Key Learning: All living things are made up of one or more cells. Cells come in a variety of shapes and sizes that suit their diverse functions. Cell membranes help organisms maintain homeostasis by controlling what substances enter or leave cells. UEQ: How can we describe the relationship between structure and function in prokaryotic and eukaryotic cells? Concept 1: Cell Structure and Function SC.912.L.14.3 SC.912.L.14.2 Content coverage LEQ: Number 1: What is the relationship between
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serum calcium Which drug would be least effective in lowering a client’s serum potassium level? A. Glucose and insulin B. Polystyrene sulfonate (Kayexalate) C. Calcium glucomite D. Aluminum hydroxide 13. A nurse is directed to administer a hypotonic intravenous solution. Looking at the following labeled solutions‚ she should choose A. 0.45% NaCl B. 0.9% NaCl C. D5W D. D5NSS 14. A patient is hemorrhaging from multiple trauma sites. The nurse expects that compensatory mechanisms associated
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Lab 7: The Kidney’s Role in Fluid Balance Introduction The renal system performs a vital role in homeostasis. The kidneys’ ability to retain valuable constituents and expel metabolic wastes from the body enables this system to regulate the volume‚ osmolarity‚ and pH of body’s internal fluid environment (Sherwood‚ 2007‚ p. 511). The functional unit of the kidney‚ referred to as the nephron‚ is composed of both tubular components—Bowman’s capsule proximal tubule‚ loop of Henle‚ the distal tubule
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NOTES Biology Cell is the basic structural unit of life. Cork is a substance which comes from the bark of a tree. In 1665‚ Robert Hooke made the observation of a cell through a self designed microscope. Cell is a Latin word which means ‘a little room’. Important: Cells were first discovered by Robert Hooke in 1665. Leeuwenhoek (1674)‚ with the improved microscope‚ discovered the free living cell in pond water for first time. Robert Brown in 1831 discovered the nucleus in the
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and vinegar the egg was larger after remaining in the water. This is because the distilled water expands the shell. Water not only expands the shell of a egg‚ but it is also used to sprinkle fresh vegetables at markets. This is because water is hypotonic to the plant cells. Water has fewer solutes and a higher concentration of water than the inside of the plant cells. Causing more water to diffuse into the plant cells than the amount of water that diffuses out of the cells. More water inside the
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BIOLOGY – TRANSPORT ACROSS MEMBRANE define diffusion and describe its role in nutrient uptake and gaseous exchange in plants and humans define osmosis and describe the effects of osmosis on plant and animal tissues define active transport and discuss its importance as an energy-consuming process by which substances are transported against a concentration gradient‚ as in ion uptake by root hairs and uptake of glucose by cells in the villi . A cell is surrounded by a layer of cell surface membrane
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(i.e. the medium is a hypotonic solution) surrounding the cell then osmosis will result in the cell gaining water. The water molecules are free to pass across the cell membrane in both directions‚ but more water molecules will enter the cell than will diffuse out with the result that water enters the cell‚ which will then swell up and could possibly burst. 2. If the water concentration inside the cell is the same as that in the surrounding medium (i.e. the medium is a isotonic solution) there will
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1. Identification of Some Macromolecules 1) What are 2 types of treatment controls‚ and explain each. Positive control: gives positive result if experimental conditions were followed correctly Negative control: gives negative result if experimental conditions were followed correctly 2) What are the most abundant elements in living material? Carbon‚ Hydrogen‚ Oxygen‚ Nitrogen‚ Sulfur and Phosphorus 3) What are the 4 major biological macromolecules? Carbohydrates (monosaccharides &
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Chapter 5 Assignment 1. What is energy? What are the three forms of energy? Energy is the capacity to do work. There are four types of energy according to the powerpoint. They are Kinetic energy (energy of motion)‚ potential energy (stored energy)‚ thermal energy (heat)‚ and chemical energy (potential energy of molecules). 2. State the First and Second Laws of Thermodynamics. Include entropy in your explanation. The first law states that energy can neither be created nor destroyed it can
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1) Homeostasis is the condition in which the body maintains a. changing state‚ within an unlimited range. b. an equilibrium point that can change over a narrow range that is compatible with maintaining life c. an equilibrium change that balances external and internal environment such that values of each are equated 2) Anabolism is the a. breakdown of matter. b. expulsion of matter. c. synthesis of matter. d. All of the answers are correct. 3) The sum
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