1. The benefits of breastfeeding for the infant it provides the appropriate composition and balance of nutrients with high biovailability‚ provides hormones that promote physiological development‚ improves cognitive development‚ protects against a variety of infections‚ may protect against same chronic diseases such as diabetes (both types)‚obesity‚ asthma later in life‚ and protects against food allergies. For the mother it contracts the uterus‚ delays the return of regular ovulation‚ conserves
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Test 1 1. Polypeptide starts on a free ribosome. In the first step‚ the signal sequence emerges from the ribosome and binds to the SRP‚ which stops further translocation until the SRP-ribosome-nascent chain complex can make contact with the ER membrane. The SRP-ribosome then binds to an SRP receptor within the ER membrane during step 2. In the third step SRP is released and the association of the ribosome with a translocon of the ER membrane occurs. These latter events are accompanied by the reciprocal
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Emad Abid Dr. Fuller AP Biology 13 August 2014 Animal Behavior of Isopods 1a) Do terrestrial isopods prefer to stay in a cold or warm environment that is in a neutral (room temperature)‚ mild‚ or extreme temperature difference from room temperature? 1b) If the isopods prefer to be in a mildly warm environment‚ then when they are randomly placed between a warm and cool chamber with only one warm and cold pack (mild temperature difference) on each end of the chamber and are able to move freely‚ they
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Chapter 3 Molecules of Life I. Carbon 1. 6 electrons- (4 valence) has the ability to bond with 4 other elements 2. Hydrocarbons- (contains only C & H) 3. Asymmetric carbon- attached to 4 different atoms or groups of atoms II. Isomers - Compounds having the same molecular formula but different structure and properties 1. Structural- differ in covalent arrangement of their atoms and may differ in location of double bonds 2. Geometric- same structure different arrangement 3. Enantiomer/stereoisomer
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Chapter 5 Identifications & Questions King George III George Grenville Patrick Henry Stamp Act Congress Sons of Liberty Samuel Adams Boston Massacre Crispus Attucks John Adams John Dickinson Letters from a Farmer in Pennsylvania actual representation virtual representation circular letter writs of assistance Olive Branch Petition Gaspeé Incident Mercy Otis Warren Daughters of Liberty non-importation Boston Tea Party First Continental Congress Committees
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immunodeficiency virus c) Microbial ecologist -- studies bacteria that degrade oil d) Microbial physiologist – studies fermentation of sourdough bread e) Molecular biologist – studies recombinant DNA 2) You are observing a cell through a microscope and note that it has not apparent nucleus. You conclude that it most likely a) has a peptidoglycan cell wall b) has a cellulose cell wall c) moves by pseudopods d) is part of a
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Amanda Bynes 2.1 assessment p.5 pg. 38 October 1st 1a. Describe the structure of an atom -Proton‚ neutron‚ electron 1b. An atom of calcium contains 20 protons. How many electrons does it have? -20 2b. Compare the structure of carbon-12 and carbon-13 -Carbon-12 has 6 protons‚ 6 electrons and 6 neutrons. Carbon-14 has 6 protons‚ 6 electrons and 8 neutrons. 4a. What are two types of bonds that hold the atoms within a compound together?
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Module 2.1: Biological Molecules * State the functions of biological molecules in organisms Carbohydrates – energy storage and supply‚ structure (in some organisms) Proteins – Structure‚ transport‚ enzymes‚ antibodies‚ most hormones Lipids – Membranes‚ energy supply‚ thermal insulation‚ protective layers/padding‚ electrical insulation in neurones‚ some hormones Vitamins and minerals – From parts of some larger molecules and take part in some metabolic reactions‚ some act as coenzymes or
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10.1.3 CROSSING OVER Outline the process of crossing over in : Meiosis 1: • Prophase I - homologous chromosomes are paired up tightly into tetrads‚ then crossing over‚ the exchange of genetic material between the DNA in these tetrads occurs‚ forming a chiasmata‚ an x-shaped structure. • Metaphase I - paired chromosomes line up along the equator of a cell‚ the metaphase plate as the spindle microtubulue apparatus pulls them. • Anaphase I - The spindle microtubules pull homologous chromosomes
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The Excretory System • Main functions of the excretory system are: o to concentrate wastes and expel them from the body o to regulate fluids and water within the body • Most metabolic wastes and toxins are dissolved in the body’s internal environment‚ so the maintenance of the body fluids is essential for keeping the body free of waste products enabling it to function properly. Excretion in Invertebrates and Non-mammaliam Vertebrates • Single celled organisms and simple multicellular
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