B4 Aerobic and Anaerobic Respiration (page 55) Flashcards
There are two types of Respiration, what are they?
Aerobic and Anaerobic Respiration
What is Aerobic Respiration?
it is respiration using Oxygen. It’s the most efficient way to transfer energy from glucose.
Where does Aerobic Respiration go on all the time?
it goes on all the time in plants and animals
Where does most of the reactions in aerobic respiration happen?
inside mitochondria (see page 11).
What is the word equation for aerobic respiration?
glucose + oxygen »_space;» carbon dioxide + water
What is the symbol equations for aerobic respiration?
C6H12O6 + 6O2 »_space;» 6CO2 + 6H20
What is Anaerobic Respiration?
its means without oxygen.
Anaerobic Respiration is used if what?
if there’s not enough oxygen
What happes when you do vigorous exercise and your body can’t supply enough oxygen to your muscles?
they start doing anaerobic respiration as well as aerobic respiration
Anaerobic just means without oxygen, explain this further?
it’s the incomplete breakdown of glucose, making lactic acid.
What is the word equation for anaerobic respiration in muscle cells?
glucose»_space;»»»»> lactic acid
Anaerobic respiration does not transfer nearly as much energy as aerobic respiration, explain what this is?
This is because glucose isn’t fully oxidised (because it doesn’t combine with oxygen).
Anaerobic respiration is only useful in emergencies, give example?
during exercise when it allows you to keep on using your muscles for a while longer
Can Plants and Yeast Cells respire without oxygen and why?
yes, but they produce ethanol (alcohol) and carbon dioxide instead of lactic acid
What is the word equation for anaerobic respiration in plants and yeast cells?
glucose»_space;»»> ethanol + carbon dioxide
What is Yeast?
they are single-celled organisms
What is the Anaerobic Respiration in yeast cells called?
Fermentation
Why is Fermentation by yeast of great value in the food and drinks industry?
because it’s used to make bread and alcoholic drinks, e.g. beer and wine.
What makes the bread rise in bread-making?
its the carbon dioxide from fermentation that makes bread rise
In beer and wine-making, what is the process that produces alcohol?
its the fermentation process that produces alcohol.
Fermentation is a really important process why?
because of its use in making alcoholic drinks and bread. We drink and eat so much of these that making them is big bucks. And its all down to tiny yeast cells.
What are the reactants of aerobic respiration? (2 marks)
Glucose (1 mark) and Oxygen (1 mark)
What is the process of anaerobic respiration in yeast called? (1 mark)
Fermentation (1 mark)
