UPCAT Final Integration

Chlorofluorocarbons (CFCs) are considered to be among the worst pollutants because

• they reduce the total insolation reaching the earth's surface

• CFCs break down ozone molecules and weaken the ozone shield

• CFCs are partly responsible for acid rain

• CFCs destroy the ionosphere and thus interfere with long-distance radio communication

Which stages of cellular division have exactly opposite characteristics?

• Prophase and telophase

• Prophase and anaphase

• Metaphase and telophase

• Metaphase and anaphase

A man finds that he can walk 1 km in 20 min, 3 km in 1 hr, 6 km in 2 hr, and 9 km in 3 hr. These indicate that the distance he travels is

• inversely proportional to the time

• inversely proportional to the square of the time

• directly proportional to the time

• directly proportional to the square of the time

If X is an element belonging to group IIIA of the Periodic Table, the formula of its oxide would be

• X2O

• X2O4

• X2O3

• XO2

The greenhouse effect results in warmer temperatures near the surface because

• clouds trap infrared radiation near the surface.

• some of the energy that would ordinarily escape is re-radiated toward the surface.

• carbon dioxide and water vapor trap infrared radiation.

• carbon dioxide molecules do not permit radiation to escape.

Plant cells will not break when placed in a container with plenty of water due to the presence of

• a membrane that regulates the flow of water

• the cell wall that supports the membrane when it is turgid

• the cytoplasm that can absorb much water

• organelles that expel excess water

Based on the graph shown above, the acceleration of the moving body is

• 10 m/s2

• 5 m/s2

• 4 m/s2

• 0 m/s2

Based on the table shown above, which substance will float in water?

• K

• L

• M

• N

A seismograph detects

• temperature gradients within the earth

• earthquake waves

• fluctuations in the earth’s magnetic field

• radioactivity

The continued synthesis of protein requires the continued synthesis of its corresponding

• tRNA

• nRNA

• mRNA

• rRNA