Topic 7 - Energy Budgets Flashcards
What are energy demands?
Maintenance, growth, activity reproduction
Do organisms have similar energy demands?
Yes
What factors do energy budgets depend upon?
The size, activity, environment
What is scaling?
The study of the effect of size/mass on anatomy and physiology.
What does size/mass influence?
The way they move, how often, what they eat
What does size/mass have a big effect on?
The energy expenditure of organisms
What is surface area proportional to?
The length squared
What is volume proportional to?
The length cubed
What is an organism’s surface area?
Membrane/Skin
What is an organism’s mass?
Mass
What kinds of organisms have smaller SA/V ratios?
Larger organisms
Why do large organisms need to keep big internal surface area?
To exchange matter/energy with the environment
Does surface area scale with mass like it does in a geometric shape?
Yes!
Why is animal line higher (greater intercept)?
Appendages
Why do organisms need to obtain resources and excrete waste?
To support their mass (volume)
