Biology Unit 2 - Chapter 7.1-7.4 Worksheet

The purpose of cellular respiration in all living things is to:

• produce oxygen for cellular processes.

• convert glucose into energy.

• store energy in the form of fat.

• break down proteins for energy.

The reactants of cellular respiration are:

• Oxygen and glucose

• Carbon dioxide and water

• ATP and oxygen

• Glucose and ATP

The products of cellular respiration are:

• Oxygen and glucose

• Carbon dioxide and water

• Glucose and water

• Oxygen and carbon dioxide

What is the overall equation for cellular respiration?

• C6H12O6 + 6O2 → 6CO2 + 6H2O + energy

• 6CO2 + 6H2O + energy → C6H12O6 + 6O2

• C6H12O6 + 6O2 → 6CO2 + 6H2O

• 6CO2 + 6H2O → C6H12O6 + 6O2 + energy

How are cellular respiration and photosynthesis related to each other?

• Cellular respiration and photosynthesis are opposite processes.

• Both processes occur in the mitochondria.

• Both processes produce oxygen as a byproduct.

• Cellular respiration occurs only in plants.

The three stages of cellular respiration are:

• Glycolysis, Krebs cycle, Electron transport chain

• Photosynthesis, Glycolysis, Fermentation

• Calvin cycle, Krebs cycle, Electron transport chain

• Glycolysis, Fermentation, Photosynthesis

Checkpoint: Where in the cell does glycolysis take place?

• Cytoplasm

• Mitochondria

• Nucleus

• Ribosome

How many ATP molecules are required as an input into glycolysis?

• 1 ATP molecule

• 2 ATP molecules

• 3 ATP molecules

• 4 ATP molecules

How many ATP molecules are produced from glycolysis?

• 2 ATP molecules

• 4 ATP molecules

• 6 ATP molecules

• 8 ATP molecules

Checkpoint: Glycolysis results in the breakdown of one _______ molecule into two smaller _________ molecules.

• glucose; pyruvate

• glucose; ATP

• pyruvate; ethanol

• glucose; lactate