Pre-ACT Science Practice Test

Based on the information presented, if the transfer of the linear copy was interrupted 50 min after transfer began, how many complete genes would have been transferred to the recipient bacterium?

Based on the model presented by Student 3, if all 6 genes are replicated and the first gene replicated is Gene G, the third gene replicated would be:

Suppose that the transfer of genes between 2 bacteria was interrupted, that the last gene transferred was Gene A, and that no incomplete copies of a gene were transferred. Based on thisinformation, Student 1 would say that transfer was most likely interrupted how many minutes after the transfer began?

A sample of gray till was recovered from another core taken from a nearby area. The table below shows the results of an analysis of the sample.

Based on these data and the data provided in Figure 1 and Table 1, the sample of gray tillcorresponds most closely with which till from Figure 1?

According to Figure 1, the oldest glacial advance in this area deposited which of the following till layers?

According to Figure 1, which of the following statements best describes how the resistivity of the sand and gravel layer compares to the resistivity of the till layers? The resistivity measured in the sand and gravel layer is:

According to Tables 1 and 2, as the mass of successive sucrose samples increased, the change in the water temperature produced when the sample was burned most likely:

Based on the information in Tables 1 and 2, the heat released from the burning of 5.0 g of potato in a bomb calorimeter would be closest to which of the following?:

Figure 1 shows that a seismograph located at a point 125° around Earth from an earthquake’s focus would receive which type(s) of seismic waves, if either, from that earthquake?

Based on Figure 3, for a given seismograph, the time elapsed between the arrival of the first p- waves and the arrival of the first s-waves from an earthquake focus 10,500 km away would most likely be:

Based on the information provided, the “time earthquake starts at the focus” in Figure 2 corresponds to which of the following points on Figure 3?

According to Figure 2, which of the following statements best describes the relative amplitudes of the first p-waves to arrive at the seismograph and the first s-waves to arrive at the seismograph? The amplitude of the first p-waves to arrive at the seismograph is:

In Experiment 3, what is the most likely reason the students used the plastic bottle rather than an aluminum can? Compared to an aluminum can, the plastic bottle:

Based on the results of Experiments 1 and 2, in which of the following trials, before shaking, were the average speeds of the cans the same?

In Experiment 2, a result of shaking the can of flat tasting beverage was that the:

Suppose that in Experiment 2, two hours after the completion of Trial 5, the students had measured the roll time of the can of liquid without first shaking the can. Based on the results of Trials 4 and 5, the roll time would most likely have been:

If a block was pulled toward the east, the frictional force exerted on the block by the surface was directed toward the:

Based on Figure 2, what is the order of the 3 blocks, from the block that required the shortest time to reach 15 m/sec to the block that required the longest time to reach 15 m/sec?

Based on Figure 1, an applied force of 30.00 N would most likely have been required to maintain the constant speed of a block having mass of:

Based on Figure 1, the results of Experiment 1 are best modeled by which of the following equations?

According to Figure 2, the solar radiation intensity 8,000 years ago was closest to which of the following?

Which of the following statements best describes primary effect of CH 4 on Earth’s climate?

One solar radiation cycle is the time between a maximum in the solar radiation intensity and the next maximum in the solar radiation intensity. According to Figure 1, the average length of a solar radiation cycle during the past 250,000 years was:

According to Figure 1, the mass of cheese remaining at 4 hours was closest to which of the following values?

Suppose a company wants to use food as bait in a trap designed to capture female B.germanica. Based on Figure 1, which of the 4 foods should the company place in the trap to maximize the chance of capturing female B.germanica?

Consider the statement “The B.germanica ate the food between 0 hour and 4 hours, between 4 hours and 16 hours, between 16 hours and 24 hours, and between 24 hours and 28 hours.” This statement is consistent with the data in Figure 1 for how many of the 4 foods?

Based on Table 1, when 200 mg of each of the 4 foods was placed in the box, water accounted for more than 100 mg of the mass of which food(s)?

Based on Student 1’s explanation, the same substance composes both of the samples in which of the following pairs?

Suppose that the temperature of Sample D is increased to 890°C at 1 atm of pressure. Will the sample’s density be lower than or higher than it was at 20°C and 1 atm?

Consider the statement “Two samples that have the same mass, volume, density, and boiling point are composed of the same substance, even if the two samples have different melting points.” Which of Students 2 and 4, if either, would be likely to agree with this statement?