Could rna have been the original site of information storage in the primitive cell? a difficult problem with this possibility is that

Out of the following given choices;

a. RNA is not able to carry information.

b. RNA is more complex in structure than DNA.

c. RNA would get stuck on the inner surface of the nuclear membrane.

d. primitive cells would not let RNA molecules across their membranes.

e. no conditions exist that favor production of both the sugar and base parts of an RNA monomer

The answer is E. According to evolution, the best adaptable trait in an environment is highly preserved. The chemical properties of RNA make large RNA molecules inherently fragile, and they can easily be broken down into their constituent. Therefore it is unconvincing that was it was used to store critical genetic information.  

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)