BHS Standard 1: Cellular Chemistry

Front

What are enzymes?

Back

Enzymes are biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.

Front

What happens to enzymes at high temperatures?

Back

Enzymes can denature, meaning they change shape and lose their functionality when exposed to high temperatures.

Front

What is the role of the active site in an enzyme?

Back

The active site is the specific region on an enzyme where the substrate binds and the reaction occurs.

Front

What is a base in terms of pH?

Back

A base is a substance that contains more hydroxide ions (OH-) than hydrogen ions (H+) and has a pH greater than 7.

Front

What is an organ?

Back

An organ is a group of tissues that work together to perform a specific function in the body.

Front

What molecule is primarily used for long-term energy storage?

Back

Lipids are the molecules used for long-term energy storage in organisms.

Front

What is the difference between an acid and a base?

Back

An acid is a substance that contains more hydrogen ions (H+) than hydroxide ions (OH-), while a base contains more hydroxide ions than hydrogen ions.

Front

What is a substrate in the context of enzymes?

Back

A substrate is the reactant molecule that an enzyme acts upon during a chemical reaction.

Front

What is denaturation in enzymes?

Back

Denaturation is the process by which an enzyme loses its three-dimensional structure and, consequently, its activity due to external factors like temperature or pH.

Front

What is the function of carbohydrates in living organisms?

Back

Carbohydrates serve as a primary source of energy and are also important for structural functions in cells.