biomembranes. 2.Describe the nature of cellular membranes. Cellular membranes are fluid by nature. 3.What is the major lipid found in membranes? Phospholipids 4.What component of the cell membrane might contribute to maintaining the fluidity of the plasma membranes? Chlosterol 5.Describe globular proteins found in the membrane. They are compacted and folded Amino acids. 6.What percentage of all genes encode membrane proteins? 25% 7.Give some of the common functions of cellular membranes
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“The circulatory system is responsible for the delivery of blood‚ and therefore glucose in the blood‚ round the body” (Circulatory system and diabetes). The heart is the main organ in the circulatory system‚ it pumps deoxygenated blood to the lungs and oxygenated lungs to the rest of the body and organs. The hear contains two chambers‚ two atria and two ventricles. Oxygen-poor blood enters the heart through the vena cava and goes into the right atrium‚ the tricuspid valve opens to transport the blood
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Hormone Action Though hormones circulate systemically only cells with receptors for that hormone affected Target cells Tissues with receptors for specific hormone Hormones alter target cell activity Hormone action on target cells may be to Alter plasma membrane permeability and/or membrane potential by opening or closing ion channels Stimulate synthesis of
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Hormones and the Endocrine System 26.1 Chemical and electrical signals coordinate body functions The Endocrine System is a group of interacting glands and tissues throughout the animal body that produce and secrete chemical to initiate and maintain body functions and activities. Chemical Signals -Hormones - are released into the bloodstream by endocrine cells and carried to all locations in the body Consists of all hormone secreting cells Works with the nervous system in regulating body activities
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Case Study 1 1.) Define hypoglycemia. What are hypoglycemic blood glucose values in an adult? Hypoglycemia: Low blood glucose level that results from too much insulin‚ not enough food‚ or excess activity. It is defined as the presence of Whipple’s triad: manifestations consistent with low blood glucose‚ a low plasma glucose concentration‚ and resolution of symptoms or signs after plasma glucose concentration is raised. Four common causes are: 1.) excess insulin‚ 2.) deficient intake or absorption
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Human Physiology Spring 2014 Exam I 1. If red blood cells are placed in a hyperosmotic solution they will: a. shrink b. swell c. can’t tell what the cell will do d. remain the same 2. If red blood cells are placed in a solution that is hypotonic the cells will: a. shrink b. swell c. remain the same d. change depends on type of solutes 3. Using the information presented in lecture which of the following is most likely to be the source for the keto acid necessary for the production
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Laboratory Report The Plasma Membrane I. Introduction The Plasma membrane is the edge of life‚ the boundary that separates the cell from its surroundings. It controls the traffic of materials in and out of the cell. (Reece‚ 2011). It is incredibly thin that is very vital in maintaining the integrity of the cell. Not only does the plasma membrane bind the other organelles‚ it also forms a dynamic structure which gives them their remarkable activity and selectivity. (Hickman‚ 2008). Diffusion
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and should be emphasized that the main components of this are glucose‚ fructose and water and other natural sugars‚ enzymes‚ vitamins and amino acids also contain flavonoids nectar which are antioxidants. Different assumptions which make a custom look to the person consuming sweets is bad‚ one of the most mistake is belief that eating too many sweets causes diabetes‚ but if you are a healthy person‚ your body releases insulin to glucose level what you eat candy. Another of these assumptions is what
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body. B.In males‚ semen and urine are transported through the urethra. C.In females‚ the urethra empties directly into the uterus. D.There is no direct contact between the urinary and reproductive tracts. 1 6. Which substance is found in plasma but NOT in filtrate? A.protein B.urea C.water D.glucose 7. Why does alcohol consumption increase urine production? A.alcohol must be eliminated by excretion B.alcohol inhibits ADH causing diuresis C.alcohol increases the production of
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LAB ONE: Exercise 4 – Endocrine System Activity 1: Metabolism and Thyroid Hormone Part 1: 1. The normal rat had the fastest basal metabolic rate. 2. The metabolic rates differed between the normal rat and the surgically altered rats because the surgically altered rats didn’t have a thyroid or pituitary gland and therefore‚ the normal rat had a faster basal metabolic rate. The results turned out to be the way I predicted them to be. 3. T3 and T4 would be missing in the animal’s blood
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