Biomolecules and Enzymes

Front

What is a biomolecule?

Back

A biomolecule is a large molecule that is essential for life, including proteins, nucleic acids, carbohydrates, and lipids.

Front

What are the four main types of biomolecules?

Back

The four main types of biomolecules are carbohydrates, lipids, proteins, and nucleic acids.

Front

What is the function of enzymes?

Back

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

Front

What is a substrate in the context of enzyme activity?

Back

A substrate is the reactant molecule upon which an enzyme acts.

Front

Define 'active site' in relation to enzymes.

Back

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

Front

What is the 'lock and key' model of enzyme action?

Back

The 'lock and key' model describes how each enzyme is specific to its substrate, fitting together like a key fits into a lock.

Front

What are nucleic acids?

Back

Nucleic acids are biomolecules made of nucleotides that store and transmit genetic information; examples include DNA and RNA.

Front

What role do carbohydrates play in living organisms?

Back

Carbohydrates provide energy and structural support in cells; they are made of sugar molecules.

Front

What are lipids and their functions?

Back

Lipids are hydrophobic biomolecules that store energy, form cell membranes, and serve as signaling molecules.

Front

What is the difference between a product and a substrate in a chemical reaction?

Back

A substrate is the starting material that undergoes a reaction, while a product is the substance formed as a result of the reaction.