Animal Structure and Function
Keywords: importance of size, scaling, collagen, ascorbate, hydroxyproline
Objectives of the second half of the course
In the second half will discuss the basic functional needs of organisms
This section introduces overall themes we will come back to:
1. Organisms have similar functional needs
bacterium
Sea anemone
PPT Slide
Example: Size Does Matter (scaling effects)
What is it like for a mayfly to hatch out of a stream?
E. coli swimming in water -- is like a human swimming in hot asphalt
How do insects cling to vertical surfaces?
Example: scaling of skeletons
What happens if you double the linear dimension of an animal?
To avoid weaker skeletons on large animals, the skeleton size increases disproportionately
The relationship between skeleton size and body mass for a variety of mammals
A mouse-sized elephant would have a skeleton around 5 times heavier than a mouse
3) To understand how the functional needs of organisms are met, we need to integrate information about:
Collagen
Structure of collagen
What happens when there is faulty collagen: Scurvy
Why did this happen?
Why does the improper amino acid sequence have deleterious effects?
The pompeii worm Alvinella pompejana
What about animals living at high temperatures?
Summary
Email: rlee@mail.wsu.edu
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