Which of the following is incorrect evidence to support endosymbiotic theory?
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Eukaryotic cells are believed to have evolved from early prokaryotes that were engulfed by phagocytosis
Show The engulfed prokaryotic cell remained undigested as it contributed new functionality to the engulfing cell (e.g. photosynthesis) Over generations, the engulfed cell lost some of its independent utility and became a supplemental organelle Overview of the Process of Endosymbiosis  Evidence for Endosymbiosis Mitochondria and chloroplasts are both organelles suggested to have arisen via endosymbiosis Evidence that supports the extracellular origins of these organelles can be seen by looking at certain key features: Mitochondria and chloroplasts are similar in size and structure to some species of bacteriaThe ribosomes of chloroplasts and mitochondria are similar to eubacteriaMitochondria and chloroplasts can actively break away from eukaryotic cells and live on their ownMitochondria and chloroplasts have their own DNA coding separate from the eukaryotic nucleus Solution : Mitochondria and chloroplasts can actively break away from eukaryotic cells and live on their own \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\) Learning Objectives
It is thought that life arose on earth around four billion years ago. The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship. Mitochondria formed when bacteria capable of aerobic respiration were ingested; chloroplasts formed when photosynthetic bacteria were ingested. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell. Evidence for this is based on the following:
Although evidence is less convincing, it is also possible that flagella and cilia may have come from spirochetes. Example \(\PageIndex{1}\)
Solutions
SummaryThe endosymbiotic theory states that mitochondria and chlopoplasts in today's eukaryotic cells were once separate prokaryotic microbes. This page titled 7.8: The Endosymbiotic Theory is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Gary Kaiser via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request. Which of the following is incorrect evidence to support the endosymbiosis theory?"The exterior structure similar to bacterial cell walls" IS NOT an evidence in favour of the endosymbiotic theory.
What are 3 evidences of the endosymbiotic theory?Evidence for endosymbiosis. Membranes — Mitochondria have their own cell membranes, just like a prokaryotic cell does.. DNA — Each mitochondrion has its own circular DNA genome, like a bacteria's genome, but much smaller. ... . Reproduction — Mitochondria multiply by pinching in half — the same process used by bacteria.. Which of the following is correct evidence to support the endosymbiotic theory?So, the correct answer is'The mitochondria and chloroplast have their own DNA'
Which of the following is false about the endosymbiont theory?Which of the following is NOT evidence for the endosymbiosis theory? NOT EVIDENCE: Mitochondria and chloroplasts have DNA that is similar to that found in the nucleus.
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