*Question*
Answer the following question given this paragraph: Yeast is a facultative anaerobe. This means that alcohol fermentation takes place only if: a. the temperature is close to 37C b. the atmosphere does not contain oxygen c. sugar is provided to the cells d. light is provided to the cells. Q: What kind of anaerobe is yeast? Choices: - mutualistic - obligate - aerobic - facultative A:
**Answer**
facultative

*Question*
Answer the following question given this paragraph: A metal is an element that is a good conductor of heat and electricity. Metals are also malleable, which means that they can be hammered into very thin sheets without breaking, and ductile, which means that they can be drawn into wires. When a fresh surface of any metal is exposed, it will be very shiny, because it reflects light well. This property is referred to as luster. All metals are solid at room temperature except mercury (Hg), which is a liquid. The melting points of different metals vary widely. Mercury has the lowest melting point of all pure metals (39C), and tungsten (W) has the highest (3422C). On the periodic table in Figure above , the metals are shaded blue and are located to the left of the bold stair-step line. About 80 percent of the elements are metals (see examples in Figure below ). Q: Which metal is not a solid even at room temperature? Choices: - iron - copper - aluminum - mercury A:
**Answer**
mercury

*Question*
Answer the following question given this paragraph: The amount of kinetic energy in a moving object depends on its mass and velocity. An object with greater mass or greater velocity has more kinetic energy. The kinetic energy of a moving object can be calculated with the equation:. Q: What two things determine how much kinetic energy an object has? Choices: - its weight and volume - its height and speed - its mass and direction - its mass and velocity A:
**Answer**
its mass and velocity

*Question*
Answer the following question given this paragraph: The rising air cools as it goes higher in the atmosphere. If it is moist, the water vapor may condense. Clouds may form, and precipitation may fall. Q: Does air temperature increase or decrease as it rises higher in the atmosphere? Choices: - both - increase - neither - decrease A:
**Answer**
decrease