B1.3 Respiration Flashcards
What is your metabolic rate?
Chemical reactions in your cells transfer energy from its chemical stores and food. At which this happens is your metabolic rate.
What enzyme breaks down starch
Amylase
Which acids form protiens?
Amino acids
Which enzyme breaks down protein and what does it turn it into?
Protease
Amino acid
What are lipids used for?
A good store of energy
Insulation
Buoyancy
Where does your energy come from?
Chemical stores in food
What is the formula for aerobic respiration?
Glucose +Oxygen ———> Carbon dioxide + water
What is ATP?
The reaction transfers energy from its chemical energy store and glucose to another chemical energy store for all processes in the cell.
It is an energy store
ATP produced during respiration is used……
To synthesise larger molecules from smaller ones to make new cell material
For movement : animals in the ATP to contract the muscle cells enabling the organism to move
To stay warm
Respiration is an exothermic or endothermic reaction? Explain why
Exothermic as Energy is transferred to the surroundings by heating
How do cramps and stitches occur?
When lactic acidosis builds up
this substance is formed when your body has to respire without oxygen
How do cramps and stitches occur?
When lactic acidosis builds up
this substance is formed when your body has to respire without oxygen
What does anaerobic respiration do?
Allows the body to transfer extra energy for a short period of time
What does anaerobic respiration do?
Allows the body to transfer extra energy for a short period of time
What is the word equation for anaerobic respiration?
Glucose ——> lactic acid
What are the two reasons our bodies normally respire aerobically?
Aerobic respiration produces more ATP molecules per glucose molecule then anaerobic respiration produces .it has a greater yield .this is because the glucose molecule is fully broken down
The lactic acid produces from anaerobic respiration can cause cramp .when lactic acid buildup in the muscle cells it causes pain in the muscle stop contracting. this is known as fatigue
What is oxygen debt?
When you have finished exercising you keep on breathing heavily. the extra oxygen you inhale reacts with the lactic acid breaking it down.
Where else does anaerobic respiration take place?
In plant cells and microorganisms
What is fermentation?
Anaerobic respiration in micro organisms on the plant cells ethanol and carbon dioxide instead of lactic acid
What is the word and balanced symbol equation for fermentation
Glucose ——>  ethanol + carbon dioxide
C6 H12 O6 ———> 2C2 H5 O H + 2CO2
