Cardiovascular Anatomy & Physiology I. Structures and Functions Heart Muscle * Has 3 layers (epicardium‚ myocardium‚ and endocardium) and a surrounding sac called the pericardium * Location: In the mediastinum‚ above the diaphragm‚ and is surrounded on both sides by lung * Shape: Resembling triangle‚ with base parallel to the right edge of the sternum Heart Chambers * The right side of the heart is a low pressure system and the left side is a high pressure system
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a.i. Form before the nucleus (no nucleaus‚ no internal membrane structure) I.a.ii. Bacteria I.a.i.1. Some are good I.a.i.1.a. (E. Coli) I.a.i.1.a.i. Waste produces vitamin K which helps blood clotting I.a.i.1.a.ii. MreB I.a.i.1.a.i.1. An actin in bodies‚ builds structure I.a.i.1.a.i.1.1. Control protein‚ makes muscles move‚ found in all shapes bacteria and chromosomes shaped segregation I.a.i.1. Bacteria Phages I.a.i.1.a. Phages that attack bacteria‚ causes DNA from viruses to produce
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The Molecules of Cells (Chapter 3 in your textbook) Without water and carbon-based molecules‚ no life as we know it! Carbon: The Backbone of Life • Living organisms consist mostly of carbon-based compounds Also‚ H‚ N‚ O‚ P‚ and S…… • Carbon is unparalleled in its ability to form large‚ complex‚ and diverse molecules. Why? Principal source of carbon on Earth? • Proteins‚ DNA‚ carbohydrates‚ lipids‚ and other molecules that distinguish living matter are all composed of carbon. C21H36N7O16P3S Coenzyme
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CBSE CLASS X BIOLOGY Nutrition One mark questions with answers Q1. What is a nutrient? Ans1. A nutrient is an organic or an inorganic substance essential for the survival of a living being. Q2. Write down the components of food. Ans2. The major components of food are carbohydrates‚ proteins‚ fats‚ minerals‚ vitamins‚ water and roughage. Q3. A food-stuff gives a red precipitate with Benedict’s solution. Name the nutrient constituent of food indicated by the test. Ans3. Sugar. Q4. A food-stuff
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Anatomy Review: Skeletal Muscle Tissue Graphics are used with permission of: Pearson Education Inc.‚ publishing as Benjamin Cummings (http://www.aw-bc.com) Page 1. Introduction • Skeletal muscle cells have unique characteristics which allow for body movement. Page 2. Goals • To compare and contrast smooth muscle cells‚ cardiac muscle cells‚ and skeletal muscle cells. • To review the anatomy of skeletal muscle. • To examine the connective tissue associated with the skeletal muscle.
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Bio 115 Exam 1 Study Guide These topics will be on the exam. ▪ What are the tenets of cell theory? • Cells are the basic structural and physiological units of all living organisms. • Cells are both distinct entities and building blocks of more complex organisms. OR • All living organisms are composed of one or more cells‚ Cells are the basic units of structure and function in an organism‚ and Cells come only from the reproduction of existing
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of materials to the cell surface is from ER to the Golgi‚ to Golgi vesicles‚ to the plasma membrane Know that cell shape and cellular movements are mediated by the cytoskeleton‚ which is composed of microtubules (tubulin protein)‚ microfilaments (actin protein)‚ and intermediate filaments (keratin protein) Know the major structural differences between animal and plant cells. Lecture 10 Be able to describe the structure of biological membranes (lipid bilayers + membrane proteins). Be able
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Quiz #1 (Pay attention to the answer key) Question 1 In the scientific method‚ the condition which is deliberately changed is referred to as the D. experimental variable. Question 2 Which of the following is not a step in the scientific method? D. Scientific Law Question 3 When an organism’s DNA is permanently altered‚ we say that it E. mutates. Question 4 Which answer choice is not a defining characteristic of life? C. disorder
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The chemistry of life Cell chemistry is hierarchical Inorganic precursors Small organic molecules Macromolecules Supramolecular structures Organelles/structures Cell BIO 1140 – SLIDE 1 Review of macromolecules Carbohydrates Polymers of monosaccharides (polysaccharides) Energy storage Structural chitin starch glycogen Purple pages F23 cellulose BIO 1140 – SLIDE 2 http://www.mpie.de/index.php?id=2957 Monosaccharides CnH2nOn n = 3 to 7 Trioses‚ pentoses and hexoses
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Different Parts of a Plant Cell Plant cells are classified into three types‚ based on the structure and function‚ viz. parenchyma‚ collenchyma and sclerenchyma. The parenchyma cells are living‚ thin-walled and undergo repeated cell division for growth of the plant. They are mostly present in the leaf epidermis‚ stem pith‚ root and fruit pulp. Mature collenchyma cells are living‚ and provide stretchable support to the plant. Lastly‚ sclerenchyma cells (e.g. fiber cells) are hard‚ non-living and
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