TCAP Science Concepts 2

Question 1

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

Accepted Answer

Mitochondria

Answer

Mitochondria are known as the powerhouse of the cell because they produce ATP through cellular respiration.

Question 2

A student observes that iron rusts when left outside in the rain. This is an example of what type of change?

Accepted Answer

Chemical change

Answer

Rusting is a chemical change because iron reacts with oxygen and water to form a new substance, iron oxide.

Question 3

Which type of rock forms when magma cools and solidifies?

Accepted Answer

Igneous

Answer

Igneous rocks form when magma (underground) or lava (above ground) cools and crystallizes.

Question 4

What happens to the particles in a liquid when it is heated to its boiling point?

Accepted Answer

They gain enough energy to escape into the gas phase

Answer

At the boiling point, liquid particles absorb enough energy to overcome intermolecular forces and transition to the gaseous state.

Question 5

In a food web, which organisms are always at the base (first trophic level)?

Accepted Answer

Producers (plants)

Answer

Producers, such as plants and algae, form the base of all food webs because they convert sunlight into chemical energy through photosynthesis.

(TCAP) Tennessee Comprehensive Assessment Program Practice Test