Biology Unit 2

Humans vs. Bacteria

Natural Selection and Evolution

6-7 weeks

Unit Overview

How has evolution shaped how humans and bacteria interact? How can we prevent future outbreaks of bacterial infections?

Bacteria are found everywhere: in extreme environments and living in, on, and around us. Some are harmful, some are beneficial, and some barely impact humans at all. Through the forces of natural selection, humans have entered an evolutionary arms race with virulent bacteria that may have lead to a global increase in bacterial infections. At the same time, bacteria have evolved to cooperate both with humans and each other in order to survive and flourish. In this unit, students will consider the factors that impact the rate and scale of evolution and will develop an argument outlining the best strategy to use in preventing a future outbreak. Will human society be able to develop new therapies and technologies in order to fight antibiotic-resistant bacteria and the re-emergence of infectious bacterial diseases?

Performance Expectations:

HS-LS4-2, HS-LS4-3, HS-LS4-4, HS-LS4-5, HS-LS2-8

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Unit Storyline

Unit Opening
The Black Death
Antibiotic Resistance
The Microbiome
Cooperation and Survival
Unit Closing

Essential Documents

A collection of printable materials required for activities, rubrics, and work samples for the unit.