CAEC Life and Physical Sciences 2

Question 1

What is the function of mitochondria in a cell?

Accepted Answer

Producing energy (ATP) through cellular respiration

Answer

Protein synthesis

Answer

Controlling cell division

Answer

Storing genetic information

Question 2

What is Newton's Second Law of Motion?

Accepted Answer

Force equals mass times acceleration (F = ma)

Answer

An object at rest stays at rest unless acted upon by a force

Answer

For every action there is an equal and opposite reaction

Answer

Energy cannot be created or destroyed

Question 3

What is the process by which water vapour in the atmosphere cools and becomes liquid water?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Transpiration

Answer

Precipitation

Question 4

Which of the following is an example of a chemical change?

Accepted Answer

Wood burning in a fire

Answer

Ice melting into water

Answer

Sugar dissolving in coffee

Answer

Glass breaking

Question 5

What is the difference between an element and a compound?

Accepted Answer

An element contains only one type of atom; a compound contains two or more different elements chemically bonded together

Answer

Elements are gases; compounds are solids

Answer

Elements are natural; compounds are man-made

Answer

An element is a mixture; a compound is a pure substance

Question 6

Which type of rock is formed from cooled magma or lava?

Accepted Answer

Igneous

Answer

Sedimentary

Answer

Metamorphic

Answer

Limestone