BJU 10 Biology Chapter 2

Front

What is the main purpose of carbohydrates for living things?

Back

Fuel

Front

What is Brownian motion?

Back

Motion caused by the collision between particles.

Front

What type of change occurs when running a tree through a wood chipper?

Back

Physical change.

Front

What is a substance that produces hydroxide ions in a solution called?

Back

Base.

Front

What type of change occurs when a popsicle melts in the sun?

Back

Physical change.

Front

Define carbohydrates.

Back

Organic compounds made of carbon, hydrogen, and oxygen, primarily used for energy.

Front

What are the two main types of carbohydrates?

Back

Simple carbohydrates and complex carbohydrates.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance, while a chemical change alters its chemical composition.

Front

What is an acid?

Back

A substance that produces hydrogen ions in a solution.