Endosymbiosis

Question 1

What is the theory of endosymbiosis?

Answer 1

That eukaryotic cell organelles like nuclei, mitochondria and chloroplasts are derived from prokaryotic cells that became incorporated inside larger prokaryotic cells.

Question 2

Which cell is older?

Prokaryotic or euakryotic???

Answer 2

Prokaryotic cells are much older and more diverse.

They have been around for 3.5 billion years while eukaryotic cell have only been around for 1 billion years

Question 3

Name 4 obseravtions that support endosymbiosis?

Answer 3

Organelles contain circular DNA, like bacteria cells.
Organelles contain 70S ribosomes, like bacteria cells.
Organelles reproduce by binary fission, like bacteria.
Oragnelles are very like some bacteria that are alive today.