TExES Exam Science 7-12 2

Question 1

Which process describes the movement of water from soil into plant roots?

Accepted Answer

Osmosis

Answer

Transpiration

Answer

Diffusion

Answer

Active transport

Question 2

Which type of rock forms from the cooling and solidification of magma or lava?

Accepted Answer

Igneous rock

Answer

Sedimentary rock

Answer

Metamorphic rock

Answer

Fossiliferous rock

Question 3

Which variable is changed intentionally by the experimenter in a controlled experiment?

Accepted Answer

Independent variable

Answer

Dependent variable

Answer

Control variable

Answer

Confounding variable

Question 4

DNA replication ensures that each new cell receives:

Accepted Answer

A complete copy of the original DNA

Answer

Half the original DNA

Answer

Only the active genes

Answer

Randomly selected chromosomes

Question 5

The pH scale measures the concentration of which ion in a solution?

Accepted Answer

Hydrogen ions (H⁺)

Answer

Sodium ions (Na⁺)

Answer

Chloride ions (Cl⁻)

Answer

Hydroxide ions (OH⁻)

Question 6

Which ecological term describes the sequence of community changes following a disturbance such as a wildfire?

Accepted Answer

Secondary succession

Answer

Primary succession

Answer

Biotic homogenization

Answer

Trophic cascade