Evolution and Endosymbiosis

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Lab

Out of Class Writing assignment or discussion

Pre-reading/multimedia

Do Something Fun

Lab prep, read & prelab online

Interrupted Lecture

Interrupted Lecture

Case-studies, activities, or review

Review

preview

Review Review

Define endosymbiotic theory with respect to mitochondria and chloroplasts and explain how this is related to the evolution of eukaryotic cells and that this is an ongoing process.

Demonstrate the evidence that supports the theory that chloroplasts and mitochondria evolved from bacteria by connecting the common structures shared between domains.

Before class:◦ Bozeman video

◦ Reading

◦ Evolution 101

In class:◦ Door-buster question, review of

cell structures of eukaryotes and bacteria

◦ Work in small groups (2-3) to outline the evidence for the endosymbiotic theory

◦ Interrupted lecture with response system questions (Socrative) highlighting the selective advantages of symbiosis and asking thought questions. Students have time to look up/ think about answers

◦ Introduce modern examples and other theories and other ideas

Summative:◦ Exam questions:

◦ Aligned Multiple choice & Short Essay

◦ Create an argument to convince a friend of the endosymbiotic theory for mitochondria and chloroplasts.

Formative: Online Discussions Challenge Questions:

◦ Look up information in your text about the evolution of the nucleus, do you think that was an instance of endosymbiosis?

◦ What evidence suggests that the endosymbiotic theory, as presented in these materials, is not the whole story?

Next class, students diagram how metabolism, information flow, systems, and evolution are related to endosymbiosis

Objective: Genetics and evolution: Shared genetic processes and evolution by natural selection are universal features of all life.

• Cells/organelles and all major metabolic pathways evolved from early prokaryotic cells.

OUTCOMES ACTIVITIES ASSESSMENTS

Reflection• https://b.socrative.com/teacher/#edit-quiz/16702794

• This topic is connected to many other major concepts in this course and biology• Evolution, Information Flow, Structure and Function,

Metabolism, Systems• This method should let students address the topic in more depth• Using the response system will allow formative assessment, and the

ability to address more advanced questions.