The Digestion process The digestive process is important in maintaining the lives of living organisms and in providing them with needed energy and nutrition. Groups of organs‚ such as the mouth‚ esophagus‚ stomach‚ intestines‚ pancreas‚ and gal bladder work together to perform this complex task. Digestion is the process of breaking down food from large molecules into small ones to make it easier for absorption. The three major steps involved in the digestive process are ingestion‚ digestion‚ and
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Student Name: Brice Waterman Student ID: 4040913 Date: 09/2/2014 Course and Section Number: SCIN131 Lesson 1 Lab: Laboratory Safety & Differences in Density due to Temperature PART 1 Begin by viewing the following Thinkwell video 15.1.1 CIA Demonstration: Laboratory Safety After you watch the above video‚ check out the safety contract at http://www.flinnsci.com/Documents/miscPDFs/Safety_Contract.pdf and then answer the questions below in sufficient detail: (a) (1 pts) Describe some general
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Biology Summer Task Our digestive systems contain glands. These glands produce enzymes. Enzymes are catalysts. Catalysts make chemical reactions happen quicker and easier. Digestive enzymes help us to break down food easier. Our bodies make lots of different digestive enzymes. Each enzyme breaks down a particular food. When an enzyme has broken down one food molecule‚ it can then break down another molecule of the same kind. It can do this over and over again. It makes the reaction happen without
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cellulose?-chitin has a nitrogen containing appendage j. Where can chitin be found?animals exoskeletons Part 2: Lipids Pages 74-77 • What characteristic do all lipids share? • a. What type of reaction forms fats? • What is glycerol? What functional group does it
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know the elements of life – and how the reduction and oxidative of some of these drive bioenergetics oxidize carbon (i.e. glucose source) and reduce oxygen (electron acceptor) (CHNOPS) and iron (Fe; trace element; Fe also important to obtain cellular energy). Nutrition: CHNOPS Trace Elements: Iron (Fe)‚ Ni‚ Mg‚ Mo‚ Mn‚ Ca (important in humans due to osteoblastic activity)‚ Co Occupancy: beat out others for a spot to live‚ e.g. microbiota (normal flora) Resistance: defend against microbes‚ eukaryotes
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CHAPTER 7 LECTURE SLIDES Respiration • Organisms can be classified based on how they obtain energy: • Autotrophs – Able to produce their own organic molecules through photosynthesis • Heterotrophs – Live on organic compounds produced by other organisms • All organisms use cellular respiration to extract energy from organic molecules Cellular respiration • Digestion – enzymes breaking down large macromolecules into smaller ones. • Cellular respiration is a series of reactions
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Gabriela Rios-Martinez March 1‚ 2014 BIO 141 Exam 1 Study Questions Chapter 1: Biology and the Tree of Life (#1 – 4) 1. What is the difference between a hypothesis and a scientific Theory? Between a hypothesis and a prediction? What kinds of hypotheses are useful for scientific investigations that try to explain the natural world‚ and which are not? Give one or more examples of hypotheses that are and are not scientifically useful. (a.) A scientific theory has two components; a pattern
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McDonalds is a worldwide chain that tortures its animals‚ cuts the lifespan of its customers and taking over the world. This is why I believe it should be banned. First‚ let’s start with some statistics: * Last year‚ the company raked in a huge 28 billion US dollars; there are over 33‚000 stores worldwide. Americans consume approximately 1 billion pounds of beef at McDonalds a year- that’s the equivalent of 4 million average weight two year old children. * McDonalds doesn’t follow FDA standards
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The subject of marijuana is a very charged topic‚ both politically and socially. Because of its status as a DSM IV Schedule One drug‚ much of the arguments for or against marijuana use have been the result of speculation and anecdotes. Recently‚ however‚ scientists have been able to study the molecular biology of some of the chemicals in marijuana and elucidate some of the biochemical pathways which they affect. Despite the intense controversy surrounding the subject‚ there have been quite a few
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It can range anywhere for 20 to 80 micrometers thick. Gram-positive cell walls also contains tightly bound polysaccharides‚ such as teichoic acid. Teichoic acid is a polymer of ribitol or glycerol and phosphate. Lipoteichoic acid may also be present in gram-positive cell walls as this molecules binds to lipids in the cell membrane instead of proteins. The molecules found inside of the gram-positive cell wall function in cell wall maintenance
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