1. Homeostasis & Adaptations

2. Homeostasis
When a cell has balance levels – constant environment in order to survive and reproduce
Osmosis
Water balance
Isotonic solutions allow for a cell to be at homeostasis
Temperature
Normal human temperature = 98.6°F
How do we maintain that normal base temperature?

4. Homeostasis Eat food! Blood Glucose Level NEGATIVE FEEDBACK CONTROL
Low blood sugar
How would to get to a higher, optimal level?
Eat food!
More glucose being spread through the bloodstream
High blood sugar
How would to get to a lower, optimal level?
Release insulin that breaks down glucose
NEGATIVE FEEDBACK CONTROL

6. Unicellular Organisms
Prokaryotes
Lack organelles
Single-celled
Flagella- movement
Growth
Specific environments
Rapid reproduction

7. Adaptations Extremophiles Thermophiles
Bacteria and archaea that can survive in the extreme environments where other life forms cannot
Thermophiles
Bacteria that thrive in high heat environments (above 113ºF)
Thermophiles have more G/C pairs in their DNA than non- thermophiles do
Keeps their DNA, proteins and membranes from melting