3.6 cellularrespiration foglia

Multiple Choice

Why is ATP important for cells?

• It provides energy for cellular processes

• It stores genetic information

• It acts as a structural component of the cell membrane

• It helps in cell signaling

Open Ended

How does cellular respiration contribute to the production of ATP in living organisms?

Multiple Choice

Which of the following organic molecules is NOT mentioned as a source of stored energy for heterotrophs?

• Carbohydrates

• Fats

• Proteins

• Nucleic acids

Multiple Select

Which of the following statements about harvesting energy from glucose are correct?

• Glucose catabolism produces ATP.

• Combustion and respiration both release energy.

• Respiration involves many small steps with enzymes.

• Combustion and respiration produce the same amount of ATP.

Open Ended

Explain why electrons cannot move alone in cells and how they are transferred during biological oxidation-reduction reactions.

Multiple Choice

Which of the following changes occurs during reduction in a biological system?

• Adding oxygen

• Removing hydrogen

• Gain of electrons

• Release of energy

Multiple Choice

What is the main function of NAD+ in cellular respiration?

• Acts as an enzyme

• Carries electrons as a reduced molecule

• Breaks down glucose directly

• Stores ATP

Open Ended

Explain why the production of ATP is considered the main point of cellular respiration.

Multiple Choice

During glycolysis, glucose is broken down into how many molecules of pyruvate?

• 1

• 2

• 3

• 4

Multiple Select

Which of the following statements about glycolysis and pyruvate oxidation are correct?

• Glycolysis occurs in the cytosol.

• Pyruvate oxidation requires oxygen.

• Glycolysis produces pyruvate from glucose.

• Pyruvate oxidation occurs before the Krebs cycle.

Open Ended

Describe the role of the Krebs cycle in cellular respiration and its relationship to ATP production.

Open Ended

What cells would have a lot of mitochondria?

Multiple Choice

What is the function of the cristae in the mitochondria?

• To store genetic information

• To increase the surface area for membrane-bound enzymes

• To protect the mitochondria from toxins

• To transport proteins out of the cell

Multiple Choice

What is the main advantage of the highly folded inner membrane of mitochondria?

• It protects the mitochondria from damage

• It allows more surface area for membrane-bound enzymes

• It stores more DNA

• It increases the size of the mitochondria

Multiple Choice

Which of the following statements about the endosymbiotic theory is supported by the way mitochondria divide?

• Mitochondria divide like viruses

• Mitochondria divide like bacteria

• Mitochondria divide like plant cells

• Mitochondria do not divide

Open Ended

Explain why the oxidation of pyruvate is an important step in cellular respiration.

Open Ended

Describe the fate of the carbon atoms from glucose as they pass through the Krebs cycle.

Multiple Select

Which of the following are electron carriers produced during the Krebs cycle?

• NADH

• FADH2

• CO2

• ATP

Multiple Choice

How many NADH molecules are produced from one glucose molecule during the Krebs cycle?

• 2

• 4

• 6

• 8

Open Ended

Explain why the Krebs cycle is considered an adaptation even though it only yields 2 ATP per glucose molecule.

Multiple Choice

What is the main purpose of the Krebs cycle in cellular respiration?

• To produce glucose

• To generate electron carriers for the electron transport chain

• To break down ATP

• To synthesize proteins

Open Ended

How does the process of cellular respiration help living organisms survive?

Multiple Choice

What is the main purpose of cellular respiration in cells?

• To produce ATP

• To create glucose

• To store oxygen

• To break down DNA