anactualmess
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The kangaroo rat is a small desert mammal. It takes in very little water in its food and it rarely drinks. Its core body temperature is 38 °C.
The kangaroo rat takes in some water by feeding and drinking. Describe another method by which the kangaroo rat could obtain water.

the answer is:
"metabolic water / from respiration;
allow condensation reactions. Ignore 'oxidation'.
aerobic / use of oxygen; ('From aerobic respiration' = 2 marks)"

can someone explain this please?
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Jpw1097
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(Original post by anactualmess)
The kangaroo rat is a small desert mammal. It takes in very little water in its food and it rarely drinks. Its core body temperature is 38 °C.
The kangaroo rat takes in some water by feeding and drinking. Describe another method by which the kangaroo rat could obtain water.

the answer is:
"metabolic water / from respiration;
allow condensation reactions. Ignore 'oxidation'.
aerobic / use of oxygen; ('From aerobic respiration' = 2 marks)"

can someone explain this please?
A significant amount of the water that we need comes from respiration. Think about the equation for respiration:

C6H12O6 + 6O2 ==> 6CO2 + 6H2O

As you can see, a byproduct of aerobic respiration is water. Aerobic respiration requires oxygen. You could also say that aerobic respiration is a condensation reaction, as by definition, any reaction which produces water is a condensation reaction.
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