7A Respiration

Why do living things do respiration?

• To create sugars that cells need for energy.

• To cause cells to combust rapidly.

• To burn the ATP in cells and use it for energy.

• To gradually release the energy in food to make ATP.

• None of these.

What gets oxidised and broken down during glycolysis?

• Pyruvate

• NADH

• ATP

• Glucose

• All of these.

What are the products of glycolysis?

• 2 NAD+, 1 glucose, and 2 carbon dioxides

• Water and carbon dioxide

• Glucose and oxygen

• 2 pyruvate, 2 NADH and 2 ATP

• All of these.

Which of the following is a true statement about glycolysis?

• A 6-carbon glucose splits to make 2 pyruvate with 3 carbons each.

• All of these.

• Electrons and hydrogens get removed from glucose when it gets oxidised.

• Electrons and hydrogens get transferred to NAD+, making NADH.

• ATP gets made when a phosphate is transferred to ADP.

What is the purpose of the NADH made during glycolysis?

• It breaks down ATP.

• All of these.

• It transports pyruvate around the cell.

• It makes sugar more likely to explode.

• It carries electrons and hydrogens to the electron transport chain.

Where in the cell does glycolysis happen?

• In chloroplasts

• In mitochondria

• In the cytoplasm

• At ribosomes

• In the Golgi

What are the products of the Link Reaction?

• ADP and phosphate

• Carbon dioxide and water

• Water and oxygen

• ATP and carbon dioxide

• Acetyl-CoA, carbon dioxide and NADH

What will happen to the carbon dioxide produced by the Link Reaction in an animal?

• It will disappear.

• It will be used to build muscle.

• It will become glucose.

• It will be breathed out.

• It will become oxygen in the body.

Again, we see NADH is produced. Why is this NADH important?

• It carries electrons to the Krebs cycle.

• It carries electrons to glycolysis.

• It carries electrons to the electron transport chain.

• It gets converted into ATP.

• None of these.

Why is the acetyl-CoA produced in the Link Reaction important?

• It will become oxygen in the body.

• It will disappear.

• It will be used to build muscle.

• It is used in the next stage, the Krebs cycle.