Q: Answer the following question given this paragraph: Carbohydrates include sugars, starches, and fiber. Sugars and starches are used by the body for energy. One gram of sugar or starch provides 4 Calories of energy. Fiber doesn't provide energy, but it is needed for other uses. At age 13 years, you need about 130 grams of carbohydrates a day. Figure below shows good food sources of each type. Q: How many calories of energy does one gram of sugar or starch provide? Choices: - 5 - 3 - 10 - 4 A:
A: 4

Q: Answer the following question given this paragraph: Q: In aquatic communities, the main producers are photosynthetic protists and what? Choices: - arthropods - eukaryotes - crustaceans - prokaryotes A:
A: prokaryotes

Q: Answer the following question given this paragraph: Q: E. coli uses how many enzymes to take up and metabolize lactose? Choices: - 4 - 11 - 2 - 3 A:
A: 3

Q: Answer the following question given this paragraph: Scientists do the same thing when they classify , or put into categories, living things. Scientists classify organisms not only by their physical features, but also by how closely related they are. Lions and tigers look like each other more than they look like bears, but are lions and tigers related? Evolutionarily speaking, yes. Evolution is the change in a species over time. Lions and tigers both evolved from a common ancestor. So it turns out that the two cats are actually more closely related to each other than to bears. How an organism looks and how it is related to other organisms determines how it is classified. Q: What is the change in a species over time? Choices: - variation - phenomenon - transformation - evolution A:
A: evolution