ACT Prep Science - Practice 3

34. One plant produced no fruit and had a height of 21 cm. Which of the following most likely describes this plant?

• F. It was from L2 and was grown in a 10 L nutrient solution containing 60 g of NaCl.

• G. It was from L2 and was grown in a 10 L nutrient solution containing 120 g of NaCl.

• H. It was from L4 and was grown in a 10 L nutrient solution containing 60 g of NaCl.

• J. It was from L4 and was grown in a 10 L nutrient solution containing 120 g of NaCl.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

35. During osmosis, water migrates through a semipermeable barrier. The osmosis referred to in the passage occurs through which of the following structures?

• A. Chromosomes

• B. Nuclear envelope

• C. Cell membrane

• D. Rough endoplasmic reticulum

36. For each line, as the concentration of salt in the nutrient solutions increased, average plant mass:

• F. increased only.

• G. decreased only.

• H. increased, then decreased.

• J. decreased, then increased.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

NGSS.MS-LS2-4

37. Which of the following as an independent variable in the experiment?

• A. Whether a line received AtNHx1

• B. Whether a tomato plant was used

• C. Plant mass without fruit

• D. Plant height

38. Which of the following best characterizes the genotype of L1 for AtNHX1 after L1 was genetically modified?

• F. It was heterozygous, since its 2 AtNHX1 alleles were different.

• G. It was heterozygous, since its 2 AtNHX1 alleles were identical.

• H. It was homozygous, since its 2 AtNHX1 alleles were different.

• J. It was homoozygous, since its 2 AtNHX1 alleles were identical.

Tags

NGSS.HS-LS3-2

39. Suppose the data for all the plants were plotted on a graph with height on the x-axis and mass (without fruit) on the y-axis. Suppose also that the best-fit line for these data was determined. Which of the following would most likely characterize the slope of this line?

• A. The line would not have a slope, because the line would be vertical.

• B. The slope of the line would be zero.

• C. The slope of the line would be negative.

• D. The slope of the line would be positive.

Tags

NGSS.HS-LS3-3

40. The researchers included 1 of the 4 lines to serve as a control. This line was most likely which one?

• F. L1

• G. L2

• H. L3

• J. L4

41. if the Plume model in Study 1 is typical of all mantle plumes, the scientists would generalize that the heads of plumes are:

• A. approximately half the diameter of the tail.

• B. approximately twice the diameter of the tail.

• C. the same diameter as the tail.

• D. half as dense as the tail.

Tags

NGSS.HS-ESS2-3

42. The scientists in Study 3 hypothesized that the larger the volume of lava produced, the larger the number of marine organisms that would become extinct. If this hypothesis is correct, the formation of which of the following plateaus caused the largest number of marine organisms to become extinct?

• F. Plateau A

• G. Plateau B

• H. Plateau C

• J. Plateau D

Tags

NGSS.HS-ESS2-2

NGSS.HS-LS4-5

NGSS.HS-ESS2-7

43. Based on the results of Study 2, a flood basalt plateau that produced lava for a period of 1.8 Myr would most likely have a lava volume

• A. between 1,440,000 km³ and 1,500,000 km³

• B. between 1,500,000 km³ and 2,000,000 km³

• C. between 2,000,000 km³ and 2,125,000 km³

• D. over 2,125,000 km³

Tags

NGSS.HS-ESS2-1