Cellular Respiration Flashcards
What is cellular respiration?
A metabolic process that converts food into energy in the form of ATP.
True or False: Cellular respiration occurs only in the presence of oxygen.
False
What are the two main types of cellular respiration?
Aerobic respiration and anaerobic respiration.
Fill in the blank: Aerobic respiration requires __________.
oxygen
What is the primary product of aerobic respiration?
ATP (adenosine triphosphate)
Which type of cellular respiration occurs in the absence of oxygen?
Anaerobic respiration.
What is produced during anaerobic respiration in yeast?
Ethanol and carbon dioxide.
What is the main difference between aerobic and anaerobic respiration?
Aerobic respiration uses oxygen, while anaerobic does not.
In which organelle does aerobic respiration primarily take place?
Mitochondria.
What is glycolysis?
The process of breaking down glucose into pyruvate, occurring in the cytoplasm.
True or False: Glycolysis occurs in both aerobic and anaerobic respiration.
True
What are the three main stages of aerobic respiration?
Glycolysis, Krebs cycle, and electron transport chain.
Which stage of cellular respiration produces the most ATP?
Electron transport chain.
Fill in the blank: The Krebs cycle occurs in the __________ of the mitochondria.
matrix
What is fermentation?
A type of anaerobic respiration that allows cells to produce energy without oxygen.
What are the two main types of fermentation?
Lactic acid fermentation and alcoholic fermentation.
True or False: Lactic acid fermentation occurs in muscle cells during intense exercise.
True
What is the end product of lactic acid fermentation?
Lactic acid.
Fill in the blank: The process that converts glucose to pyruvate is called __________.
glycolysis
What is the role of NADH in cellular respiration?
To carry electrons to the electron transport chain.
What is oxidative phosphorylation?
The process by which ATP is produced using energy from the electron transport chain.
Which molecule acts as the final electron acceptor in aerobic respiration?
Oxygen.
Fill in the blank: Anaerobic respiration produces less __________ compared to aerobic respiration.
ATP
What is the total number of ATP produced from one molecule of glucose during aerobic respiration?
Approximately 36-38 ATP.
What is substrate-level phosphorylation?
The direct transfer of a phosphate group to ADP to form ATP during glycolysis and the Krebs cycle.
True or False: ATP is the main energy currency of the cell.
True
What is the significance of the electron transport chain?
It generates a proton gradient used to produce ATP via chemiosmosis.
