Prokaryotes and eukaryotes are primarily distinguished by the absence or presence of internal,membrane-bound organelles.Are prokaryotic cells at an evolutionary disadvantage because they lack organelles?
A) Yes; without organelles, prokaryotic cells cannot photosynthesize or respire.
B) Yes; without organelles, prokaryotes are unable to bring together the reactants needed for biological reactions.
C) No; although prokaryotic cells are comparatively less efficient than eukaryotic cells, they are still able to carry out the processes necessary for survival and reproduction.
D) No; eukaryotic organelles are expelled each time the cell divides.

Question

Quizplus · Accepted Answer

Prokaryotic cells are not at an evolutionary disadvantage because they lack organelles. Although eukaryotic cells are more efficient at carrying out processes such as photosynthesis and respiration, prokaryotic cells are still able to survive and reproduce without these organelles. Prokaryotic cells have evolved to carry out these processes through different mechanisms, such as using the cell membrane to generate energy. Therefore, prokaryotic cells are not at a disadvantage simply because they lack organelles.

Prokaryotes and Eukaryotes Are Primarily Distinguished by the Absence or Presence