Cellular Respiration PPT

Multiple Choice

What is the significance of cellular respiration in living organisms?

• It helps organisms move faster

• It is essential for energy production

• It allows organisms to breathe underwater

• It is only important for plants

Multiple Choice

Which of the following best describes metabolism?

• The process of breathing

• The combination of chemical reactions an organism undergoes to build up or break down materials

• The movement of muscles

• The absorption of water by plants

Multiple Choice

Explain how ATP is produced and why it is important for cells.

• ATP is produced only during photosynthesis and is not essential for cellular functions.
• ATP is a waste product of cellular respiration and has no role in energy transfer.
• ATP is crucial for cells as it serves as the primary energy currency, powering various cellular processes such as muscle contraction, nerve impulse propagation, and biosynthesis.
• ATP is synthesized exclusively in the mitochondria and is not used by other organelles.

Multiple Select

Which of the following statements about aerobic and anaerobic processes is/are correct?

• Aerobic processes require oxygen and occur in multicellular organisms

• Anaerobic processes require oxygen to occur

• Anaerobic processes occur in many single-celled prokaryotes

• Aerobic processes do not require oxygen

Multiple Choice

Cellular respiration is a series of processes that release energy from food in the presence of ___

• glucose
• carbon dioxide
• oxygen
• nitrogen

Multiple Choice

Describe the chemical equation for cellular respiration and explain the role of glucose and oxygen in this process.

• C6H12O6 + 3O2 → 3CO2 + 3H2O + energy (NADH)
• C6H12O6 + 6O2 → 6CO + 6H2 + energy (FADH2)
• C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (ATP)
• C6H12O6 + 2O2 → 2CO2 + 2H2O + energy (heat)

Multiple Choice

Which organelle is responsible for converting chemical energy in food into ATP that cells use to power cell activities?

• Nucleus

• Mitochondria

• Ribosome

• Chloroplast

Multiple Choice

Which step of cellular respiration produces the most ATP?

• Glycolysis

• Krebs cycle

• Electron transport chain

• Fermentation

Multiple Choice

Explain the role of oxygen in aerobic cellular respiration.

• Oxygen is used to break down glucose into carbon dioxide only.
• Oxygen is a byproduct of anaerobic respiration, not aerobic.
• Oxygen is essential for aerobic cellular respiration as it serves as the final electron acceptor, facilitating ATP production.
• Oxygen acts as a catalyst in the fermentation process.

Multiple Select

Which of the following statements about glycolysis are correct?

• It occurs in the cytoplasm.

• It is an anaerobic process.

• It produces pyruvic acid.

• It requires oxygen.

Fill in the Blank

During glycolysis, one molecule of glucose is broken down into ___ molecules of pyruvic acid.

Multiple Choice

Where does the Krebs cycle take place within the cell?

• Cytoplasm

• Matrix of the mitochondria

• Nucleus

• Cell membrane

Multiple Choice

Describe the main steps and products of the Krebs cycle.

• The main products of the Krebs cycle are NADH, FADH2, GTP (or ATP), and CO2.
• The main products of the Krebs cycle are acetyl-CoA, succinate, and glucose.
• The main products of the Krebs cycle include lactate, ethanol, and ammonia.
• The main products of the Krebs cycle are glucose, pyruvate, and oxygen.

Multiple Choice

Which molecules are produced at the conclusion of the Krebs cycle?

• NADH, FADH2, ATP

• CO2, NAD+, FAD

• Glucose, Pyruvate, ATP

• Oxygen, Water, ATP

Multiple Choice

Explain the role of the electron transport chain in aerobic cell respiration.

• The electron transport chain produces glucose and releases carbon dioxide.
• The electron transport chain synthesizes proteins and stores fat.
• The electron transport chain generates ATP through oxidative phosphorylation and transfers electrons to oxygen, forming water.
• The electron transport chain converts light energy into chemical energy.

Multiple Select

Which of the following are steps involved in oxidative phosphorylation?

• Proton pumps create an electrochemical gradient

• ATP synthase uses diffusion of protons to synthesize ATP

• Oxygen accepts electrons and protons to form water

• Glucose is converted to pyruvate

Multiple Choice

ATP synthase attaches a phosphate group to ___ to generate ATP.

• AMP
• GTP
• ADP
• ATP

Multiple Choice

How many molecules of ATP are released per molecule of glucose during cellular respiration, and what percentage of the total energy in glucose does this represent?

• 30-32 ATP molecules, representing approximately 30-32% of the total energy in glucose.
• 24-26 ATP molecules, representing about 24-26% of the total energy in glucose.
• 18-20 ATP molecules, accounting for roughly 18-20% of the total energy in glucose.
• 36-38 ATP molecules, which corresponds to nearly 36-38% of the total energy in glucose.

Multiple Choice

Which stages of cellular respiration occur in the mitochondrion?

• Glycolysis and Krebs cycle

• Krebs cycle and Electron Transport

• Glycolysis and Electron Transport

• All stages

Multiple Choice

Which statement best describes the relationship between cellular respiration and photosynthesis?

• They are completely unrelated processes.

• The products of one process are the reactants of the other.

• Both processes produce glucose.

• Both processes require carbon dioxide.

Multiple Choice

Explain how the cycling of matter and energy occurs between photosynthesis and cellular respiration.

• Photosynthesis and cellular respiration are interconnected processes that cycle matter and energy; photosynthesis produces glucose and oxygen, which are used in cellular respiration to generate energy, releasing carbon dioxide and water that are then used in photosynthesis.
• Photosynthesis consumes carbon dioxide and releases glucose, while respiration uses glucose to produce oxygen.
• Cellular respiration occurs only in plants, while photosynthesis happens in animals to create energy.
• Photosynthesis and respiration are unrelated processes that do not exchange matter or energy.

Fill in the Blank

Fermentation produces ___ ATP per glucose molecule.

Multiple Select

Which of the following are true about fermentation?

• It is an anaerobic process.

• It produces more ATP than aerobic respiration.

• It takes place in the cytoplasm.

• It occurs only in animals.

Multiple Choice

Which food is most likely produced by lactic acid fermentation?

• Cheese

• Bread

• Alcohol

• Wine

Multiple Choice

Compare alcoholic fermentation and lactic acid fermentation in terms of their products and where they occur.

• Alcoholic fermentation produces lactic acid; occurs in muscle cells.
• Alcoholic fermentation produces glucose; occurs in bacteria.
• Lactic acid fermentation produces ethanol and CO2; occurs in yeast.
• Alcoholic fermentation produces ethanol and CO2; occurs in yeast. Lactic acid fermentation produces lactic acid; occurs in muscle cells.

Multiple Choice

Cellular respiration is the process by which organisms convert ____ into energy.

• carbon dioxide
• glucose
• oxygen
• water

Open Ended

Reflecting on today's lesson about cellular respiration, what is one question you still have or something you would like to learn more about?