Chapter Questions
How can you measure the metabolic rate of an animal?
Why is the average world record speed for a $10-\mathrm{m}$ race faster than that for a marathon?
Does a dog that is twice as heavy as a cat have twice the resting metabolic rate?
What happens in an endotherm and an ectotherm when outside temperature gets cold, and what happens when it gets hot?
Muscle, fat, and glycogen are all reservoirs of energy. In which order are they used during a prolonged fast?
In the context of nutrition, what does "essential" mean?
What are four ways in which animals capture prey? Provide an example of an animal that uses each one.
The jaws of vertebrates and the mandibles of insects have similar functions. Are they an example of analogous or homologous structures?
The rocks and sediments in the gizzards of birds break apart food mechanically. Which structures in vertebrates have a similar function?
What are the main sites of digestion of protein, carbohydrates, and fats, and which enzymes are involved in breaking down each of these?
What are the similarities and differences between foregut and hindgut fermentation?
Some animals, such as rabbits, whose digestive systems include hindgut fermentation, re-ingest the products of digestion. What function do you think this serves?