Question

Hello! Could anyone please help me with this?

Which one of these statements about polynucleotides is true?
a) the two ends are structurally equivalent
b) the monomeric units are joined together by phosphodiester bonds
c) there are at least 20 different kinds of monomers that can be used
d) purine and pyrimidine bases are the repeating units

I am sure a and c is not correct, I would say it is D, but I am not sure what they are trying to say with B : (

Answer 1

@myininaya maybe you could have a look?

Answer 2

@Luigi0210

Answer 3

hey dont worry about the 99 score people they got their head's too far up their butt's to care about helping others

Answer 4

first off lets start by defining what it is: a linear polymer whose molecule is composed of many nucleotide units, constituting a section of a nucleic acid molecule.

Answer 5

and if that makes sense we can go onwards to the options and we'll eliminate them one by one okay :D

Answer 6

yeah, I understand that:)

Answer 7

I would say a is not correct, because polynucleotide, as I understand, is like one strand of DNA, so basically it means it can end with different 'nucleotides' (like STOP and START codone)

Answer 8

c is not correct, because there are like 4 different kind of monomeres (A, C, G, T/U - depends if it is RNA or DNA)

Answer 9

exactly! well done! As you say, the 5' end has a phosphate group attached to the number 5 carbon of ribose.

Answer 10

so still, I am not sure about B and D...

Answer 11

i agree, B is worded a bit weird lol

Answer 12

best bet would be D

Answer 13

they always reoccur

Answer 14

thanks for your help! I will open another question, would you be able to help?:)

Answer 15

sorry, no can do cracker jack. i have to go out. but you can always tag me and when i get back home i can help then :D

Answer 16

which wont be for a while i dont think but i dont mind :D

Answer 17

thanks! I will do so: }

Answer 18

my duty is to serve