Answer the following question given this paragraph: Although the speed of light is constant in a vacuum, light travels at different speeds in different kinds of matter. For example, light travels more slowly in glass than in air. Therefore, when light passes from air to glass, it slows down. If light strikes a sheet of glass straight on, or perpendicular to the glass, it slows down but passes straight through. However, if light enters the glass at an angle other than 90, the wave refracts, or bends. This is illustrated in Figure below . How much light bends when it enters a new medium depends on how much it changes speed. The greater the change in speed, the more light bends. Q: While light travels at different speeds in different kinds of matter, the speed of light is constant in what condition? Choices: - outer space - through glass - under water - vacuum A:
vacuum
Answer the following question given this paragraph: The order of bases in nucleic acids is highly significant. The bases are like the letters of a four-letter alphabet. These "letters" can be combined to form "words. " Groups of three bases form words of the genetic code . Each code word, called a codon, stands for a different amino acid. A series of many codons spells out the sequence of amino acids in a polypeptide or protein ( Figure below ). In short, nucleic acids contain the information needed for cells to make proteins. This information is passed from a body cell to its daughter cells when the cell divides. It is also passed from parents to their offspring when organisms reproduce. Q: Nucleic acids contain the information needed for cells to make what? Choices: - metabolytes - lipids - protons - proteins A:
proteins
Q: Answer the following question given this paragraph: Values of specific heat must generally be looked up in tables, because there is no simple way to calculate them. In general, the specific heat also depends on the temperature. Table 14.1 lists representative values of specific heat for various substances. Except for gases, the temperature and volume dependence of the specific heat of most substances is weak. We see from this table that the specific heat of water is five times that of glass and ten times that of iron, which means that it takes five times as much heat to raise the temperature of water the same amount as for glass and ten times as much heat to raise the temperature of water as for iron. In fact, water has one of the largest specific heats of any material, which is important for sustaining life on Earth. Q: Why must values of specific heat be looked up in tables? Choices: - lack of formulas - difficult to memorize - difficult to understand - difficult to calculate A:
A: difficult to calculate
Question: Answer the following question given this paragraph: Transmutation also occurs when a nucleus undergoes decay. An example of beta decay is the emission of an electron by a carbon-14 nucleus. Q: An example of beta decay is the emission of an electron by a carbon-14 what? Choices: - molecules - ion - protons - nucleus A:
Answer: nucleus
*Question*
Answer the following question given this paragraph: The metals of group 13 (Al, Ga, In, and Tl) are all reactive. However, passivation occurs as a tough, hard, thin film of the metal oxide forms upon exposure to air. Disruption of this film may counter the passivation, allowing the metal to react. One way to disrupt the film is to expose the passivated metal to mercury. Some of the metal dissolves in the mercury to form an amalgam, which sheds the protective oxide layer to expose the metal to further reaction. The formation of an amalgam allows the metal to react with air and water. Q: The formation of an amalgam allows the metal to react with what? Choices: - helium and oxygen - cloth and plastic - blood and sweat - air and water A:
**Answer**
air and water
*Question*
Answer the following question given this paragraph: Q: What is the oxygen-storing protein found in diving mammals' muscles called? Choices: - pigment - hemoglobin - pheromone - myoglobin A:
**Answer**
myoglobin