1. Which type of selection can humans influence the most?
Date:
4/3/17
Topic:
Bacterial Evolution
Page # ___
Must wear uniforms/IDs!
4/3/17
EBHS
Admit Slip
Which type of selection can humans influence the most?
Natural Selection
Sexual Selection
Artificial Selection

2. Human Impact Which type of selection can humans influence the most?
Natural Selection
Sexual Selection
Artificial Selection

4. Can humans influence natural selection?
¿Es posible que los seres humanos puedan influir en el proceso de selección natural? ¿Si es así, cómo?
Can humans influence natural selection?
Natural selection = When the environment influences which traits helps animals survive
Human influence = When humans impact the world around us
Timed Think-Pair-Share
1 min – 2 min – 2 min

5. How can humans influence the environment for bacteria?
¿Cómo pueden los humanos influir en el medio ambiente para las bacterias?

6. Evolution of Bacteria Today’s questions:
1) What is it? How does it happen?
2) How have human choices influenced the evolution of bacteria?

7. Case Study: Ellie, Jane, & Mary
What happened???
Case Study: Ellie, Jane, & Mary
1940s
1950s
1960s

8. Evolution of Bacteria…
Volunteer to explain, using homework
Bacteria evolve too…

9. Evolution of Bacteria Antibiotics kill bacteria
When you have a bacterial infection, you take an antibiotic
Sometimes, there is a bacterium with a mutation
So it doesn’t die = resistant
That resistant bacterium reproduces and produces more resistant bacteria  evolution (population changed)

10. Superbugs
*Superbugs = Bacteria that are resistant to many types of antibiotics; making them almost impossible to treat
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11. Bacterial Replication: Video
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Bacteria divide in half to replicate. This happens so frequently (every 20 minutes) that there are so many chances to make mistakes (mutations) that could code for resistance.
Cellular level: 0gkQ4

12. Should you Buy Antibacterial Products?

13. Bacteria vs. Virus
What is the difference??

14. Bacteria vs. Virus* Bacteria are ALIVE Viruses are NON-LIVING
Require energy and reproduce on their own
Viruses are NON-LIVING
Do not require energy and must reproduce inside a host

15. Structure of Bacteria
Use your phone to find a labeled picture of a bacteria cell, and draw/label it in your journal on a full page.

16. Structure of Virus
Use your phone to find a labeled picture of a virus, and draw/label it in your journal on a full page.