GED Science Test #4 2

Question 1

Which organelle is responsible for producing energy (ATP) in a cell?

Accepted Answer

Mitochondria

Answer

Ribosome

Answer

Nucleus

Answer

Vacuole

Question 2

A scientist observes that plants placed near a window grow toward the light. This response is called:

Accepted Answer

Phototropism

Answer

Photosynthesis

Answer

Photoperiodism

Answer

Phototaxis

Question 3

The tectonic plates of Earth are constantly moving. This movement is driven primarily by:

Accepted Answer

Convection currents in the mantle

Answer

The gravitational pull of the Moon

Answer

Solar radiation heating Earth's surface

Answer

Volcanic eruptions at the surface

Question 4

In an experiment, which variable does the scientist deliberately change?

Accepted Answer

Independent variable

Answer

Dependent variable

Answer

Control variable

Answer

Confounding variable

Question 5

Water (H₂O) changes from liquid to gas during evaporation. What type of change is this?

Accepted Answer

Physical change

Answer

Chemical change

Answer

Nuclear change

Answer

Biological change

Question 6

Which of the following best describes natural selection?

Accepted Answer

Organisms with traits better suited to their environment survive and reproduce more

Answer

Organisms consciously develop traits they need over their lifetime

Answer

All organisms in a species evolve at the same rate

Answer

Mutations always improve an organism's chances of survival