Ques:Answer the following question given this paragraph: Platelets ( Figure below ) are very small, but they are very important in blood clotting. Platelets are not cells. They are sticky little pieces of larger cells. Platelets bud off large cells that stay in the bone marrow. When a blood vessel gets cut, platelets stick to the injured areas. They release chemicals called clotting factors, which cause proteins to form over the wound. This web of proteins catches red blood cells and forms a clot. This clot stops more blood from leaving the body through the cut blood vessel. The clot also stops bacteria from entering the body. Platelets survive in the blood for ten days before they are removed by the liver and spleen. Q: What part of blood releases clotting factors? Choices: - hemoglobin - white blood cells - erythrocytes - platelets A:

Ans:platelets
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Ques:Answer the following question given this paragraph: Metabolic acidosis is problematic, as lower-than-normal amounts of bicarbonate are present in the blood. The pCO2 would be normal at first, but if compensation has occurred, it would decrease as the body reestablishes the proper ratio of bicarbonate and carbonic acid/CO2. Respiratory acidosis is problematic, as excess CO2 is present in the blood. Bicarbonate levels would be normal at first, but if compensation has occurred, they would increase in an attempt to reestablish the proper ratio of bicarbonate and carbonic acid/CO2. Alkalosis is characterized by a higher-than-normal pH. Metabolic alkalosis is problematic, as elevated pH and excess bicarbonate are present. The pCO2 would again be normal at first, but if compensation has occurred, it would increase as the body attempts to reestablish the proper ratios of bicarbonate and carbonic acid/CO 2. Respiratory alkalosis is problematic, as CO2 deficiency is present in the bloodstream. The bicarbonate concentration would be normal at first. When renal compensation occurs, however, the bicarbonate concentration in blood decreases as the kidneys attempt to reestablish the proper ratios of bicarbonate and carbonic acid/CO2 by eliminating more bicarbonate to bring the pH into the physiological range. Q: Why is respiratory acidosis considered to be problematic? Choices: - causes acid stomach - excess oxygen in blood - causes suffocation - excess co2 in blood A:

Ans:excess co2 in blood
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Ques:Answer the following question given this paragraph: The pressure of a gas in a gas mixture is termed the partial pressure. Q: What is the pressure of gas in a gas mixture termed? Choices: - gaseous energy - gaseous pressure - partial energy - partial pressure A:

Ans:partial pressure
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Ques:Answer the following question given this paragraph: Condensation is the change of state from a gas to a liquid. Q: What is the process of changing something from a gas to a liquid? Choices: - sublimation - combustion - fermentation - condensation A:

Ans:
condensation
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