According to the endosymbiosis theory, chloroplasts and mitochondria are derived from bacteria that took up residence within eukaryotic cells. At one time, prior to being taken up by eukaryotic cells, these bacteria were free-living organisms. However, we cannot take a chloroplast or mitochondrion out of a living eukaryotic cell and get it to survive and replicate on its own. Why not?
Answer : Though chloroplasts and mitochondria are considered as semiautonomous organelles, partly their structure and functioning are under the control of nucleus of the cell and availability of biosynthetic machinery/materials from the cytoplasm. Because these organelles are partially dependent on the nucleus they cannot themselves survive and propagate without the ingluence of nuclear encoded genes.
According to the endosymbiosis theory, chloroplasts and mitochondria are derived from bacteria that took up residence...
5. Mitochondria and chloroplasts were once free-living bacteria that later migrated into eukaryotic cells. Mitochondria make energy while chloroplasts prepare their own food. a) If Gregor Mendel were a molecular biologist and laid his hands on a free-living mitochondrion, would he have got his 3:1 ratio crossing two mitochondria? b) In its free-living condition, can a chloroplast code for proteins, and if yes, what are the two most important enzymes that aid in its survival? c) After endosymbiosis, what happenned...
pts Which of the following is FALSE about the Theory of Endosymbiosis? Chloroplasts and mitochondria have their own DNA Chloroplasts and mitochondria are enclosed in a double membrane Chloroplasts and mitochondria divide by a process that closely resembles binary fission Chloroplasts are present in all eukaryotic cells The DNA of chloroplasts and mitochondria is very similar to that of other free-living prokaryotes Previous Next →
Which of the following are generally viewed as evidence that mitochondria and chloroplasts are derived from single celled organisms (select all that apply)? Both miochondria and chloroplasts divide autonomously using a mechanism that resembles binary fission Mitochondrial and chloroplast genomes both exhibit sequence similarity to extant single celled organisms Mitochondria and chloroplasts are both capable of persisting indefinitely outside of eukaryotic cells Both mitochondria and chloroplasts have their own circular genomes
Q23.7: According to the endosymbiotic theory, mitochondria and plastids (e.g. chloroplasts) are descendents of Afree living prokaryotic cells B alpha-proteobacteria. Cfree living eukaryotic cells Da chimeric cell with archaea and bacteria ancestry
1.67 pts According to the Endosymbiotic Theory chloroplasts descend from free living photosynthetic prokaryotes. mitochondria descend from free living photosynthetic prokaryotes, the original cell type was eukaryotic. Omicrospheres were nuclei.
24. Of all the evidence that the mitochondria of eukaryotic cells is derived from endosymbiosis which it the most important? Select one: a. Their inner membrane resembles the composition of those found in many bacteria b. They have two membranes c. Single circular chromosome d. Their ribosomes are the 70S form that are found in all bacteria e. Their DNA has sequences unique to bacteria 25. Which of the following pairs is mismatched? Select one: a. 70S and 50S b....
According to the endosymbiotic theory 24 Multiple Choice all living organisms are composed of cells and that a cell is the smallest unit considered to be living living organisms can arise from non-living matter and that the type of organism formed depends on the type of non-living matter chloroplasts and mitochondria evolved from small prokaryotes that were consumed by a larger eukaryotic cell new species arise when a portion of the population becomes isolated from the remainder of the population...
What is the endosymbiotic theory as it relates to the cellular organelles, mitochondria & chloroplasts, found in eukaryotic cells? There have been several different characters throughout the years that have served as Batman’s sidekick under the codename ‘Robin’. Name as many as you can: The resolution of a microscope (commonly abbreviated as D) is way to objectively describe the magnification ability. As resolution increases by changing objective lens, what happens to depth of field? What is the relationship between magnification,...
Endosymbiosis is an evolutionary theory that explains the origin of eukarvotes and suggests a specific order in which this might have occurred. Ancestral cells enguited and then began to use the metabolic processes of the smaller cells. Based on shared core processes and features, which statement most accurately describes the order, the theorY and the evolutionary implications for all organisms within domain Eukarya? OAll ancestral eukaryotes would have most likely consumed a nucleus-ike prokaryote that eventually became the eukaryotic nucleus....
1. Which of the following are principles of cell theory? A. All living things are composed of one or more cells. B. Cells are the smallest unit of living organisms. C. New cells come only from pre-existing cells by cell division. D. Cells are the smallest unit of living organisms and new cells form from pre-existing cells by cell division. E. All living organisms are composed of one or more cells, cells are the smallest unit of living organisms, and...