Q: Answer the following question given this paragraph: In glycolysis, glucose is split into two molecules of pyruvate. This results in a net gain of two ATP molecules. Q: In glycolysis, glucose is split into two molecules of pyruvate. this results in a net gain of? A:

OPTIONS:
- four atp molecules
- six atp molecules
- three atp molecules
- two atp molecules

A: two atp molecules

Q: Answer the following question given this paragraph: When continental crust is pulled apart, it breaks into blocks. These blocks of crust are separated by normal faults. The blocks slide up or down. The result is alternating mountain ranges and valleys. This topography is known as basin-and-range ( Figure below ). The area near Death Valley, California is the center of a classic basin-and-range province ( Figure below ). Q: When continental crust is pulled apart, it breaks into blocks that are separated by what? A:

OPTIONS:
- layers
- levels
- holes
- faults

A: faults

Q: Answer the following question given this paragraph: Density is an important physical property of matter. It reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter has greater density. Differences in density of matter explain many phenomena, not just why helium balloons rise. For example, differences in density of cool and warm ocean water explain why currents such as the Gulf Stream flow through the oceans. You can see a colorful demonstration of substances with different densities at this URL:. Q: What term describes how closely packed the particles of matter are? A:

OPTIONS:
- range
- mass
- space
- density

A: density

Q: Answer the following question given this paragraph: In this equation, the letters A and B represent the reactants that begin the reaction, and the letter C represents the product that is synthesized in the reaction. The arrow shows the direction in which the reaction occurs. Q: What term is used to describe the sequence of elementary steps that together comprise an entire chemical reaction? A:

OPTIONS:
- source mechanism
- elemental mechanism
- potassium mechanism
- reaction mechanism

A:
reaction mechanism