Unit 2 Cells Review

Front

What is the function of mitochondria in a cell?

Back

Mitochondria are known as the powerhouse of the cell because they convert sugar and oxygen into energy through cellular respiration.

Front

What is cellular respiration?

Back

Cellular respiration is a chemical process in which cells break down sugar and oxygen to produce energy, water, and carbon dioxide.

Front

What is the role of the cell membrane?

Back

The cell membrane controls what enters and exits the cell, helping to maintain homeostasis.

Front

What is the difference between a physical process and a chemical reaction?

Back

A physical process does not change the chemical composition of a substance, while a chemical reaction results in the formation of new substances.

Front

What does it mean for matter to be conserved in a chemical reaction?

Back

Matter is conserved in a chemical reaction when the total number of atoms remains the same before and after the reaction.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What are products in a chemical equation?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, showing that matter is conserved.

Front

What is the significance of oxygen in cellular respiration?

Back

Oxygen is essential for cellular respiration as it helps to break down sugar to release energy.

Front

What are the byproducts of cellular respiration?

Back

The byproducts of cellular respiration are water and carbon dioxide.