TEAS Practice Test: Video 2 Answers (25 Questions)

Question 1

What term describes all the living and nonliving things interacting in a given area?

Accepted Answer

Ecosystem

Answer

An ecosystem includes all living organisms and nonliving factors in an area.

Question 2

Which term describes the movement of water across a semipermeable membrane from high to low water concentration?

Accepted Answer

Osmosis

Answer

Osmosis is the passive movement of water across a semipermeable membrane from a region of high water concentration (low solute) to low water concentration (high solute).

Question 3

What is the role of decomposers in an ecosystem?

Accepted Answer

Breaking down dead organic matter and recycling nutrients

Answer

Decomposers (fungi and bacteria) break down dead organisms and waste, releasing nutrients back into the environment for uptake by producers.

Question 4

Which of the following best describes an enzyme's role in a chemical reaction?

Accepted Answer

It lowers activation energy

Answer

Enzymes are catalysts that lower the activation energy needed for a reaction.

Question 5

What gas do humans exhale as a waste product of cellular respiration?

Accepted Answer

Carbon dioxide

Answer

Cellular respiration releases carbon dioxide as a metabolic waste product.