Science Test 2
You will be given two science passages, one with 7 questions and one with 6 questions, for a total of 13 questions.
Data Representation (1 of 7)


Use this passage to answer the next 7 questions:

The bacterial strain SN2 (Alteromonas naphthalenivorans) is known to contaminate both tidal flats and seawater. The graphs in Figure 1 show the results of an experiment intended to measure the cell growth of SN2 in a tidal flat environment with added Naphthalene (TF-N) and a tidal flat environment with added Pyruvate (TF-P). The concentration of Naphthalene and Pyruvate were also measured within this experiment. Additionally, changes in the optical density of seawater was measured when both Naphthalene and Pyruvate were added. The goal of this experiment was to better understand the Eco physiological behavior of SN2 in contaminated environments. The graphs in Figure 2 depict levels of correlation in level of gene expression between conditions. 

data representation 2

Figure 1

data representation 3

Figure 2

Figures adapted from Genome-wide transcriptional responses of Alteromonas naphthalenivorans SN2 to contaminated seawater and marine tidal flat sediment by Hyun mi Jin et al.

1. In Figure 1, what is the relationship between Pyruvate concentration and Naphthalene concentration?

1/13

Disclaimer: Not affiliated with or endorsed by ACT, Inc. ACT is a registered trademark of ACT, Inc. and is used here solely for purposes of identification.These practice questions were written by Test-Guide.com to help you prepare for the exam - they are not official ACT questions.

ACT Test Information

The ACT Test is a standardized exam that is used by U.S. colleges in their admissions process. The ACT Test serves a similar function to the SAT in that both are used by colleges and universities as a factor in admissions.

Different institutions place varying degrees of importance on standardized tests and use them along with other factors such as GPA, class rank, community service, recommendations and extracurricular activities.

The ACT Test is meant to measure a high school student’s readiness for college. The ACT Test consists of multiple choice questions in the areas of: English, mathematics, reading, and science. There is also an ACT Plus Writing Test which is a thirty minute essay test that evaluates your writing skills. The ACT Writing Test is required by some colleges and optional for others.

To prepare for the ACT, try our free ACT-style practice tests. For more serious preparation, see our review of best ACT prep courses.

Sources:

Some questions are from the following sources:

Erik Jacobsen at www.erikthered.com/tutor

From the New York State Education Department. "High School Regents Examinations". Internet. Available from www.nysedregents.org

CK-12 Foundation - www.ck12.org

Test-Guide

About Test-Guide

Test-Guide.com was founded by a group of educators with a passion for preparing students to succeed on their exams. [About Us]

Follow us