Jill lives in St. Louis, which is close to sea level. She decides to spend a month of her summer vacation working in the mountai
ns outside of Denver. After a week in the mountains, what kinds of changes would you expect to see as Jill adapts to the higher altitude? A) decreased hematocritB) decreased blood pressureC) decreased alveolar ventilation rateD) decreased PO2 in the alveoliE) All of the answers are correct.
High altitude is a challenge for the human body due to the progressive reduction in barometric pressure leading to series of important physiologic responses that enable individuals to adapt and secure the oxygen supply to tissues. Reduction in oxygen pressure causes physiological responses in body which include increase in hematocrit. Also, the development of systemic hypertension is influenced by high altitude due to relative low oxygen which has significant consequences on the cardiovascular system and on blood pressure regulation. The lung response to acute altitude exposure also includes hyperventilation which aims at achieving adequate supply of oxygen to the tissues.
Therefore, regular oxygen uptake, greater ventilation, more basic hypoxic ventilation, larger lung volumes, greater diffusing capacities and increased blood pressure are typical of Jill as he adapts to the higher altitude after a month.
I believe the answer is A. this has to do with the law of conservation which states that nothing is either created or destroyed in a chemical reaction. so the mass of the reactants will be equal to the mass of the product
Salad dressing is a <u>suspension & the oil & the particles gets settled when left undisturbed (2nd option.)</u> Oil & water (the other particles) are immiscible, so it's a suspension.
Some salad dressings can be a colloid as well. But, the 2nd option suits better here.
Your answer is wrong because in a suspension, the particles are big & aren't informally distributed throughout the mixture. That's only in a solution/colloid. Suspensions have particles that are unevenly distributed & are big enough to scatter light until they settle down (Tyndall effect).
