*Question*
Answer the following question given this paragraph:   Enzymes are proteins that increase the rate of biochemical reactions. Enzymes aren’t changed or used up in the reactions, so they can be used to speed up the same reaction over and over again. Enzymes are highly specific for certain chemical reactions, so they are very effective. A reaction that would take years to occur without its enzyme might occur in a split second with the enzyme.   Q: What are proteins that increase the rate of biochemical reactions?   Choices:  - metabolites  - hormones  - amino acids  - enzymes  A:
**Answer**
enzymes

*Question*
Answer the following question given this paragraph:   Wind power uses moving air as a source of energy. Some types of wind power have been around for a long time. People have used windmills to grind grain and pump water for hundreds of years. Sailing ships have depended on wind for millennia. Wind is now used to generate electricity. Moving air can make a turbine spin, just like moving water can. Moving air has kinetic energy. When wind hits the blades of the turbine, the kinetic energy makes the blades move. The turbine spins and creates electricity.   Q: The turbine of a windmill spins and creates what?   Choices:  - grains  - pollution  - lightning  - electricity  A:
**Answer**
electricity

*Question*
Answer the following question given this paragraph:   A trophic level is a feeding position in a food chain or food web. Most food chains and webs have a maximum of four trophic levels. There is less energy and biomass at higher trophic levels.   Q: Most food chains and webs have a maximum of how many trophic levels?   Choices:  - 3  - 10  - 6  - 4  A:
**Answer**
4

*Question*
Answer the following question given this paragraph:   The ideal gas law is used like any other gas law, with attention paid to the unit and making sure that temperature is expressed in Kelvin. However, the ideal gas law does not require a change in the conditions of a gas sample. The ideal gas law implies that if you know any three of the physical properties of a gas, you can calculate the fourth property.   Q: The ideal gas law is used like any other gas law, with attention paid to the unit and making sure that temperature is expressed in kelvin. however, the ideal gas law does not require a change in the conditions of a gas sample. the ideal gas law implies that if you know any three of the physical properties of a gas, you can calculate this?   Choices:  - second  - third  - unrelated  - fourth  A:
**Answer**
