Endosymbiotic Theory

Virtual Day Lesson

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DE Biology

Endosymbiotic Theory

Open Ended

The beginning of the video clip said "what if."

The middle of the video clip said "this happened."

The end of the video clip said "we think this happened."

Did you notice the changes in wording? Why would they change it up like that?

Multiple Choice

What type of transport was shown in the animation of the blob cell taking in the photosynthetic bacterial cell?

• diffusion

• osmosis

• phagocytosis

• pinocytosis

Match

Match up the scientific terms in ENDOSYMBIOTIC with their meanings.

• endo

• sym

• bio

• (t)ic

inside

with / together

life

turns noun into adjective

• inside

• with / together

• life

• turns noun into adjective

Multiple Choice

What does the endosymbiotic theory say that the "cells living inside other cells" became?

• organs

• organelles

• DNA

• cell membranes

Multiple Select

What modern-day observations support the endosymbiotic theory?

• mitochondria have two membranes

• chloroplasts have their own circular chromosomes

• mitochondria have their own ribosomes

• chloroplasts have flagella

Open Ended

The endosymbiotic theory has supporters and critics. After watching this video, which one are you? Why?

Poll

How do the observations and hypotheses around endosymbiotic theory make you feel?

• excited

• thoughtful

• puzzled

• uneasy