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WorksheetsCarbon biology
Total questions: 10
Worksheet time: 10mins
Endergonic reactions
Release more energy than they store
Store more energy than they release
Which of these is an endergonic reaction?
Combustion of methane
Aerobic respiration
Anaerobic respiration
Photosynthesis
The energy required for an exergonic reaction is called
Energy transfer
Activation energy
Chemical potential
Heat
The correct symbol equation for photosynthesis is
C6H12O6 + 6CO2 => 6O2 + 6H2O
C6H12O6 + 6H2O => 6CO2 + 6O2
6CO2 + 6H2O => C6H12O6 + 6O2
6O2 + 6H2O => C6H12O6 + 6CO2
Anaerobic means
No air
No oxygen
And air
And oxygen
Anaerobic respiration in plants and microbes forms
Lactic acid
Ethanoic acid
Ethanol
Carbon dioxide
Water
Under anaerobic conditions, animal cells
Cannot respire
Produce as much energy as under aerobic conditions
Produce less energy than under aerobic conditions
Produce more energy than under aerobic conditions
Most of the energy released by aerobic respiration is
Stored in the bonds of the product molecules
Used for essential life processes
Used to break bonds in the reactant molecules
Lost as heat
The absorption of light energy in photosynthesis is used to
Break water molecules into hydrogen and oxygen
Break the bonds in glucose
Add hydrogen to carbon dioxide
Heat the carbon dioxide molecules
The great oxygenation event began approximately
65 million years ago at the end of the Cretaceous Period
360 million years in the Carboniferous Period
2.3 billion years ago during the Paleoproterozoic Era
3.6 billion years ago in the Archean Era
