GED Science Test #7 3

Question 1

Which of the following is NOT a function of the human skeletal system?

Accepted Answer

Producing insulin

Answer

Providing structural support

Answer

Protecting internal organs

Answer

Storing calcium minerals

Question 2

An isotope differs from the standard atom of the same element by having:

Accepted Answer

A different number of neutrons

Answer

A different number of protons

Answer

A different number of electrons

Answer

A different atomic number

Question 3

Ocean water near the equator is warmer than ocean water near the poles. This difference drives:

Accepted Answer

Ocean currents that redistribute heat globally

Answer

An increase in precipitation at the poles

Answer

Reduced evaporation near the equator

Answer

Tidal patterns across all oceans

Question 4

A student measures a table and gets 152.4 cm. A second measurement gives 152.6 cm. These measurements are:

Accepted Answer

Precise but accuracy depends on the true value

Answer

Accurate but not precise

Answer

Both accurate and precise

Answer

Neither accurate nor precise

Question 5

In a nuclear fission reaction:

Accepted Answer

A heavy nucleus splits into smaller nuclei, releasing energy

Answer

Two light nuclei combine to form a heavier nucleus

Answer

Electrons are released from excited atoms

Answer

Protons are converted into neutrons

Question 6

Which process moves substances against a concentration gradient and requires energy?

Accepted Answer

Active transport

Answer

Osmosis

Answer

Diffusion

Answer

Filtration