contribution 0.0845 0.5634 0.3521 1.0000 0.0567 0.225 0.211 0.4927 Break-even ($) = ! [ !! !" !" !" ] = = $"#$‚!!! !.!"#$ $649‚482.44 (b) A firm is about to undertake the manufacture of a product‚ and is weighing three capacity alternatives: small job shop‚ large job shop‚ and repetitive manufacturing. The small job shop has fixed costs of $3‚000 per month‚ and variable costs of $10 per unit. The larger job shop has fixed costs of $12‚000 per month and variable costs of
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oxygen molecules that you would gain from one cubic meter of air at sea level? a. 2 b. 3 c. 5 d. 9 e. 10 Answer: b Textbook Reference: 37.0 Introduction Page: 729 Bloom’s Category: 3. Applying 2. Gas exchange in animals always involves a. lungs. b. breathing movements. c. neural control. d. diffusion between internal body fluids and the outside medium. e. active transport of gases. Answer: d Textbook Reference: Concept 37.1 Fick’s Law of Diffusion Governs Respiratory Gas Exchange Page:
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| |Excretion |At the end of this sub section students should be able to: | |3.4.4 Lungs & Breathing |Draw and identify the breathing tract in humans | | |Give the function of the parts: Nasal and buccal cavities‚ pharynx
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Measuring Respiratory Volumes and Calculating Capacities | Answers | 1. Which of the following processes does not occur during inspiration? a. The diaphragm moves to a flattened position. b. Gas pressure inside the lungs is lowered. c. Inspiratory muscles relax. d. The size of the thoracic cavity increases. | C-Inspiratory muscles relax. | 1. During normal quiet breathing‚ about ______ ml of air moves into and out of the lungs with each breath. a. 300 b. 500 c
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always face of intense competition from existing competitors as well as new entrants. In additional‚ any manufacturers have difficult in expending production capacities and resources. This report aims to recommend how to continue growing business without compromising on quality in high competitive market and limited production capacities and resources. After four year growth in volume‚ from 6‚000 cases in 2008 to 200‚000 cases in 2012‚ the 961 volume of beer sold increased dozens of times. The various
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Smoking causes illness and death‚ among other disadvantages. It is the most preventable lifestyle factor affecting human health. Smoking harms every organ in your body. Your heart‚ blood vessels‚ lungs and fertility are all negatively affected by smoking and the chemicals in cigarettes.Heart and Blood Vessel Health Smoking changes the structure of blood vessels. This can lead to the buildup of plaque that hardens and narrows the vessels‚ causing a disease called atherosclerosis. Atherosclerosis
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air remaining in your lungs is called the residual volume (RV). Why is it impossible to further exhale the RV (that is‚ where is this air volume trapped‚ and why is it trapped?) This "dead space" of air needs to stay in your lungs constantly; otherwise the lung will completely deflate. If the lung has every bit of air sucked out of it‚ it will collapse and need to be re-inflated. 2.) How do you measure a person’s RV in a laboratory? By the air remaining in the lung 3.) Draw a spirogram
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residual volume‚ vital capacity‚ forced expiratory volume‚ minute respiratory volume‚ surfactant‚ and pneumothorax. To describe the role of muscles and volume changes in the mechanics of breathing. To understand that the lungs do not contain muscle and that respirations are therefore caused by external forces. To explore the effect of changing airway resistance on breathing. To study the effect of surfactant on lung function. To examine the factors that cause lung collapse. To understand
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According to the U.S. National Library of Medicine‚ Chronic Obstructive Pulmonary Disease (COPD) is a disease impacting the lungs‚ making it increasingly hard to breathe. The two main forms of COPD are chronic bronchitis and emphysema. The majority of people who suffer from COPD have a combination of both forms which leads to long-term coughing with excessive mucus and progressive lung damage. The main cause of COPD is smoking or long-term exposure to second-hand smoke or heavy pollution‚ but there are
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COPD which is Chronic Obstructive Pulmonary Disease is known as a condition that progressively makes it harder to breathe because the airflow into and out of the lungs is reduced. This usually occurs because the airways and air sacs lose their elastic quality‚ the walls between the air sacs are destroyed‚ the walls of the airways become swollen‚ or if the airways are clogged because they made more mucus than usual. Three main conditions of this disease are emphysema‚ chronic obstructive bronchitis
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