B9 Flashcards
What type of reaction is aerobic respiration
Exothermic
Why is the energy transferred in aerobic respiration important
As it is needed for all living processes
Where does aerobic respiration happen
In mitochondria and is controlled by enzymes
What is the equation for aerobic respiration
glucose+oxygen->co2+water+energy
What can the energy transferred in aerobic respiration be used for
-Build larger molecules from smaller ones
-Enable muscle contractions
-Maintain a constant body temp in mammals and birds
-Move materials such as mineral ions into cells against a concentration gradient
How can you investigate aerobic respiration
Use limewater which will turn cloudy white if carbon dioxide is produced
What does your body need to do during excercise
Increase the rate at which oxygen and glucose reach the muscles and remove the extra waste carbon dioxide produced more quickly
How does the human body react to excercise
Heart rate increases and blood vessels dilate.
Breathing rate and depth of each breath increases
Muscles store glucose as glycogen which can be converted to glucose
What happens when your muscles cannot get enough oxygen for aerobic respiration
They start to respire anaerobically (without oxygen)
What happens to glucose in aerobic respiration
Glucose is not completely broken down so lactic acid is produced
What is one cause of muscle fatigue
Build up of lactic acid which creates an oxygen debt
What can remove lactic acid from muscles
Blood flowing through the muscles
What happens when excercise is finished
All lactic acid must be completely broken down to carbon dioxide and water. To do this you need to intake extra oxygen
What Else uses anaerobic respiration
Plant cells and yeast cells produce ethanol and carbon dioxide
What is fermentation
Anaerobic respiration in yeast cells
