Answer the following question given this paragraph: What portion of Earth makes up the "plates" in plate tectonics? Again, the answer came about in part due to war. In this case, the Cold War. The scientists set up seismometer networks during the 1950s and early 1960s. The purpose was to see if other nations were testing atomic bombs. Since seismometers measure ground shaking, they also recorded earthquakes. Q: What are the things moving under the earth's mantle that move the crust? Choices: - crystals - ridges - lava channels - plates A:
plates
Answer the following question given this paragraph: Although there is actually little difference between toads and frogs, this animal would most often be called a toad. Frogs have moist skin, while toads have dry, bumpy skin. Q: Moist skin distinguishes frogs from what animal with dry, bumpy skin? Choices: - turtles - snakes - newts - toads A:
toads
Q: Answer the following question given this paragraph: Alkali metals are all solids at room temperature. They are relatively soft and low in density. Q: What property are alkali metals at room temperature? Choices: - mixed - liquid - solid - solid A:
A: solid
Question: Answer the following question given this paragraph: Many enzymes are simple proteins consisting entirely of one or more amino acid chains. Other enzymes contain a nonprotein component called a cofactor that is necessary for the enzyme's proper functioning. There are two types of cofactors: inorganic ions [e. , zinc or Cu(I) ions] and organic molecules known as coenzymes. Most coenzymes are vitamins or are derived from vitamins. Q: Many enzymes are simple proteins consisting entirely of one or more of these? Choices: - alkali acid chains - interaction acid chains - proteins acid chains - amino acid chains A:
Answer: amino acid chains
*Question*
Answer the following question given this paragraph: Figure 2.22 When carbon forms single bonds with other atoms, the shape is tetrahedral. When two carbon atoms form a double bond, the shape is planar, or flat. Single bonds, like those found in ethane, are able to rotate. Double bonds, like those found in ethene cannot rotate, so the atoms on either side are locked in place. Q: When what common element forms single bonds with other atoms, the shape is tetrahedral, and when its atoms form a double bond, the shape is planar? Choices: - oxygen - hydrogen - silicon - carbon A:
**Answer**
carbon
Answer the following question given this paragraph: Q: The sticky stigma at the tip of the carpel receives what? Choices: - bacteria - salt - nitrogen - pollen A:
pollen