Respiration Flashcards
glucose+ oxygen—>
Carbon dioxide+ water
What reaction is respiration?
exothermic reaction
Where does aerobic respiration take place?
mitochondria
What is aerobic respiration?
exothermic reaction by which glucose reacts with oxygen to release energy
What is anaerobic respiration?
exothermic reaction where glucose is broken down
Anaerobic respiration?
glucose –> lactic acid (+energy)
Why is anaerobic less efficient than aerobic respiration?
glucose is not completely broken down so less energy is released
Why can anaerobic respiration lead to muscle fatigue?
lactic acid build up in the muscles, preventing efficient contraction
What is oxygen debt?
amount of oxygen needed to convent lactic acid back into glucose after anaerobic respiration
What is fermentation?
anaerobic respiration that occurs in yeast cells
Equation of fermentation?
Glucose –> ethanol + carbon dioxide (+energy)
Why is fermentation important?
used to make bread and alcoholic drinks
Differences between aerobic respiration and anaerobic respiration?
aerobic requires oxygen
aerobic produces co2 and water, anaerobic produces ethanol and co2
aerobic transfers a greater energy
How do muscles store glucose?
glycogen
What changes take place when muscular activity increases?
- heart rate increases, increases flow of oxygenated blood to the muscles
- breathing rate increases, increases rate of gaseous exchange
- glycogen is converted back into glucose
