There is broad evidence to show that mitochondria and plastids arose from bacteria and one of the strongest arguments to support the endosymbiotic theory is that
both mitochondria and plastids contain DNA that is different from that of the cell nucleus
and that they have their own protein biosynthesis machinery.
What evidence supports the theory of endosymbiosis quizlet?
What evidence exists to support the endosymbiotic origins of eukaryotic cells? The endosymbiotic theory is
based on mitochondria and chloroplasts of eukaryotes
. Both structures have characteristics (such as their own DNA and the ability to self-replicate) of independent prokaryotes.
What are the 3 pieces of evidence that support the endosymbiotic theory?
Numerous lines of evidence exist, including that
mitochondria and chloroplasts have their own circular DNA (prokaryotes also have circular DNA)
, mitochondria and chloroplasts have a double membrane (the inner membrane would have initially been the ingested prokaryote’s single membrane, and the outer membrane initially …
Which of the following is not evidence of the endosymbiotic theory?
“
The exterior structure similar to bacterial cell walls
” IS NOT an evidence in favour of the endosymbiotic theory. Both mitochondria and chloroplasts are double membrane bound.
Which of the following is the best evidence for the serial endosymbiotic theory?
Evidence. Much of the evidence for the endosymbiotic theory comes from the
structure and handling of these organelles’ genetic codes
. Both mitochondria and plastids have DNA sequences in circles as that of bacteria.
Which of the following is not evidence of the endosymbiotic theory quizlet?
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
.
What is the importance of the endosymbiotic theory?
Endosymbiosis is important because it is
a theory that explains the origin of chloroplast and mitochondria
. It is also a theory that explains how eukaryotic cells came to be.
What cell structures are seen in prokaryotes and eukaryotes?
Both prokaryotic and eukaryotic cells have structures in common. All cells have a
plasma membrane, ribosomes, cytoplasm, and DNA
.
Which of the following is most likely to impose a limit on cell size?
The key factor that limits the size of a cell is
the ratio of its surface area to its volume
. Small cell size maximizes the ability of diffusion and motor protein to transport nutrients and waste products.
How did mitochondria originate according to the endosymbiotic theory )?
The endosymbiotic hypothesis for the origin of mitochondria (and chloroplasts) suggests that
mitochondria are descended from specialized bacteria (probably purple nonsulfur bacteria) that somehow survived endocytosis by another species of prokaryote or some other cell type, and became incorporated into the cytoplasm.
Why is endosymbiosis only a theory?
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
. … They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell.
Which of the following Cannot be found in a bacterial cell?
Cell wall
is the correct answer. This is because cell walls are found in plant cell and some fungi and algae . It is not present in bacteria,animals, protozoa,etc.
What organelles supply energy to the cell?
Mitochondria
are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell’s biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
Do mitochondria and chloroplasts have their own DNA?
Chloroplasts and mitochondria are
subcellular bioenergetic organelles with their own genomes and genetic systems
. DNA replication and transmission to daughter organelles produces cytoplasmic inheritance of characters associated with primary events in photosynthesis and respiration.
What are the advantages of Endosymbiotic relationships?
Any
survival or reproductive advantage
can help a species out-compete another species or simply avoid becoming extinct itself. It seems likely that the first eukaryotic cells gained a slight edge over their neighbors when the mitochondria, a rich source of energy, moved in with them.
What is the importance of the endosymbiotic theory quizlet?
Evolutionary theory which
explains the origin of eukaryotes from ancestral prokaryotes
. Proposes that some organelles (Mitochondria and Chloroplasts), evolved from free-living prokaryotes that were engulfed and subsequently became obligate endosymbionants.
