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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 to the independent genes of the free living mitochondria and chloroplasts?
a) Mitochondria were once the free-living bacteria. The bacteria reproduce asexually. Due to this, when bacteria reproduce, then its daughter cells will be the same as the parents and with each other. So, here mendelian ration is not 3:1, but is 1:1.
b) In living conditions, chloroplast can produce proteins. Two RNA polymerases are used in this process by the chloroplasts.
c) During endosymbiosis, the circular DNA of mitochondria and chloroplast remains independent.
5. Mitochondria and chloroplasts were once free-living bacteria that later migrated into eukaryotic cells. Mitochondria...
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?
(2). Consider that mitochondria and chloroplasts were once free-living prokaryotes. If you isolated these organelles from a plant, which of the following structures would you expect to find? Choose all of the correct answers. (1 point) (a) plasma membrane (b) ribosomes (c) circular DNA (d) linear chromosomes (e) ribosomal RNA (f) proteins (g) nucleus
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....