Which of the following did not provide evidence that chloroplasts arose from the engulfment of a cyanobacterium by a eukaryotic cell? Presence of peptidoglycan in glaucophytes Nucleic acid sequencing Presence of cyanobacterial pigments in red algae Presence of cyanobacterial photosynthetic pigments in green plants Electron microscopy
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Peptidoglycan is a component of bacterial cell walls, but it is not found in chloroplasts. Show more…
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what observation led researchers to propose that chloroplasts evolved from cyanobacteria?
Adi S.
The endosymbiotic hypothesis for the origin of chloroplasts from gram-negative prokaryotes is supported by all of the following lines of evidence except: the presence of enzymes for the light-dependent and the dark reactions of photosynthesis the presence of circular DNA resembling that of photosynthetic eubacteria the presence of mRNA, tRNA, and rRNA similar to that of the cyanobacteria their use of mitosis rather than binary fission during cell division the presence of 70s ribosomes, consisting of 30s and 50s ribosomal subunits
What evidence is there that mitochondria were incorporated into the ancestral eukaryotic cell before chloroplasts?
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