of the ?bove. 31. Which of the following bacteriol structures shre nnmbii gonell
ID: 3165574 • Letter: O
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of the ?bove. 31. Which of the following bacteriol structures shre nnmbii gonelles, and provide evidence for Lynn Margui brane proteins of the plasma momlers s common evotutionary orign with sieilsr structres i b) Tylakoids in cyanodbocterio, endomam e peplof acterio, endomembranes in proteobacterioa Peptidoglycan cell wall. e) None of the above logy: o sporozoitetrea,in,vivox undergoes three different phones. develops in liver etow the the gut and salivary glonds of the mosquito 32. in its dual-host life cy buman host, and o gametocyte phose thot poring parasine a very distinct morphology: o sporect gut and s ector, a merozoite phase that develops in liver (olle ng best explains why the develops in human red blood cells. Which of al species of unicellulor endoparasitic eam of human host, it releases the strikingly differem? a) Plasmodium vivax itself is a host oruced and b) c) Piasmodium vivax contains severted that maks the conditions d) All of the explanations are equain protists. When Plasmodium is introdu ef endoparasites, which migrate to thenroins dnd the timore expressed di, nental sequence The genome of Plasmodium vivax nism, gen conditions of the location of the oradistinct equally plausible in hous the dequr srevelopmde shown exploin the contains gene Gre selectively activatein thaired via secondary endosymbiosis explainin hing of pending stoch acquired via enle in exP each unique developmental sequence onditions of the location of the orgoni e morphological differences in differences in Plasmodium vivax. The genomes are selectively tne prot and contain genes that encode ble developmentol form. cot Plasmodium vivax. e) None of the explanations sExplanation / Answer
31] Option [b] Thylakoids in cyanobacteria, endomembranes in proteobacteria
Reason-- The endosymbiosis theory proposed by Lynn Marguilis revolutionised the earlier theories of origin and evolution of life on our planet. Two cell organelles have their own DNA and can make copies of themselves. One is the mitochondria and the other is the plastid. Since thyllakoids are a part of the plastids found in eukaryotic plant cells, it was proposed that they have been incorporated into the plant cells from cyanobacteria [ blue-green algae which can perform photosynthesis]
Mitochondria have evolved from aerobic bacteria.
32 ] Option -- [c] P.vivax contains several distinct genomes, each aquired by secondary endosymbiosis. The genomes are selectively activated depending on the conditions of the location of the organism and contain genes that encode the proteins that make each unique developmental form.
Reason -- Research on P. vivax has shown that although the parasite resembles other malaria parasite in gene content and metabolic potential but they possess novel gene families and potential alternate invasion pathways not recognised previously.
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