Unit 1.5: Respiration Flashcards
Name the form of energy stored in glucose.
Chemical energy
What is the name of the process used to release the chemical energy in glucose?
Respiration
Name the molecule the energy released from the breakdown of glucose is used to generate.
ATP
Name the protein which controls the series which releases energy from glucose.
enzymes
Describe the function of ATP.
To transfer energy to cellular activities that require energy.
State 5 cellular activities that require energy from ATP.
Active transport Cell division Muscle contraction Protein synthesis Nerve impulse transmission
Where does respiration happen in the first stage?
In the cytoplasm
How many molecules of pyruvate are made when 1 molecule is broken down?
2
State how many molecules of ATP is released when 1 molecule of glucose is broken down to pyruvate.
2
Under what conditions will aerobic respiration occur?
If oxygen is present
What is the word equation for aerobic respiration?
Glucose + Oxygen -> Water + Carbon Dioxide + lots of ATP
Where does stage 2 take place?
In the mitochondria
Describe the relationship between the energy required of a cell and the number of the mitochondria present.
As the number of mitochondria increases, the energy required of a cell also increases.
Name cells that require a lot of energy.
Muscle cells
Neuron cells
Sperm cells
Companion cells
Name the apparatus used to measure rate of respiration in small organisms and germinating peas.
Respirometer
What gas is taken up by respiring organisms during aerobic respiration?
Oxygen
Which gas is produced during aerobic respiration?
Carbon dioxide
How is the organism separated from the chemical?
Its placed on a platform
Why is the organism separated from the chemical?
It would burn the organism
Why does the coloured water rise in the tube?
The respiring organism absorbs the oxygen making it rise
How is the volume of oxygen measured?
By measuring how high the coloured liquid has risen
How is the rate of respiration calculated ?
Change of liquid then divide that by the number of mins
State 3 key variables that will affect the rate of respiration.
Temperature
Glucose concentration
Oxygen level
What gas is being taken up by the respiring organism?
Oxygen
What gas is produced by the respiring organism?
carbon dioxide
