B11 Respiration Flashcards
Cellular respiration?
An exothermic reaction that occurs continuously in the mitochondria of living cells to release energy from glucose
What do organisms need energy for ?
Chemical reactions to build larger molecules
Muscle contraction for movement
Keeping warm
Difference between aerobic and anaerobic respiration?
Aerobic respiration uses oxygen however anaerobic respiration does not require oxygen
Y does aerobic respiration release more energy per glucose molecule than anaerobic respiration?
Oxidation of glucose is complete in aerobic respiration and incomplete in anaerobic respiration
Anaerobic respiration in yeast cells?
Fermentation
Anaerobic respiration equation in plant 🍃 and yeast cells?
Glucose➡️ ethanol + carbon dioxide
How does the body supply the muscles with more oxygenated blood during exercise?
Heart rate
Breathing rate
Breath volume increase
What substance builds up in the muscles during anaerobic respiration?
Lactic acid
What happens to muscles during long periods of activity?
Muscles become fatigued and stop contracting efficiently
Oxygen debt?
The amount of oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from cells
How is lactic acid removed from the body?
Lactic acid in muscles ➡️ Blood transports to the liver ➡️ Lactic acid converted back to glucose
Metabolism?
The sum of all of the reactions In a cell or the body
