respiration- topic 7 Flashcards
(18 cards)
what is respiration
What does respiration produce that cells use for energy?
ATP
What is the role of ATP
Where in the cell does respiration take place
in the mitochondria
What is the word equation for aerobic respiration?
Glucose + Oxygen → Carbon dioxide + Water (+ energy)
What is the balanced symbol equation for aerobic respiration?
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O (+ ATP)
What is the word equation for anaerobic respiration in animals?
Glucose → Lactic acid (+ energy)
What is the word equation for anaerobic respiration in plants and fungi (e.g. yeast)?
Glucose → Ethanol + Carbon dioxide (+ energy)
What are the differences between aerobic and anaerobic respiration?
Aerobic uses oxygen, produces more energy (ATP), and creates carbon dioxide and water. Anaerobic doesn’t use oxygen, produces less energy, and makes lactic acid or ethanol.
what is lactic acid
A waste product of anaerobic respiration in animals that can cause muscle fatigue.
what is oxygen debt
Extra oxygen needed after exercise to break down lactic acid and repay the oxygen “owed.”
what is fermentation
A type of anaerobic respiration in yeast that produces ethanol and carbon dioxide.
Why do heart and breathing rates stay high after exercise?
To deliver more oxygen to repay the oxygen debt and remove lactic acid.
How can we measure the rate of respiration in living organisms?
By measuring carbon dioxide released or heat generated.
What indicator can show carbon dioxide is produced during respiration?
Hydrogen carbonate indicator (turns yellow in the presence of CO₂).
How can heat from respiration be detected?
Using a thermometer or a temperature probe.
How is fermentation useful to humans?
It’s used to make bread rise and produce alcoholic drinks.
What are reactants and products in a chemical reaction?
Reactants go into the reaction (left side); products are made (right side).
