Constraints
Upcoming SlideShare
Loading in...5
×
 

Like this? Share it with your network

Share

Constraints

on

  • 367 views

 

Statistics

Views

Total Views
367
Views on SlideShare
259
Embed Views
108

Actions

Likes
0
Downloads
0
Comments
0

1 Embed 108

http://juliestewart.wikispaces.com 108

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Constraints Presentation Transcript

  • 1. Notes: Constraints (pg 14)
  • 2. Notes: Constraints (pg 14) • Why aren’t airplanes made entirely of “black box” material?
  • 3. Cost constraints • In Biology, “cost” means energy cost • Example: cardiac muscle can contract forever without getting tired. Why aren’t all our muscles made of cardiac muscle?
  • 4. Cost constraints • In Biology, cost means energy cost • Example: cardiac muscle can contract forever without getting tired. Why aren’t all our muscles made of cardiac muscle? Regular muscle doesn’t NEED to contract all the time, the heart does Cardiac muscle contains lots of mitochondria and uses a huge amount of glucose.
  • 5. Evolutionary constraints • Evolution works by modifying existing forms, not designing new organisms (like remodeling a house instead of building a new one)
  • 6. Evolutionary constraints • Evolution works by modifying existing forms, not designing new organisms (like remodeling a house instead of building a new one) • Example: Ancestors: 4 legs Humans: 2 legs. Spine and pelvis were modified. As a result, humans have back problems and difficult childbirth