Endosymbiotic Theory and Organism Interactions

What is the core concept illustrated by one organism absorbing another and taking on its abilities?

• Genetic mutation

• Symbiotic evolution

• Endosymbiosis

• Natural selection

Approximately two billion years ago, what type of organisms were the only living organisms on Earth?

• Eukaryotes

• Multicellular organisms

• Prokaryotes

• Fungi

What is the biological term for one organism living inside another, where both benefit from the arrangement?

• Parasitism

• Commensalism

• Mutualism

• Endosymbiosis

Which of the following provides evidence for the Endosymbiotic Theory regarding chloroplasts and mitochondria?

• They contain their own linear DNA and ribosomes similar to eukaryotic cells.

• They multiply in the same way as ancient bacteria and contain circular DNA.

• They are able to survive independently outside the cell.

• They are formed de novo within the cell when needed.

What does the membrane structure of chloroplasts and mitochondria suggest about their origin?

• They have a single membrane, indicating a simple structure.

• Their inner membrane is identical to the outer membrane of the host cell.

• They have two membranes, with the inner one resembling ancient bacterial membranes and the outer one derived from the host cell.

• Their membranes are constantly changing to adapt to the cell's needs.

What did the absorbing process of the endosymbiotic theory

• It allowed other organisms to stop evolving

• It allowed organism to become better adapted to life on earth

• It allowed organism to become prokaryotic organisms

• It provided food for other bacteria

The endosymbiotic theory allow was an evolutionary leap

• True

• False