aerobic and anaerobic respiration

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Cards (12)

what is respiration
respiration is a chemical process that releases the energy from sugar molecules such as glucose
is respiration an exothermic or endothermic reaction
respiration is an exothermic reaction because it involves the release of energy
give 5 examples of how cells use the energy from respiration
to combine small molecules to make larger molecules
to break larger molecules intro smaller molecules
for muscle contraction
to maintain body temperature
to move substances around the cell
what is metabolism
the combination of all chemical reactions in an organism
what is the word equation for aerobic respiration
glucose + oxygen $\rightarrow$ carbon dioxide + water
what id the symbol equation for aerobic respiration
C6H12O6 + 6O2 ➔ 6CO2 + 6H2O
what is the word equation for anaerobic respiration in animals
glucose $\rightarrow$ lactic acid
what is the word equation for anaerobic respiration in plants and fungi
glucose $\rightarrow$ ethanol + carbon dioxide
which type of respiration releases most energy, why
aerobic respiration releases the most energy
anaerobic respiration doesn’t break down the glucose molecule completely, so it doesn’t release as much energy
why don’t animals always carry out aerobic respiration
it requires oxygen, and during intense exercise there may not be enough oxygen
what can the ethanol produces by anaerobic respiration be used for
making alcoholic drinks
how is anaerobic respiration used in baking bread
when baking bread we add yeast (unicellular fungi) to the mixture
as there is limited oxygen in the bread mixture, they will respire anaerobically
this produces carbon dioxide which forms little bubbles of gas
these pockets of gas make the bread light and fluffy