What is DNA and Where Is it Found?

DNA:Is what type of macromolecule?Has what function?

DNA is found inside:

What is wrong with these 2 pictures?

Chloroplast containing DNA

The error in Picture 1 (animal cell) is: The error in Picture 2 (plant cell) is:

Let’s compare…

One day Mito heard a rumor about his past. A friend on the playground

mentioned something about his great great grandfather being in the

Prokaryote family. Mito wasn't sure what this meant, but he knew it might

be important, so he went to the library to do some research. He never

knew that genealogy could be so fascinating. But what he found out was

shocking! First he had to use his prefix-suffix sheet to understand some

new vocabulary…

The Story of “Little Mito”

Endocytosis

Break down this word using your prefix suffix sheet

Apparently, Mito had a questionable past. He almost felt

illegitimate! There was a big argument among scientists. Some

scientists claimed that Mito’s grandfather had undergone a

process called endosymbiosis.

Endosymbiosis

• Break down this word using your prefix suffix sheet

It contradicted everything that he had been taught in school about his origins! Mito

thought, "In the beginning, my great grandfather Mito wasn't part of a family; he did

EVERYTHING ALL ALONE. And Grandpa was once an aerobic bacterium and not a Mito

at all. Then one day he got eaten by a bacterial predator and, according to this book,

he was too strong for them. But he found it was pretty cool living inside the predator.

That's my Grandpa! Always looking for a good deal. As long as he did his share for the

predator and kept producing extra energy, he was living in the lap of luxury. He didn't

think of himself as a parasite or anything, it was more like a buddy system

In which part of this passage (look for the stars) could we substitute the term endocytosis? What about symbiosis?

Did all organelles come from endosymbiosis?

But that wasn't the end of it! The book said the predator host

did it again and maybe even again. That's how his sister Chlora

got here too. She had been a blue green alga who was

gobbled up

Mito’s sister Chlora most likely represents WHICH organelle?

A blue-green algae is most likely:a) Autotrophic b) Heterotrophic c) Omnivore

The Endosymbiotic Theory• What distinguishes between an idea and a scientific theory?

Lynn Margulis – Author of “The Origin of Eukaryotic Cells”

Summing it up- TedEd https://www.youtube.com/watch?v=9i7kAt97XYU

“How we think complex cells evolved - Adam Jacobson”

Be ready for a 3 Question QQ following the video

TedEd

QQ- Endosymbiosis 11/12

1. Give a definition of endosymbiosis2. Which two organelles are believed to have

originated from endosymbiosis?3. Give one piece of evidence for the endosymbiotic

theory