transported across the membrane by a carrier protein. Coupled transporters that move solutes in the same direction are called ___ Symporters Which of the following describes the concentration of ions when the cell is at rest? The concentration of potassium is higher inside the cell. Which of the following is the driving
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of potassium in their urine and wonders why. What would you tell her? 4. Why does potassium concentration rise in patients with acidosis? What is this called? What effects does it have? 3. Burn patients have damaged skin cells that are unable to prevent water loss. The kidneys help retain water by using the sodium-potassium pump. It pumps more sodium into the cells so that water can follow the movement of sodium and can be reabsorbed. Sodium ions are exchanged with potassium being
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channels open‚ increase of sodium INTO cell. Phase 1- sodium channels close‚ potassium channels close‚ decrease in potassium and sodium. Calcium channels open‚ increase of calcium into cell. Phase 2- Plateau phase‚ membrane still depolarized (contract). Potassium channels closed‚ L-type calcium channels stay open. Lasts 0.2 seconds/200 milliseconds. Phase 3- second set of potassium channels open‚ potassium decrease. Failing membrane potential cause calcium channels to close‚ calcium decrease
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x150 mm 25 mL graduated cylinder 6 stoppers 6 mL distilled water 6 mL Iron (III) chloride solution (0.02M FeCl3 x 6H2O) 6 mL Iron (II) sulfate solution (0.02M FeSO4 x 7H2O) 1 drop Potassium ferricyanide solution(0.1M K3Fe(CN)6) 1 drop Potassium ferrocyanide solution(0.1M K4Fe(CN)6 x H2O) 1 drop Potassium thiocyanate solution(0.1M KSCN) Procedure: Place 6 test tubes in a test tube rack. Label the tubes 1 through 6. Label tubes 1 through 3 with Fe 2+ and 4 through 6 as Fe 3+.
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EfEFE I ooih oi hoi hoargaagNutrition Facts Okra Amount Per 100 grams Calories 33 2. % Daily Value* Total Fat 0.2 g 0% Saturated fat 0 g 0% Polyunsaturated fat 0 g Monounsaturated fat 0 g Cholesterol 0 mg 0% Sodium 7 mg 0% Potassium 299 mg 8% Total Carbohydrate 7 g 2% Dietary fiber 3.2 g 12% Sugar 1.5 g Protein 1.9 g 3% 3. Vitamin A 14% Vitamin C 38% Calcium 8% Iron 3% Vitamin D 0% Vitamin B-6 10% Vitamin B-12 0% Magnesium 14% 4. *Per cent Daily
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Experiment 3: Solution Calorimetry: Thermodynamics of Potassium Nitrate II. Abstract A determination of thermodynamic variables of KNO3 is presented. KNO3 was heated and dissolved in varying volumes of distilled water. Upon dissolution‚ the KNO3 solution was removed from heat and the temperature was recorded once crystals formed. For each solution‚ ∆G the Ksp were found with the temperature and molarity values. ∆H and ∆S were found through the linearization of the data with
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-75 mV. During resting potential‚ the inside of the axon is negative GRADED POTENTIAL ACTION POTENTIAL Action potential is a fleeting reversal of the membrane potential‚ caused by changes in permeability of the plasma membrane of neuron to potassium and sodium ions causing an electrical impulse to be transmitted along the axon. When a stimulus depolarizes the membrane‚ a few of the voltage-gated sodium channels that are found in the neuronal plasma membrane open permitting sodium ions to
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Elucidating the mechanisms of these diseases will benefit medicine as a whole‚ not just patients with a particular disease. For instance‚ although the inherited long-QT syndrome is not common‚ identifying the underlying defects in the KVLQT1 and HERG potassium channels and the SCN5A sodium channels may benefit the study of ventricular arrhythmias‚ which are responsible for 50‚000 sudden deaths each year in the United States. Likewise‚ al- though a defect in the recently cloned epithelial sodium channel
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obvious. Instead‚ back titration will be employed. The titration of a reducing agent with iodine to produce iodide ion is referred to as an iodometric titration. Iodine is generate by adding a weighed amount of standard potassium iodate (KIO3) to an excess of potassium iodide (KI) and then add adding strong dilute sulphuric acid (H2SO4) to produce iodine as shown below: (1) KIO3(aq) + 5KI(aq) + 3H2SO4(aq) → 3I2(aq) + 3H2O(l) + 3K2SO4(aq) The known excess of I2 generated by the reaction
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Fruits |Amount |Minerals Contained |Vitamins Contained | | |Apple |One medium apple with |Potassium - 195 mg |Vitamin A - 98 IU | |[pic] |skin contains 0.47 |Calcium - 11 mg |Vitamin B1 (thiamine) - 0.031 mg | | |grams of protein‚ 95 |Phosphorus - 20 mg |Vitamin B2 (riboflavin) - 0.047 mg | | |calories
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