Sample essays and suggested plans for content 1. The process of diffusion and its importance in living organisms Definition Fick’s Law Types of diffusion e.g. Facilitated diffusion‚ osmosis Gas exchange in unicells‚ fish‚ mammals and plants Digestion and absorption of products Exchange of materials between blood in capillaries and tissues e.g. placenta Transpiration‚ root pressure‚ water and ion uptake by roots Translocation and mass flow hypothesis Osmoregulation by blood and kidney‚ unicells
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Chapter 3 Cloze Notes CORNELL NOTES UNIT 2: Cells Directions: Create a Chapter 3: Cell Structure and Function minimum of 5 questions in this column per page I. Cell Theory (Section 3.1) (average). You can use these questions during class A. Early studies led to the development of the cell theory or tutorial to better understand a topic; or at home to better understand 1. Discovery of Cells your notes and prepare for tests and quizzes. a. Robert __________ (1665)—Used compound microscope to
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troops to respond to outside threats and facilitated trade and commerce. This system of roadways not only connected the empires but promoted the spread of ideas‚ like Christianity in the Roman Empire and Buddhism in China. Both empires were further linked by a network of cities that acted as a nerve system that helped to tie the empire together. The cities were centers of administration and customs emanated into the surrounding area fostering cultural diffusion even though only around twenty percent
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Final Study Guide-PSIO 36 questions Unit 1 1. Vena cava--right atrium--tricuspid valve--right ventricle--pulmonary valve--pulmonary artery--pulmonary vein--left atrium--bicuspid valve--left ventricle--aortic valve--aorta 2. SA node--AV node--AV bundle--right and left bundle branches--conducting myofibers (purkinje fibers) a. pacemaker cells in SA node spontaneously discharge action potentials at a rate of 100-120+ per minute *AP process: 1. depolarization due to na inflow when voltage gated
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25 The Urinary System: Urinary System Organs * Kidneys are major excretory organs * Urinary bladder is the temporary storage reservoir for urine * Ureters transport urine from the kidneys to the bladder * Urethra transports urine out of the body Kidney Functions * Removal of toxins‚ metabolic wastes‚ and excess ions from the blood * Regulation of blood volume‚ chemical composition‚ and pH Kidney Functions * Gluconeogenesis during prolonged fasting * Endocrine functions * Renin: regulation
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between national markets are not only fading but‚ for some products‚ will eventually disappear. Forms of globalization: Globalization of markets vs. Globalization of production Drivers of Globalization * Market factors – convergence of markets‚ diffusion of telecommunication & internet. Growing # of retailers are now showing great flexibility in their strategies for entering new geographic markets * Cost factors – avoiding cost inefficiencies and duplication of effort are two of the most
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produce 2x3c molecules (5steps in the process). Requires energy (2 ATPs) Stage 2 – oxidation of the 3c molecules to pyruvate (5steps in the process). Energy generated (4tps and 2 NADH) Stage 1 Step 1 – trapping glucose‚ glucose enters via facilitated diffusion through specific transport proteins. The family of transporters is known as GLUT‚ GLUT 3 (brain‚ nerve tissue) Low Km allows relatively constant rate of glucose uptake‚ GLUT 2 (liver‚ β-cells pancreas) high Km rate of uptake proportional to
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Human Cell‚ protein production‚ cell organelles and the cell membrane. Structure and cell transport. The cell is the basic structural and functional unit of all known living organisms (See figure 1). It is the smallest unit of life that is classified as a living thing (except virus‚ which consists only from DNA/RNA covered by protein and lipids)‚ and is often called the building block of life. Organisms can be classified as unicellular (consisting of a single cell; including most bacteria) or
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OCR BIOLOGY UNIT F221 Blood tests 1. Put a band (tourniquet) around the arm to make the vein stand out 2. Clean the area around the vein with an alcohol based solution 3. Push a sterile needle‚ attached to a sterile syringe into the vein 4. Pull back the plunger of the syringe to suck the blood into the syringe 5. When the necessary volume of blood has been extracted‚ remove the syringe and needle‚ loosen the tourniquet and press a small ball of cotton wool over the
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Unit 1: Biochemistry Review Chemical Bonding Three types of bonds Ionic bond: 2 oppositely charged atoms (Na and Cl) Polar covalent: Unequally shared electrons (H and O) Non polar covalent: Equally shared electrons (C and C) or similar electronegativity Electronegativity and chemical bonding Electronegativity is a measure of the strength in which an atom can attract electrons. A difference of < 0. 5 is non polar covalent bond A difference of 0.5 – 1.7 is polar covalent bond A difference of > 1
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