Biology / Unit 12 Bio 2731 short lesson, about 20 seconds
Metabolic Rate: BMR and SMR
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The idea
Metabolic rate is the energy an animal expends over time, measured as basal rate at rest in endotherms and standard rate at rest in ectotherms.
In practice
A smaller endotherm has a higher BMR per body weight than a larger one, losing heat faster through its surface area.
Where people slip
BMR measures a resting baseline — active metabolism runs at a multiple of it.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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