Answer the following question given this paragraph: rates The rates at which reactants are consumed and products are formed during chemical reactions vary greatly. We can identify five factors that affect the rates of chemical reactions: the chemical nature of the reacting substances, the state of subdivision (one large lump versus many small particles) of the reactants, the temperature of the reactants, the concentration of the reactants, and the presence of a catalyst. Q: The presence of what, which acts as a trigger, affects the rate of chemical reaction? Choices: - friction - heat - light - catalyst A:
catalyst
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Answer the following question given this paragraph: Sex-linked traits are located on genes on the sex chromosomes. Q: Sex-linked traits are located on genes on what chromosomes? Choices: - reactive - neural - dna - sex A:
sex
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Answer the following question given this paragraph: Figure 34.16 Digestion of carbohydrates is performed by several enzymes. Starch and glycogen are broken down into glucose by amylase and maltase. Sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and lactase, respectively. Q: Digestion of carbohydrates is performed by several enzymes. starch and glycogen are broken down into glucose by amylase and maltase. sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and this? Choices: - lipase - pepsin - hydrolase - lactase A:
lactase
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Answer the following question given this paragraph: Evaporation is a technique used to separate out homogeneous mixtures in which one or more solids are dissolved in a liquid. Typically, the mixture is heated until all of the liquid has vaporized, leaving behind the dissolved solids ( Figure below ). The vapor can also be captured and recondensed into a liquid if desired. Q: What is the term for a technique used to separate out homogeneous mixtures in which one or more solids are dissolved in a liquid? Choices: - transpiration - absorption - distillation - evaporation A:
evaporation
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