Ilwhich af the falcuing ani tuu negacling Prions Selictall answexs Uhat ane true
ID: 196686 • Letter: I
Question
Ilwhich af the falcuing ani tuu negacling Prions Selictall answexs Uhat ane true A uy an Proteins B thuy on made up of nucdlec auds c thy cause Proteuns to dagradu D lthusy Convert specafic normal Pacteins into ions E thiy Cause nudleic aads to dug adi. 2 Selic t all of the follo a fllowing uwlich ane probably impostant in tha evoluctan of the cel A Caxbohudkdi Covexsian into Pcteins B Protein evolution into DNA fomation of organic malea _DIRNA bang-able townemadulttself rganic anus Elipid assocication with DNA iin the blank: Pions anu duiffenant from their noimal Countex part in Soma ways they ana Smlar is 4Trua Hase Based on cur Cumut understanding cf all evolution thune wene onganic easth when tha earth fosmad malecuulis P nesent on te tase all of the falwing which ane usel by Hv vus entar a host cell. Seluct any maleculs that apeli egandless of the host cell (T-cell.or mackaphoge S Selid A CDR4 C.CDH E. CXRRSExplanation / Answer
Prions are infectious proteins that cause specific normal proteins to misfold and accumulate in the cell as amyloids, causing cell death leads to neurodegenerative disorder. Hence A and D are correct. Following are the most important steps in cell evolution Protein evolution into DNA Formation of organic molecules from inorganic molecules RNA being able to self replicate. The above points signify the transitions that might've occured in the primitive cell to form a eukaryotic cell. Ranging from formation of coacervates to enzymes like reverse transcriptase and RNA polymerase, all have played an important role in cell evolution Protein sequence is same in prions and normal proteins. False, Primitive earth had gases like CO2, N2, H2S etc. The lightning and the rains formed the chemical soup, where organic molecules were formed from the pre-existing inorganic ones CD4, CCR5 are used by HIV to enter host cells like T-cells and microphages. (B , C) False, budding is used by viruses to exit a cell, rather than enter the cell.