Endosymbiotic Theory Quiz

What is one of the leading theories about the origin of prokaryotic cells?

• They were created by eukaryotic cells.

• They appeared spontaneously without any precursors.

• They originated from lipid membranes followed by information encoding.

• They were formed from complex multicellular organisms.

What significant event gave a prokaryotic cell an evolutionary advantage?

• The cell engulfed a primitive mitochondrion.

• The cell became resistant to all viruses.

• The cell developed a new type of enzyme.

• The cell learned to photosynthesize independently.

How did the precursors of plants likely develop according to the endosymbiotic theory?

• By engulfing photosynthesizing prokaryotes.

• By merging with animal cells.

• By developing chlorophyll independently.

• By evolving from fungi.

What evidence supports the endosymbiotic theory regarding mitochondria and chloroplasts?

• They do not have any ribosomes.

• They are larger than eukaryotic cells.

• They contain their own residual DNA.

• They have a single membrane structure.

What characteristic of ribosomes in mitochondria and chloroplasts supports their prokaryotic origin?

• They are larger than eukaryotic ribosomes.

• They are 70S instead of 80S.

• They are identical to eukaryotic ribosomes.

• They do not participate in protein synthesis.