Answer the following question given this paragraph: A mineral deposit that contains enough minerals to be mined for profit is called an ore . Ores are rocks that contain concentrations of valuable minerals. The bauxite shown in the Figure below is a rock that contains minerals that are used to make aluminum. Q: What type of rock contains concentrations of valuable minerals? Choices: - sedimentary - igneous - metamorphic - ores A:
ores
Answer the following question given this paragraph: Humans have sent spacecraft up to study our star. The SOHO spacecraft has been in operation since 1996. The craft orbits the Sun in step with Earth but closer to it. SOHO has sent back amazing images. Onboard instruments have also sent back mountains of data. The data is mostly about the Sun's outer layers. Q: What year did the soho spacecraft first started to operate? Choices: - 2012 - 2006 - 1987 - 1996 A:
1996
Q: Answer the following question given this paragraph: Q: What are the two types of vesicle transport called? Choices: - dielectric and exocytosis - epithelium and exocytosis - eptocytosis and exocytosis - endocytosis and exocytosis A:
A: endocytosis and exocytosis
Question: Answer the following question given this paragraph: Control of Catabolic Pathways Enzymes, proteins, electron carriers, and pumps that play roles in glycolysis, the citric acid cycle, and the electron transport chain tend to catalyze non-reversible reactions. In other words, if the initial reaction takes place, the pathway is committed to proceeding with the remaining reactions. Whether a particular enzyme activity is released depends upon the energy needs of the cell (as reflected by the levels of ATP, ADP, and AMP). Glycolysis The control of glycolysis begins with the first enzyme in the pathway, hexokinase (Figure 7.19). This enzyme catalyzes the phosphorylation of glucose, which helps to prepare the compound for cleavage in a later step. The presence of the negatively charged phosphate in the molecule also prevents the sugar from leaving the cell. When hexokinase is inhibited, glucose diffuses out of the cell and does not become a substrate for the respiration pathways in that tissue. The product of the hexokinase reaction is glucose-6-phosphate, which accumulates when a later enzyme, phosphofructokinase, is inhibited. Q: Enzymes, proteins, electron carriers, and pumps that play roles in glycolysis, the citric acid cycle, and the electron transport chain tend to catalyze reactions that are what? Choices: - continuous - reversible - changeable - non-reversible A:
Answer: non-reversible
*Question*
Answer the following question given this paragraph: Altitude is height above sea level. The density of air decreases with height. There are two reasons. At higher altitudes, there is less air pushing down from above. Also, gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more. Air density decreases. You can see this in Figure below . Q: Altitude is height above what? Choices: - the earth's core - the earth's surface - the water table - sea level A:
**Answer**
sea level
(Question)
Answer the following question given this paragraph: A: Thermal energy is transferred by conduction from the hot iron to the shirt, from the hot cup to the hand holding it, from the flame of the camp stove to the bottom of the pot as well as from the bottom of the pot to the food inside, and from the feet to the snow. The shirt, hand, pot, food, and snow become warmer because of the transferred energy. Because the feet lose thermal energy, they feel colder. Q: How is thermal energy transferred in every-day, real life situations, such as holding a warm cup? Choices: - decomposition - condensation - oxidation - conduction A:
(Answer)
conduction