Cellular Respiration Quiz

What is the energy currency that cells need?

• ATP

• ADP

• NADH

• FADH2

Answer explanation

ATP is the energy currency that cells need. It is a molecule that stores and releases energy for cellular processes.

Which type of cells have membrane-bound organelles?

• Neither

• Prokaryotic cells

• Both

• Eukaryotic cells

Answer explanation

Eukaryotic cells have membrane-bound organelles, distinguishing them from prokaryotic cells which lack these structures.

Where does glycolysis take place?

• Endoplasmic reticulum

• Mitochondria

• Cytoplasm

• Nucleus

Answer explanation

Glycolysis takes place in the cytoplasm. It is the process of breaking down glucose to produce energy. The cytoplasm is the fluid-filled region of the cell where many metabolic reactions occur.

What is the net yield of glycolysis?

• 2 FADH2 and 2 NADH

• 2 ATP and 6 NADH

• 2 pyruvate and 2 ATP

• 2 acetyl CoA and 2 NADH

Answer explanation

The net yield of glycolysis is 2 pyruvate and 2 ATP. This is the correct choice as it represents the final products of glycolysis.

Which step of cellular respiration requires oxygen?

• Chemiosmosis

• Electron transport chain

• Krebs Cycle

• Glycolysis

Answer explanation

The step of cellular respiration that requires oxygen is the Electron transport chain. It is responsible for the final production of ATP in aerobic respiration.

What is the final product of the electron transport chain?

• Glucose

• Water

• Carbon dioxide

• ATP

Answer explanation

The final product of the electron transport chain is water. It is formed through the reduction of oxygen at the end of the chain, highlighting the correct choice.

How many ATP molecules are produced in the Krebs Cycle?

• 2

• 30-38

• 6

• 26-34

Answer explanation

The Krebs Cycle produces 2 ATP molecules.

What is the purpose of fermentation?

• To produce glucose

• To generate a proton gradient

• To break down glucose

• To make ATP without oxygen

Answer explanation

Fermentation is the process used to make ATP without oxygen.

What can block ATP production in the electron transport chain?

• Cyanide

• Water

• Glucose

• ADP

Answer explanation

Cyanide can block ATP production in the electron transport chain.

What is the main goal of cellular respiration?

• To make glucose

• To produce oxygen

• To create carbon dioxide

• To generate ATP

Answer explanation

The main goal of cellular respiration is to generate ATP, which is the correct choice.