Eva: What is the structure of skin cells Marilyn: Your skin is the largest known organ in your body. This substance is waterproof and flexible it has three layers to it. They all work together to keep all your organs and tissues inside your body it also keeps infection‚ viruses and bacteria out of your inside of your body. In your skin cells there are little thing to tell the cell what to do. There is a nucleus is the control center of the cell. There is a cell membrane it the holder‚ so it holds
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The word metabolism can also refer to all chemical reactions that occur in living organisms‚ including digestion and the transport of substances into and between different cells‚ in which case the set of reactions within the cells is called intermediary metabolism or intermediate metabolism. Metabolism is usually divided into two categories. Catabolism breaks down organic matter‚ for example to harvest energy in cellular respiration. Anabolism uses energy to construct components of cells such as
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Microbial metabolism is the means by which a microbe obtains the energy and nutrients (e.g. carbon) it needs to live and reproduce. Microbes use many different types of metabolic strategies and species can often be differentiated from each other based on metabolic characteristics. The specific metabolic properties of a microbe are the major factors in determining that microbe’s ecological niche‚ and often allow for that microbe to be useful in industrial processes or responsible for biogeochemical
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muscle metabolism Skeletal muscle is the major tissue responsible for glutamine synthesis in the body [9‚10]. In this context‚ glutamine anabolic effects in the skeletal muscle not only preserve lean mass‚ but also maintain plasma glutamine concentration in the body. Glutamine provides energy substrate to cells with a high turnover‚ nucleic acid precursors to cells of the immune system and is involved in the maintenance of acid-base balance [9‚ 11‚ 12]. The key enzymes in the metabolism of glutamine
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organelle in any eukaryotic cell. It is enclosed in a double membrane and communicates with the surrounding cytosol via numerous nuclear pores. Within the nucleus is the DNA responsible for providing the cell with its unique characteristics. The DNA is similar in every cell of the body‚ but depending on the specific cell type‚ some genes may be turned on or off - that’s why a liver cell is different from a muscle cell‚ and a muscle cell is different from a fat cell. When a cell is dividing‚ the nuclear
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P6- Describe different types of energy transfer For us to do work‚ we need energy. Energy is measured in joules‚ (J) or kilojoules (kJ) Energy exists in many different forums such as Kinetic and potential energy – Kinetic energy is the movement of energy and potential is stored energy‚ energy ready to go. A lawn mower filled with gasoline‚ a car on top of a hill‚ and students waiting to go home from school are all examples of potential energy. Gravitational potential energy is the energy crazed
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Biol 1406‚ Instructor: Alice Zhou Updated 4/18/12 Chapter 10: Photosynthesis 1. Describe the energy transformation that occurs in photosynthesis. Solar energy to chemical energy specifically stored in sugar. SolarChemical energy (sugar) 2. Write the summary equation of photosynthesis. Solar + 6CO2 +6H2O C6H12O6+6O2 (simple) Complex 3. Photosynthesis produces organic sugar molecules. Where does the carbon come from in making the sugars? From carbon dioxide 4. Aerobic
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Sir Safar Lecture 2 Finals Pentose Phosphate Pathway (S. 70) Alternative pathway for glucose oxidation. Similar to glycolysis‚ but instead of having pyruvate as the end product it is diverted to other pathways. Supplier of energy to the cell in the form of NADPH (a reducing power for biosynthesis). It is also referred to as hexose monophosphate shunt. *Fate of glucose 6-phosphate (G 6-P) IN THE PPP (S. 71) Taken out from glycolysis and converted into Ribulose 5-phosphate. With the conversion
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Muscular System: Muscle Metabolism 1. List the three roles of ATP in muscle contraction: 1. _energizing the power stroke of the myosin cross bridge________________________ 2. _disconnecting the myosin head from the binding site on actin at the conclusion of a power stroke_________________ 3. _energizing the calcium ion pump; transporting calcium___________________ 2. The potential energy in ATP is released when the terminal high-energy bond is broken by a process called _hydrolysis________________________
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Monmouth‚ OR 1. Please go to School Wires for this link: http://www.sciencecases.org/atkins/case1.asp 2. Read all of Part I: “Macronutrients and Energy”. When you are finished‚ answer the following questions: a) First‚ find out what nutrients Janine and Mitchell are talking about. Using a biology textbook and the resources listed‚ describe what the following molecules are and what they are used for in the human body. List some specific examples of each. Also list major dietary sources of
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