Cell, Molecular, and Developmental Biology College of Science 2019-2020
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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). -
Bacterial Cell Membrane
BACTERIAL CELL MEMBRANE Dr. Rakesh Sharda Department of Veterinary Microbiology NDVSU College of Veterinary Sc. & A.H., MHOW CYTOPLASMIC MEMBRANE ➢The cytoplasmic membrane, also called a cell membrane or plasma membrane, is about 7 nanometers (nm; 1/1,000,000,000 m) thick. ➢It lies internal to the cell wall and encloses the cytoplasm of the bacterium. ➢It is the most dynamic structure of a prokaryotic cell. Structure of cell membrane ➢The structure of bacterial plasma membrane is that of unit membrane, i.e., a fluid phospholipid bilayer, composed of phospholipids (40%) and peripheral and integral proteins (60%) molecules. ➢The phospholipids of bacterial cell membranes do not contain sterols as in eukaryotes, but instead consist of saturated or monounsaturated fatty acids (rarely, polyunsaturated fatty acids). ➢Many bacteria contain sterol-like molecules called hopanoids. ➢The hopanoids most likely stabilize the bacterial cytoplasmic membrane. ➢The phospholipids are amphoteric molecules with a polar hydrophilic glycerol "head" attached via an ester bond to two non-polar hydrophobic fatty acid tails. ➢The phospholipid bilayer is arranged such that the polar ends of the molecules form the outermost and innermost surface of the membrane while the non-polar ends form the center of the membrane Fluid mosaic model ➢The plasma membrane contains proteins, sugars, and other lipids in addition to the phospholipids. ➢The model that describes the arrangement of these substances in lipid bilayer is called the fluid mosaic model ➢Dispersed within the bilayer are various structural and enzymatic proteins, which carry out most membrane functions. ➢Some membrane proteins are located and function on one side or another of the membrane (peripheral proteins). -
Ecological Developmental Biology and Disease States CHAPTER 5 Teratogenesis: Environmental Assaults on Development 167
Integrating Epigenetics, Medicine, and Evolution Scott F. Gilbert David Epel Swarthmore College Hopkins Marine Station, Stanford University Sinauer Associates, Inc. • Publishers Sunderland, Massachusetts U.S.A. © Sinauer Associates, Inc. This material cannot be copied, reproduced, manufactured or disseminated in any form without express written permission from the publisher. Brief Contents PART 1 Environmental Signals and Normal Development CHAPTER 1 The Environment as a Normal Agent in Producing Phenotypes 3 CHAPTER 2 How Agents in the Environment Effect Molecular Changes in Development 37 CHAPTER 3 Developmental Symbiosis: Co-Development as a Strategy for Life 79 CHAPTER 4 Embryonic Defenses: Survival in a Hostile World 119 PART 2 Ecological Developmental Biology and Disease States CHAPTER 5 Teratogenesis: Environmental Assaults on Development 167 CHAPTER 6 Endocrine Disruptors 197 CHAPTER 7 The Epigenetic Origin of Adult Diseases 245 PART 3 Toward a Developmental Evolutionary Synthesis CHAPTER 8 The Modern Synthesis: Natural Selection of Allelic Variation 289 CHAPTER 9 Evolution through Developmental Regulatory Genes 323 CHAPTER 10 Environment, Development, and Evolution: Toward a New Synthesis 369 CODA Philosophical Concerns Raised by Ecological Developmental Biology 403 APPENDIX A Lysenko, Kammerer, and the Truncated Tradition of Ecological Developmental Biology 421 APPENDIX B The Molecular Mechanisms of Epigenetic Change 433 APPENDIX C Writing Development Out of the Modern Synthesis 441 APPENDIX D Epigenetic Inheritance Systems: -
Standard 2: CELL BIOLOGY – REVIEW of BASICS
Standard 2: CELL BIOLOGY – REVIEW OF BASICS CELL PART OR TYPE OF CELL WHERE FOUND WHAT DOES IT FUNCTION: MISCELLANEOUS ORGANELLE Prokaryotic cell Plant cell LOOK LIKE: Job it does in INFORMATION: things Eukaryotic cell Animal cell Describe or Draw the cell such as color, what it is Both Both made of, size, etc. plasma/cell See diagram Holds cell together Phospholipid bilayer with membrane both both Regulates what goes proteins in/out of cell Semipermeable cytoplasm both Clear thick jelly- Supports/protects both like material in cell cell organelles See diagram Control center nucleus eukaryotic both Contains DNA See diagram Where proteins are ribosome both both made See diagram Process proteins Golgi complex eukaryotic both that go to other /apparatus parts of cell Membrane-bound Digests materials lysosome eukaryotic animal sac of digestive within the cell enzymes Membrane-bound Stores water, food, One large one in plants vacuole eukaryotic both storage area waste and dissolved Many smaller ones in minerals animals endoplasmic Network of Transport materials Can be rough (with reticulum eukaryotic both membrane tubes throughout the cell ribosomes attached) or smooth (without ribosomes) See diagram Where cell respiration Called Powerhouse of cell mitochondria eukaryotic both occurs (releases Makes ATP from energy for cell to use) breaking down glucose See diagram Where photosynthesis Contains chlorophyll chloroplast eukaryotic plant takes place Converts light energy into chemical energy in glucose Some pro- and plant (also fungi Rigid structure -
Introduction to the Cell Cell History Cell Structures and Functions
Introduction to the cell cell history cell structures and functions CK-12 Foundation December 16, 2009 CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide. Using an open-content, web-based collaborative model termed the “FlexBook,” CK-12 intends to pioneer the generation and distribution of high quality educational content that will serve both as core text as well as provide an adaptive environment for learning. Copyright ©2009 CK-12 Foundation This work is licensed under the Creative Commons Attribution-Share Alike 3.0 United States License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/us/ or send a letter to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA. Contents 1 Cell structure and function dec 16 5 1.1 Lesson 3.1: Introduction to Cells .................................. 5 3 www.ck12.org www.ck12.org 4 Chapter 1 Cell structure and function dec 16 1.1 Lesson 3.1: Introduction to Cells Lesson Objectives • Identify the scientists that first observed cells. • Outline the importance of microscopes in the discovery of cells. • Summarize what the cell theory proposes. • Identify the limitations on cell size. • Identify the four parts common to all cells. • Compare prokaryotic and eukaryotic cells. Introduction Knowing the make up of cells and how cells work is necessary to all of the biological sciences. Learning about the similarities and differences between cell types is particularly important to the fields of cell biology and molecular biology. -
Developmental Biology, Genetics, and Teratology (DBGT) Branch NICHD
The information in this document is no longer current. It is intended for reference only. Developmental Biology, Genetics, and Teratology (DBGT) Branch NICHD Report to the NACHHD Council September 2006 U.S. Department of Health and Human Services National Institutes of Health National Institute of Child Health and Human Development The information in this document is no longer current. It is intended for reference only. Cover Image: The figures illustrate several of the animal model organisms used in research supported by the DBGT Branch including: the fruit fly, Drosophila (top, left); the zebrafish, Danio (top, middle); the frog, Xenopus (top, right); the chick, Gallus (bottom, left); and the mouse, Mus (bottom, middle). The human baby (bottom, right) represents the translational research on human birth defects. Drawings by Lorette Javois, Ph.D., DBGT Branch The information in this document is no longer current. It is intended for reference only. TABLE OF CONTENTS EXECUTIVE SUMMARY .......................................................................................................... 1 BRANCH PROGRAM AREAS .......................................................................................................... 1 BRANCH FUNDING TRENDS.......................................................................................................... 2 HIGHLIGHTS OF RESEARCH SUPPORTED AND BRANCH ACTIVITIES.............................................. 3 FUTURE DIRECTIONS FOR THE DBGT BRANCH .......................................................................... -
Evolutionary Developmental Biology 573
EVOC20 29/08/2003 11:15 AM Page 572 Evolutionary 20 Developmental Biology volutionary developmental biology, now often known Eas “evo-devo,” is the study of the relation between evolution and development. The relation between evolution and development has been the subject of research for many years, and the chapter begins by looking at some classic ideas. However, the subject has been transformed in recent years as the genes that control development have begun to be identified. This chapter looks at how changes in these developmental genes, such as changes in their spatial or temporal expression in the embryo, are associated with changes in adult morphology. The origin of a set of genes controlling development may have opened up new and more flexible ways in which evolution could occur: life may have become more “evolvable.” EVOC20 29/08/2003 11:15 AM Page 573 CHAPTER 20 / Evolutionary Developmental Biology 573 20.1 Changes in development, and the genes controlling development, underlie morphological evolution Morphological structures, such as heads, legs, and tails, are produced in each individual organism by development. The organism begins life as a single cell. The organism grows by cell division, and the various cell types (bone cells, skin cells, and so on) are produced by differentiation within dividing cell lines. When one species evolves into Morphological evolution is driven another, with a changed morphological form, the developmental process must have by developmental evolution changed too. If the descendant species has longer legs, it is because the developmental process that produces legs has been accelerated, or extended over time. -
Cell Structure and Function in the Bacteria and Archaea
4 Chapter Preview and Key Concepts 4.1 1.1 DiversityThe Beginnings among theof Microbiology Bacteria and Archaea 1.1. •The BacteriaThe are discovery classified of microorganismsinto several Cell Structure wasmajor dependent phyla. on observations made with 2. theThe microscope Archaea are currently classified into two 2. •major phyla.The emergence of experimental 4.2 Cellscience Shapes provided and Arrangements a means to test long held and Function beliefs and resolve controversies 3. Many bacterial cells have a rod, spherical, or 3. MicroInquiryspiral shape and1: Experimentation are organized into and a specific Scientificellular c arrangement. Inquiry in the Bacteria 4.31.2 AnMicroorganisms Overview to Bacterialand Disease and Transmission Archaeal 4.Cell • StructureEarly epidemiology studies suggested how diseases could be spread and 4. Bacterial and archaeal cells are organized at be controlled the cellular and molecular levels. 5. • Resistance to a disease can come and Archaea 4.4 External Cell Structures from exposure to and recovery from a mild 5.form Pili allowof (or cells a very to attach similar) to surfacesdisease or other cells. 1.3 The Classical Golden Age of Microbiology 6. Flagella provide motility. Our planet has always been in the “Age of Bacteria,” ever since the first 6. (1854-1914) 7. A glycocalyx protects against desiccation, fossils—bacteria of course—were entombed in rocks more than 3 billion 7. • The germ theory was based on the attaches cells to surfaces, and helps observations that different microorganisms years ago. On any possible, reasonable criterion, bacteria are—and always pathogens evade the immune system. have been—the dominant forms of life on Earth. -
Cell Life Cycle and Reproduction the Cell Cycle (Cell-Division Cycle), Is a Series of Events That Take Place in a Cell Leading to Its Division and Duplication
Cell Life Cycle and Reproduction The cell cycle (cell-division cycle), is a series of events that take place in a cell leading to its division and duplication. The main phases of the cell cycle are interphase, nuclear division, and cytokinesis. Cell division produces two daughter cells. In cells without a nucleus (prokaryotic), the cell cycle occurs via binary fission. Interphase Gap1(G1)- Cells increase in size. The G1checkpointcontrol mechanism ensures that everything is ready for DNA synthesis. Synthesis(S)- DNA replication occurs during this phase. DNA Replication The process in which DNA makes a duplicate copy of itself. Semiconservative Replication The process in which the DNA molecule uncoils and separates into two strands. Each original strand becomes a template on which a new strand is constructed, resulting in two DNA molecules identical to the original DNA molecule. Gap 2(G2)- The cell continues to grow. The G2checkpointcontrol mechanism ensures that everything is ready to enter the M (mitosis) phase and divide. Mitotic(M) refers to the division of the nucleus. Cell growth stops at this stage and cellular energy is focused on the orderly division into daughter cells. A checkpoint in the middle of mitosis (Metaphase Checkpoint) ensures that the cell is ready to complete cell division. The final event is cytokinesis, in which the cytoplasm divides and the single parent cell splits into two daughter cells. Reproduction Cellular reproduction is a process by which cells duplicate their contents and then divide to yield multiple cells with similar, if not duplicate, contents. Mitosis Mitosis- nuclear division resulting in the production of two somatic cells having the same genetic complement (genetically identical) as the original cell. -
Chloroplasts Are the Food Producers of the Cell. the Organelles Are Only Found in Plant Cells and Some Protists Such As Algae
Name: ___________________________ Cell #2 H.W. due September 22nd, 2016 Period: _________ Chloroplasts are the food producers of the cell. The organelles are only found in plant cells and some protists such as algae. Animal cells do not have chloroplasts. Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. It is like a solar panel that changes sunlight energy into electric energy. The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast. In the process of photosynthesis, plants create sugars and release oxygen (O2). The oxygen released by the chloroplasts is the same oxygen you breathe every day. Chloroplasts are found in plant cells, but not in animal cells. The purpose of the chloroplast is to make sugars that feed the cell’s machinery. Photosynthesis is the process of a plant taking energy from the Sun and creating sugars. When the energy from the Sun hits a chloroplast and the chlorophyll molecules, light energy is converted into the chemical energy. Plants use water, carbon dioxide, and sunlight to make sugar and oxygen. During photosynthesis radiant energy or solar energy or light energy is transferred into chemical energy in the form of sugar (glucose). You already know that during photosynthesis plants make their own food. The food that the plant makes is in the form of sugar that is used to provide energy for the plant. The extra sugar that the plant does not use is stored as starch for later use. Mitochondria are known as the powerhouses of the cell. -
2019 Cell Biology Syllabus and Course Policies
Cell Biology 2019 Syllabus and Policies 1 of 6 COURSE POLICIES AND SYLLABUS CELL BIOLOGY AS.020.306 SPRING 2019 Learning Goals • Describe the structure and function of cellular components. • Explain how cellular components are localized and organized. • Explain the regulatory mechanisms that enable diversity and dynamics of cellular components. • Recognize, discuss examples, and apply common themes in cell biology. • Propose experiments to answer questions or test hypotheses about cellular structures and functions. • Predict experimental results, interpret experimental data, and use experimental evidence to generate and/or support a hypothesis. Specific learning objectives for each section of the course will be posted on Blackboard. Course material and assessments with be based on the learning goals and objectives. We encourage you to use the learning goals and objectives to guide your learning process during the course. Course Instructors Dr. Katie Tifft [email protected] Office: 183 UTL Dr. Yumi Kim [email protected] Office: 385 UTL Course Administration Dr. Tifft will be the course administrator who will handle course organization and logistics. If you have any questions about the course that are not directly related to the course content, please first check Blackboard and Piazza for relevant information and then contact Dr. Tifft by through Piazza (or by email). Textbook Bruce Alberts, et al. Molecular biology of the cell. Garland Science, 2015. 6th edition. ISBN: 9780815344322 Reading assignments for each class will be posted on Blackboard. The textbook is recommended but not required- all course material will be covered in class or through class materials provided online, but you may find the textbook is a good extra resource. -
An Introduction to the Cell and Molecular Biology (CMB) Subprogram
An Introduction to the Cell and Molecular Biology (CMB) Subprogram SoLS Research Faculty Affiliated with the Cell and Molecular Biology (CMB) Graduate Subprogram • Andrew Andres • Nora Caberoy • Allen Gibbs • Mira Han • Allyson Hindle • Laurel Raftery • Martin Schiller • Jeffery Shen • Boo Shan Tseng • Kelly Tseng • Frank van Breukelen • Mo Weng •Helen Wing Required Courses for All Degrees • Biol 701—Ethics in Scientific Research (1 credit). Required class for all students in both degree programs. • Biol 790—Research Colloquium in Life Sciences Students may take this course for credit (1-2 credits/semester for a maximum of 9 credits toward the degree), but all students (including non-enrolled) must participate each semester. Core Courses for MS and PhD MS students must take at least ONE and PhD students must take at least THREE of the following Core Classes: • Biol 607—Molecular Biology (3 credits) • Biol 625—Genomics (3 credits) • Biol 645—Cell Physiology (3 credits) • Chem 772—Nucleic Acid Chemistry (3 credits) Elective Courses for MS and PhD • MS students must take TWO of the following electives. • PhD Students must take THREE of the following electives. Note: • For students whose research topic focuses predominantly on a cell biological topic, the advisory committee may choose a relevant elective course to replace one of the core courses. • Core courses (above) that are not being used to satisfy Core Requirements may be taken as Electives. • Elective courses must be approved in advance by the student’s Research Advisory Committee. • The Research Advisory Committee may require the student to take specific courses, depending on the person’s academic background and research objectives.