sucrose and __________ are classified as disaccharides; they are made of two monosaccharides joined by a dehydration reaction. The most complex carbohydrates are starch, __________ and cellulose, classified as __________. Lipids most abundant form are __________. Triglycerides building blocks are 1 __________ and 3 __________ per molecule. If a triglyceride only contains __________ bonds that contain the maximum number of __________, then it is classified as a saturated fat. If a triglyceride contains one or more __________ bonds, then it is classified as an unsaturated fat. Lipids are also responsible for a major component of the cell membrane wall that is both attracted to and repelled by water, called __________. The tail of this structure is made of 2 __________, that are water insoluble (hydrophobic). The head of this structure is made of a single __________, that is water soluble (hydrophilic). Proteins building blocks are amino acids that are held together with __________ bonds. These are covalent bonds that link the amino end of one amino acid with the carboxyl end of another. Their overall shape determines their __________. The complex 3D shape of a protein is called a __________. -
Hypothesis Paper Many Chemistries Could Be Used to Build Living
ASTROBIOLOGY Volume 4, Number 2, 2004 © Mary Ann Liebert, Inc. Hypothesis Paper Many Chemistries Could Be Used to Build Living Systems WILLIAM BAINS ABSTRACT It has been widely suggested that life based around carbon, hydrogen, oxygen, and nitrogen is the only plausible biochemistry, and specifically that terrestrial biochemistry of nucleic acids, proteins, and sugars is likely to be “universal.” This is not an inevitable conclusion from our knowledge of chemistry. I argue that it is the nature of the liquid in which life evolves that defines the most appropriate chemistry. Fluids other than water could be abun- dant on a cosmic scale and could therefore be an environment in which non-terrestrial bio- chemistry could evolve. The chemical nature of these liquids could lead to quite different biochemistries, a hypothesis discussed in the context of the proposed “ammonochemistry” of the internal oceans of the Galilean satellites and a more speculative “silicon biochemistry” in liquid nitrogen. These different chemistries satisfy the thermodynamic drive for life through different mechanisms, and so will have different chemical signatures than terrestrial biochemistry. Key Words: Carbon, hydrogen, oxygen, and nitrogen life—Planetary liquid— Silicon. Astrobiology 4, xxx–xxx. INTRODUCTION ISCUSSIONS of nonterrestrial life generally as- Dsume that the biochemistry of life will be similar to that which we see on Earth. Almost all There is a famous book published about writers assume that carbon is the central element 1912 by Lawrence J. Henderson . in which in any plausible biochemistry, and that its com- Henderson concludes that life necessarily bination with hydrogen, nitrogen, and oxygen is must be based on carbon and water, and the core of any living system. -
Molecular Biology and Applied Genetics
MOLECULAR BIOLOGY AND APPLIED GENETICS FOR Medical Laboratory Technology Students Upgraded Lecture Note Series Mohammed Awole Adem Jimma University MOLECULAR BIOLOGY AND APPLIED GENETICS For Medical Laboratory Technician Students Lecture Note Series Mohammed Awole Adem Upgraded - 2006 In collaboration with The Carter Center (EPHTI) and The Federal Democratic Republic of Ethiopia Ministry of Education and Ministry of Health Jimma University PREFACE The problem faced today in the learning and teaching of Applied Genetics and Molecular Biology for laboratory technologists in universities, colleges andhealth institutions primarily from the unavailability of textbooks that focus on the needs of Ethiopian students. This lecture note has been prepared with the primary aim of alleviating the problems encountered in the teaching of Medical Applied Genetics and Molecular Biology course and in minimizing discrepancies prevailing among the different teaching and training health institutions. It can also be used in teaching any introductory course on medical Applied Genetics and Molecular Biology and as a reference material. This lecture note is specifically designed for medical laboratory technologists, and includes only those areas of molecular cell biology and Applied Genetics relevant to degree-level understanding of modern laboratory technology. Since genetics is prerequisite course to molecular biology, the lecture note starts with Genetics i followed by Molecular Biology. It provides students with molecular background to enable them to understand and critically analyze recent advances in laboratory sciences. Finally, it contains a glossary, which summarizes important terminologies used in the text. Each chapter begins by specific learning objectives and at the end of each chapter review questions are also included. -
The Structure and Function of Large Biological Molecules 5
The Structure and Function of Large Biological Molecules 5 Figure 5.1 Why is the structure of a protein important for its function? KEY CONCEPTS The Molecules of Life Given the rich complexity of life on Earth, it might surprise you that the most 5.1 Macromolecules are polymers, built from monomers important large molecules found in all living things—from bacteria to elephants— can be sorted into just four main classes: carbohydrates, lipids, proteins, and nucleic 5.2 Carbohydrates serve as fuel acids. On the molecular scale, members of three of these classes—carbohydrates, and building material proteins, and nucleic acids—are huge and are therefore called macromolecules. 5.3 Lipids are a diverse group of For example, a protein may consist of thousands of atoms that form a molecular hydrophobic molecules colossus with a mass well over 100,000 daltons. Considering the size and complexity 5.4 Proteins include a diversity of of macromolecules, it is noteworthy that biochemists have determined the detailed structures, resulting in a wide structure of so many of them. The image in Figure 5.1 is a molecular model of a range of functions protein called alcohol dehydrogenase, which breaks down alcohol in the body. 5.5 Nucleic acids store, transmit, The architecture of a large biological molecule plays an essential role in its and help express hereditary function. Like water and simple organic molecules, large biological molecules information exhibit unique emergent properties arising from the orderly arrangement of their 5.6 Genomics and proteomics have atoms. In this chapter, we’ll first consider how macromolecules are built. -
Geology 111 – Discovering Planet Earth
Geology 111 – Discovering Planet Earth A1) Early History of the Earth The earth and the rest of the solar system were formed about 4.57 billion years ago from an enormous cloud of fragments of both icy and rocky material which was produced from the explosions (super novae) of one or more large stars - [see page 11]1. It is likely that the proportions of elements in this material were generally similar to those shown in the diagram below. Although most of the cloud was made of hydrogen and helium, the material that accumulated to form the earth also included a significant amount of the heavier elements, especially elements like carbon, oxygen, iron, aluminum, magnesium and silicon2. As the cloud started to contract, most of the mass accumulated towards the centre to become the sun. Once a critical mass had been reached the sun started to heat up through nuclear fusion of hydrogen into helium. In the region relatively close to the sun - within the orbit of what is now Mars - the heat was sufficient for most of the lighter elements to evaporate, and these were driven outward by the solar wind to the area of the orbits of Jupiter and the other gaseous planets. As a result, the four inner planets - Mercury, Venus, Earth and Mars are "rocky" in their composition, while the four major outer planets, Jupiter, Saturn, Neptune and Uranus are "gaseous". As the ball of fragments and dust that was to eventually become the earth grew, it began to heat up - firstly from the heat of colliding particles - but more importantly from the heat generated by radioactive decay (fission) of uranium, thorium, and potassium (figure below). -
Chapter 2 Introduction to Some Basic Features of Genetic Information
Chapter 2 Introduction to some basic features of genetic information: From DNA to proteins 1 1, 2 1, 3 DAVID QUIST, KAARE M. NIELSEN AND TERJE TRAAVIK 1 THE NORWEGIAN INSTITUTE OF GENE ECOLOGY (GENØK), TROMSØ, NORWAY 2 DEPARTMENT OF PHARMACY, UNIVERSITY OF TROMSØ, NORWAY 3 DEPARTMENT OF MICROBIOLOGY AND VIROLOGY, UNIVERSITY OF TROMSØ, NORWAY Molecular biology is the study of biology at a molecular level, with the aim of understanding the interactions between the various systems of a cell, including the interrelationship and regulation of DNA, RNA and protein synthesis. In general terms, DNA (deoxyribonucleic acid) is the basic genetic information macromolecule of the cell. It provides the rudimentary instructions for all kinds of biochemical functions, from making proteins to regulatory functions. DNA is found in every cell and every cell type and organism, from single-celled organisms (prokaryotes, e.g. bacteria), to larger multicellular organisms (eukaryotes, e.g. seaweeds, fungi, plant, animals) that can have many different cell and tissue types.1 DNA contains the genetic ‘code’ of information that makes each species unique. Smaller variations in the DNA can lead to minor differences among individuals of the same species. The combination of specific DNA composition, epigenetic changes (see Chapter 8) and environmental influences determine an organism’s appearance and development. In this book, we discuss how the main carrier of heritable information (DNA) and the environment interact, with particular emphasis on how genetic engineering may intentionally or unintentionally affect this interaction. This chapter focuses on DNA, RNA and the concept of genes. It is structured as follows: 1. -
SYNTHETIC BIOLOGY and ITS POTENTIAL IMPLICATIONS for BIOTRADE and ACCESS and BENEFIT-SHARING ©2019, United Nations Conference on Trade and Development
UNITED NATIONS CONFERENCE ON TRADE AND DEVELOPMENT SYNTHETIC BIOLOGY AND ITS POTENTIAL IMPLICATIONS FOR BIOTRADE AND ACCESS AND BENEFIT-SHARING ©2019, United Nations Conference on Trade and Development. All rights reserved. The trends, figures and views expressed in this publication are those of UNCTAD and do not necessarily represent the views of its member States. The designations employed and the presentation of material on any map in this work do not imply the expression of any opinion whatsoever on the part of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. This study can be freely cited provided appropriate acknowledgment is given to UNCTAD. For further information on UNCTAD’s BioTrade Initiative please consult the following website: http://www.unctad. org/biotrade or contact us at: [email protected] This publication has not been formally edited. UNCTAD/DITC/TED/INF/2019/12 AND ITS POTENTIAL IMPLICATIONS FOR BIOTRADE AND ACCESS AND BENEFIT-SHARING iii Contents Acknowledgements ................................................................................................................................iv Abbreviations ...........................................................................................................................................v EXECUTIVE SUMMARY ............................................................................................. vi SECTION 1: INTRODUCTION TO BIOTRADE, -
The Macromolecule Diet
The Macromolecule Diet PRE-LAB Refer to the Background, your notes & textbook to answer the following questions. 1. Complete the following summary chart: Macromolecule Monomer(s) Polymer(s) Primary Common Function Dietary Sources Carbohydrates Lipids Proteins Nucleic Acids ----------------------- 2. Which two macromolecules are important for providing energy for cells? 3. Which two macromolecules are important for providing structure and function for cells? Read through the Introduction, Background & Procedure for this lab before answering the following questions. 4. Which two macromolecules will you be testing in this lab? 5. What will you be directly measuring in the lab? 6. What does an increase in water temperature indicate? 7. Based on your knowledge of the functions of the macromolecules, make a prediction about how each food source will affect a temperature change in the water. DATA Table 1. Mass of Food & Food Holder Mass Burned (g) Food Item Initial Mass (g) Final Mass (g) = Initial Mass – Final Mass Marshmallow (Carbohydrate) Cheeto (Lipid) Table 2. Change in Water Temperature Marshmallow (Carbohydrate) Cheeto (Lipid) Time (minutes) Temperature Time (minutes) Temperature (°C) (°C) 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 Change In Change In Temperature = Temperature = ANALYSIS OF RESULTS 1. Calculate the mass of food burned for each macromolecule by subtracting the final mass from the initial mass. Record each value in Table 1. 2. Calculate the change in temperature of the water for each food item tested by subtracting the temperature at 0 minutes from the final temperature when the food stopped burning. -
Macromolecule Notes
Carbohydrates Notebook page 14 Monomer Building Block: Monosaccharide (single sugar) Function: -provides and stores energy -structural support for plants (cellulose) Carbohydrates Examples: • Monosaccharide • (1 sugar): glucose or fructose • Disaccharide • (2 sugars): sucrose • Polysaccharide • (long chains): starch, cellulose • Found in fruits, veggies, grains Carbohydrates Other info: •Made of C, H, and O •In the ratio of C: 2 H: 1 O •Example: C6H12O6 •Example: C12H22O11 Carbohydrates Pictures: MONO DI Lipids Notebook page 15 Monomer Building Block: 3 Fatty acids and glycerol made of: C, H, O Function: -stores lots of energy -part of cell membrane Lipids Examples: • Fats: store energy • Steroids: make up cell membranes • Waxes • Chlorophyll • Pigments—absorb light Lipids Other info: • Nonpolar • Cannot dissolve in water • can be: • Solid (saturated fat) • Liquid (unsaturated fat) Lipids Pictures: glycerol 3 fatty acids Proteins Notebook page 16 Monomer Building Block: • Amino acids There are 20 different amino acids • Made of: • C, H, O, N Function and examples: • Enzymes – speed up chemical reactions • Collagen – skin, tendons, ligaments, bones • Structural – hair, muscles, blood clots • Antibodies – protect against infection Proteins Fold into compact shapes Proteins Held together by peptide bonds Nucleic Acids Notebook page 17 Monomer Building Block: • Nucleotides • Sugar • Phosphate • Base • Made of: • C, H, O, N, P Nucleic Acids • Function & Examples: • Holds instructions for building proteins which make up traits of living things • DNA: stores hereditary information • In the nucleus of every cell of your body • RNA: helps make proteins Nucleic Acids OTHER INFO: • All cells have both DNA and RNA! Picture: ATP Notebook page 18 • Monomer Building Blocks: • Nitrogen base -adenine • Sugar - ribose • 3 phosphate groups ATP Adenosine TriosPhosphate • Energy a cell can use • Energy is temporarily stored in ATP and released when the third phosphate is broken off. -
19126634.Pdf
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Estudo Geral Analytical Biochemistry 385 (2009) 176–178 Contents lists available at ScienceDirect Analytical Biochemistry journal homepage: www.elsevier.com/locate/yabio Notes & Tips Biosensor plates detect mitochondrial physiological regulators and mutations in vivo Anabela P. Rolo a, Carlos M. Palmeira a, Gino A. Cortopassi b,* a Cen ter for Neu ro sci ences and Cell Biol ogy, Depart ment of Zool ogy, Uni ver sity of Coim bra, 3004-517 Coim bra, Por tu gal b VM: Molec u lar Bio sci ences, Uni ver sity of Cal i for nia at Davis, 1 Shields Ave nue, Davis, CA 95616, USA article info abstract Article history: The mea sure ment of mito chon drial activ ity in living cells is usu ally not straight for ward, even though Received 15 September 2008 it is quite impor tant in phys i o log i cal and path o phys i o log i cal pro cesses. We describe a high-through put Available online 7 October 2008 method for mea sure ment of mito chon drial oxy gen con sump tion in living cells, based on the Bec ton– Dick in son Bio sen sor plates. © 2008 Else vier Inc. All rights reserved. Mito chon dria are the primary energy-gen er at ing sys tem in The Bec ton–Dick in son Bio sen sor plates were orig i nally most eukary otic cells. As the site of oxi da tive phos phor y la tion, described in 2000 [2] and have been used mostly to mon i tor cell these dou ble-mem brane organ elles pro vide a highly efficient route pro lif er a tion and to per form cyto tox ic ity and via bil ity assays [2–4]. -
PDF (Chapter 1
Chapter 1 Introduction 24 DNA Structure and Function Deoxyribonucleic acid (DNA) is a biological macromolecule that contains genetic information encoding for the entire structure and function of all known organisms. Various biological characteristics are accounted for by individual genes made up of specific sequences of DNA that together provide a blueprint for life, the full set of which is called a genome. DNA’s primary structure consists of a backbone of alternating 2-deoxyribose sugar units and phosphate residues, which are joined by phosphodiester bonds at the 3’ and 5’ positions of the sugar. Attached to each sugar at the 1’ position is one of four nucleobases: adenine (A), cytosine (C), guanine (G), or thymine (T). As it typically exists in nature, double-stranded DNA (dsDNA) contains two antiparallel strands of DNA in a double helix, forming a series of specific hydrogen bonding interactions between complementary nucleobases: A and T are specific for each other, as are C and G. O major groove O P O H O N N H O O AO N N H NN TO major groove O O major groove N N N O P O H O T H H O O minorN groove O N N O P O A O O N N N O O N O P O O G H H N O mminorinor ggrooveroove N N H O N N H O P O major groove H H C O O N O N O H O N O N H N N O C N N G O P O O H N O H minor groove Figure 1.1: The 3-D structure of helical dsDNA1 showing the backbone in blue and base pairs in gray, along with the minor and major grooves indicated and a set of base pairs highlighted (left), and the specific pairing of nucleobases attached to the sugar-phosphate DNA backbone (right).