Problem:OPTIONS:
- extensive compounds
- dynamic properties
- fantastic properties
- extensive properties

Answer the following question given this paragraph: Extensive properties vary according to the amount of matter present. Examples of extensive properties include mass, volume, and length. Q: What are mass, volume, and length an example of? A:
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A: extensive properties

Problem:OPTIONS:
- cardiac
- immune
- proteins
- reproductive

Answer the following question given this paragraph: Sperm are male gametes, or reproductive cells. Sperm form when certain cells in the male reproductive system divide by meiosis to form haploid cells. Being haploid means they have half the number of chromosomes of other cells in the body. An adult male may produce millions of sperm each day!. Q: What type of cells are gametes? A:
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A: reproductive

Problem:OPTIONS:
- cells
- minerals
- acids
- proteins

Answer the following question given this paragraph: Ion Transport The Na+, K+, Mg2+, and Ca2+ ions are important components of intracellular and extracellular fluids. Both Na+ and Ca2+ are found primarily in extracellular fluids, such as blood plasma, whereas K + and Mg2+ are found primarily in intracellular fluids. Substantial inputs of energy are required to establish and maintain these concentration gradients and prevent the system from reaching equilibrium. Thus energy is needed to transport each ion across the cell membrane toward the side with the higher concentration. The biological machines that are responsible for the selective transport of these metal ions are complex assemblies of proteins called ion pumps. Ion pumps recognize and discriminate between metal ions in the same way that crown ethers and cryptands do, with a high affinity for ions of a certain charge and radius. Defects in the ion pumps or their control mechanisms can result in major health problems. For example, cystic fibrosis, the most common inherited disease in the United States, is caused by a defect in the transport system (in this case, chloride ions). Similarly, in many cases, hypertension, or high blood pressure, is thought to be due to defective Na+ uptake and/or excretion. If too much Na+ is absorbed from the diet (or if too little is excreted), water diffuses from tissues into the blood to dilute the solution, thereby decreasing the osmotic pressure in the circulatory system. The increased volume increases the blood pressure, and ruptured arteries called aneurysms can result, often in the brain. Because high blood pressure causes other medical problems as well, it is one of the most important biomedical disorders in modern society. For patients who suffer from hypertension, low-sodium diets that use NaCl substitutes, such as KCl, are often prescribed. Although KCl and NaCl give similar flavors to foods, the K + is not readily taken up by the highly specific Na+-uptake system. This approach to controlling hypertension is controversial, however,. Q: Ion pumps, the biological machines responsible for the selective transport of metal ions, are complex assemblies of what? A:
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A: proteins

Problem:OPTIONS:
- they stick together
- they rise
- they magnetize
- they move apart

Answer the following question given this paragraph: Look at the skateboarders in Figure below . When they push against each other, it causes them to move apart. The harder they push together, the farther apart they move. This is an example of Newton's third law of motion. Q: When two skateboarders push against each other what happens? A:
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A:
they move apart