Aerobic Respiration. Flashcards
Where does energy come from?
Chemical stores in the food you eat.
Describe the process of Aerobic Respiration:
• You get the oxygen needed for respiration from the air you breathe.
• You receive the glucose you need from the food you consume.
• The glucose is then broken down.
• Blood carries it to your cells, where respiration can occur in the powerhouse of the cell, the “mitochondria”.
• Special protein molecules called enzymes will enable a series of chemical reactions take place that react glucose and oxygen.
• The reaction transfers energy from its chemical energy store in glucose to another chemical energy store for all processes in the cell.
• This energy store is called ATP.
What does ATP stand for?
Adenosine Triphosphate. It is used by all organisms.
What are the waste products of Aerobic Respiration?
Water and Carbon Dioxide.
What are the three main reasons energy is used for?
• Synthesising larger molecules from smaller ones to make new cell material. Plants use sugars, nitrates, and other nutrients to make amino acids and use those to form proteins.
• For movement - animals use ATP to contract muscle cells enabling the organism to move.
• To stay warm - when an animal’s surroundings are colder than they are, they increase their rate of respiration. This transfers more energy by heating, so that they can keep their body at a constant temperature.
When does Aerobic Respiration occur?
Aerobic respiration occurs all the time in plant and animal cells. This provides the organism with a constant supply of energy.
Where does Aerobic Respiration occur?
Respiration takes place inside the mitochondria of a cell.
Each chemical reaction that happens is controlled by a specific enzyme.
Is Aerobic Respiration endothermic or exothermic? And why?
During the process of respiration energy is transferred to the surroundings by heating. This means that respiration is an exothermic reaction.
What is the symbol equation for Aerobic Respiration?
C6H12O6+ 6O2-> 6CO2+ 6H2O (+ ATP)
What is the word equation for Aerobic Respiration?
Glucose + Oxygen -> Water + Carbon Dioxide (+ energy).
