Answer the following question given this paragraph: Gas Exchange across the Alveoli In the body, oxygen is used by cells of the body's tissues and carbon dioxide is produced as a waste product. The ratio of carbon dioxide production to oxygen consumption is the respiratory quotient (RQ). RQ varies between 0.7 and 1.0. If just glucose were used to fuel the body, the RQ would equal one. One mole of carbon dioxide would be produced for every mole of oxygen consumed. Glucose, however, is not the only fuel for the body. Protein and fat are also used as fuels for the body. Because of this, less carbon dioxide is produced than oxygen is consumed and the RQ is, on average, about 0.7 for fat and about 0.8 for protein. The RQ is used to calculate the partial pressure of oxygen in the alveolar spaces within the lung, the alveolar PO Above, 2 the partial pressure of oxygen in the lungs was calculated to be 150 mm Hg. However, lungs never fully deflate with an exhalation; therefore, the inspired air mixes with this residual air and lowers the partial pressure of oxygen within the alveoli. This means that there is a lower concentration of oxygen in the lungs than is found in the air outside the body. Knowing the RQ, the partial pressure of oxygen in the alveoli can be calculated:. Q: In the body, oxygen is used by cells of the body's tissues and carbon dioxide is produced as what? Choices: - oxygen - fuel - food - waste product A:
waste product
Answer the following question given this paragraph: Electric current is measured in coulombs per second, or amperes. Q: Electric current is measured in coulombs per second, also called what? Choices: - voltages - joules - watts - amperes A:
amperes
Q: Answer the following question given this paragraph: Generators may produce either alternating or direct current, but they all change kinetic energy to electrical energy. Q: Generators usually transform kinetic energy into what kind of energy? Choices: - subsequent energy - potential energy - nuclear energy - electrical energy A:
A: electrical energy
Question: Answer the following question given this paragraph: The ability of a solute to dissolve in a particular solvent is called solubility . Many chemical substances are soluble in water. In fact, so many substances are soluble in water that water is called the universal solvent. Water is a strongly polar solvent, and polar solvents are better at dissolving polar solutes. Many organic compounds and other important biochemicals are polar, so they dissolve well in water. On the other hand, strongly polar solvents like water cannot dissolve strongly nonpolar solutes like oil. Did you ever try to mix oil and water? Even after being well shaken, the two substances quickly separate into distinct layers. Q: What is known as the universal solvent? Choices: - oil - air - vinegar - water A:
Answer: water
*Question*
Answer the following question given this paragraph: A: Energy is released when an atom gains an electron. Halogens release the most energy when they form ions. As a result, they are very reactive elements. Q: What happens to energy when an atom gains an electron? Choices: - it is folded - it is used - it increases - it is released A:
**Answer**
it is released
Q: Answer the following question given this paragraph: 32.4 Food Irradiation Ionizing radiation is widely used to sterilize medical supplies, such as bandages, and consumer products, such as tampons. Worldwide, it is also used to irradiate food, an application that promises to grow in the future. Food irradiation is the treatment of food with ionizing radiation. It is used to reduce pest infestation and to delay spoilage and prevent illness caused by microorganisms. Food irradiation is controversial. Proponents see it as superior to pasteurization, preservatives, and insecticides, supplanting dangerous chemicals with a more effective process. Opponents see its safety as unproven, perhaps leaving worse toxic residues as well as presenting an environmental hazard at treatment sites. In developing countries, food irradiation might increase crop production by 25.0% or more, and reduce food spoilage by a similar amount. It is used chiefly to treat spices and some fruits, and in some countries, red meat, poultry, and vegetables. Over 40 countries have approved food irradiation at some level. Food irradiation exposes food to large doses of. Q: Which radiations helps sterilize medical supplies? Choices: - gamma radiation - beta radiation - ions radiation - ionizing radiation A:
A: ionizing radiation