Question

(c) (10 marks) Metal ions are important in biological systems. Using diagrams as appropriate to illustrate your answer to explain the following: (i) The roles mono- and divalent-metal ions play in stabilising the secondary and tertiary structure of nucleic acids.

Answer 1

Sodlum, Metal ions such as rinc, coppen calcium Iron etc. does all the various and important role in many enzymatic reactions which helps in body's etabolismo sin jujos) Otto i 2 ms Example 2 : 0 !! ! metal . i Mat/K ATPase and Nat/ca2t exchanger - jonivorliste C membrane spanning rane spanning protein on Soľ0 son pump ر زمانی ه از تر از فرد را Y sau ala2f someone is a bit son carton 1 kt Matt ceart tritt Nakkt Maticate on can ito I ATPase exchangen At.Pang & This sodicum Calcium ex charge occurs in candio' cell's D ivision, Hene the vinst mechanism involves ATP- dependent cat pump which removes calicem from the cell The second mechanism sodium calcium exchanger which excharges callium with sodicom and viceversa.

pragnestu arnesium iona has major role in active site or RNA polymerase as I ng long does the deprotonation or 31014 group of the terminal nucleotide which allows it to attack phosphate bond with in the NTP as a result phosphodiestee bond booms and releasing of pyrophosphate occurs., Hence mane. sium ion plays in the catalytic mechanism or RNA polymerase.. e In DNA polymerase two magnesium cons help in catalyzing addition of new nucleotides to the growing chain as they are positoned to facilitate the polymerization reaction. Kindly, live my answer a "Thumbs up"