I think the answer is b. what do you think? Almost all eukaryotic cells can be s
ID: 3660 • Letter: I
Question
I think the answer is b. what do you think?Almost all eukaryotic cells can be said to "have a little bit ofprokaryote in them". this statement most likely refers to thefinding that: a. the eukaryotic cell nucleus is likely dervived from aprokaryotic ancestor, whose membranes still remain as the nuclearenvelope. b. eukaryotic cells clearly evolved from simpler prokaryoticcells c. eukaryotic cells likely evolved from viruses thesimplest prokaryotic forms d. eukaryotic cells require symbiotic bacteria foressential nutrient molecules e. almost all eukaryotic cells contain mitochondria (andsometimes chloroplasts), which are thought to have originated in evolution as prokaryoticcells. I think the answer is b. what do you think?
a. the eukaryotic cell nucleus is likely dervived from aprokaryotic ancestor, whose membranes still remain as the nuclearenvelope. b. eukaryotic cells clearly evolved from simpler prokaryoticcells c. eukaryotic cells likely evolved from viruses thesimplest prokaryotic forms d. eukaryotic cells require symbiotic bacteria foressential nutrient molecules e. almost all eukaryotic cells contain mitochondria (andsometimes chloroplasts), which are thought to have originated in evolution as prokaryoticcells.
Explanation / Answer
The correct answer is E.There is a theory inBiology called the endosymbiotic theory which suggest that aprokaryote engulfed(ate) another prokaryote (a bacteria) andinstead of digesting it, they formed a symbioytic relationshipwhere the engulfed bacterial cell created energy for the host celland gave rise to mitochondria (and Chloroplasts). The evidencebehind this is that mitochondria and chloroplasts have their owncircular DNA (similar to a bacterium's) and ribosomes, independentof the host cell. Also mitochondria and chloroplasts divide byfission not by mitosis. Also they have outter membranes similar tothose of prokaryotic cell membranes. All of these facts areindicative that mitochondria and chloroplasts were once prokaryotes(bacterial cells). Hope this helps. Please rate and comment.