TExES Exam Science 7-12 2

Question 1

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

Accepted Answer

Osmosis

Answer

Osmosis drives water from an area of higher water concentration (soil) into root cells where solute concentration is higher.

Question 2

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

Accepted Answer

Igneous rock

Answer

Igneous rocks form when magma cools below Earth's surface or lava solidifies on the surface, crystallizing into rock.

Question 3

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

Accepted Answer

Independent variable

Answer

The independent variable is deliberately manipulated by the experimenter to observe its effect on the dependent variable.

Question 4

DNA replication ensures that each new cell receives:

Accepted Answer

A complete copy of the original DNA

Answer

During DNA replication, each strand serves as a template, resulting in two identical copies of the entire genome for each daughter cell.

Question 5

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

Accepted Answer

Hydrogen ions (H⁺)

Answer

pH measures the concentration of hydrogen ions (H⁺) in a solution, with lower values indicating higher acidity.

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