ACT Science: Data Representation

According to fig 2 which mineral would be found in rocks of medium grade

• Muscovite

• Biotite

• Kyanite

• Plagioclase

According to Fig 1, Fascies G rock will most likely form under which of the following pressure and temperature conditions?

• Pressure 3kb Temperature 800C

• Pressure 5kb Temperature 400C

• Pressure 8kb Temperature 1000C

• Pressure 11kb Temperature 600C

Fig 1 indicates that as depth increases, pressure...

• decreases only

• remains the same

• increases only

• increases, then decreases

According to Fig 2, the presence of which of the following minerals in a metamorphic rock would be least helpful in determining that rock's grade

• Chlorite

• Muscovite

• Staurolite

• Plagioclase

Hornfels, is a metamorphic rock formed when magma (molten rock)heats sedimentary rocks on Earth's surface. According to Fig 1 hornfels is most likely a member of which of the following fascies

• Facies A

• Facies C

• Facies E

• Facies G

According to Fig 2, Enzyme A has the fastest rate of reaction at a pH closest to:

• 5

• 6

• 8

• 9

Based on the data in Fig 2, at which of the following pHs, if any, do Enzymes A and B have the same acceleration factor?

• at pH of 5 only

• at pH of 6.7 only

• at all pHs between 2 and 11

• at none of the pHs shown in the figure

A scientist claims that the acceleration factor of Enzyme B is dependent on both enzyme and substrate concentration. Do the data in Fig 3 and 4 support her claim?

• No: the acceleration factor is dependent on enzyme concentration, but not on substrate concentration

• No: the acceleration factor is not dependent on either enzyme or substrate concentration

• Yes: the acceleration factor is dependent on enzyme concentration, but not on substrate concentration

• Yes: the acceleration factor is dependent on both the enzyme and the substrate concentration

A scientist claims that for the conditions used to obtain the data for Fig 4, the acceleration factor of Enzyme B at a given concentration will always be greater than that of Enzyme A at the same concentration. Do the data support his conclusion?

• No: Enzyme B shows a lower acceleration factor at all enzyme concentrations tested

• No: Enzyme B shows a lower acceleration factor at all the enzyme substrate concentrations tested

• Yes: Enzyme B shows a higher acceleration factor at all the enzyme concentrations tested

• Yes: Enzyme B shows a higher acceleration factor at all the substrate concentrations tested

The figure shows the relative acceleration factors for pepsin, an enzyme found in the stomach, and trypsin, an enzyme found in the small intestine. Based on this figure and Fig 2, one would best conclude that compared to the acidity of solutions in the stomach, the solutions in the small intestine are...

• more acidic

• less acidic

• equally acidic

• less acidic for pepsin, but more acidic for trypsin