Respiration Flashcards
What is the primary purpose of respiration in living organisms?
To convert glucose and oxygen into energy in the form of ATP.
True or False: Anaerobic respiration occurs in the presence of oxygen.
False
What are the two main types of respiration?
Aerobic respiration and anaerobic respiration.
Fill in the blank: The chemical equation for aerobic respiration is ______ + ______ → ______ + ______ + ______.
glucose; oxygen; carbon dioxide; water; ATP
Which organelle is primarily responsible for aerobic respiration?
Mitochondria
What is the first stage of cellular respiration?
Glycolysis
Multiple choice: Which of the following is a product of anaerobic respiration in yeast?
Ethanol
What is produced during anaerobic respiration in muscle cells?
Lactic acid
True or False: ATP is the energy currency of the cell.
True
What is the role of NADH in cellular respiration?
It acts as an electron carrier.
Fill in the blank: The Krebs cycle occurs in the ______ of the mitochondria.
matrix
What is the final electron acceptor in the electron transport chain?
Oxygen
Multiple choice: Which process occurs in the cytoplasm?
Glycolysis
What is the net gain of ATP from glycolysis?
2 ATP
True or False: Lactic acid fermentation produces more ATP than aerobic respiration.
False
What is the function of oxygen in aerobic respiration?
To act as the final electron acceptor in the electron transport chain.
Fill in the blank: During the Krebs cycle, acetyl CoA combines with ______ to form citric acid.
oxaloacetate
Multiple choice: Which of the following is NOT a product of the Krebs cycle?
Glucose
What is the main purpose of the electron transport chain?
To produce ATP through oxidative phosphorylation.
True or False: Fermentation is a type of anaerobic respiration.
True
What are the two types of fermentation?
Lactic acid fermentation and alcoholic fermentation.
Fill in the blank: The energy yield from anaerobic respiration is ______ than that from aerobic respiration.
lower
What is the role of FADH2 in cellular respiration?
It serves as an electron carrier.
Multiple choice: Which molecule is a key intermediate in the Krebs cycle?
Citrate
True or False: The electron transport chain occurs in the cytoplasm.
False
What is the main advantage of aerobic respiration over anaerobic respiration?
It produces more ATP.
