Question

1. what does the rna world hypothesis suggest? a. dna is required to make proteins by all living organisms. b. rna can self - replicate and act as its own catalyst. c. rna is not needed to make proteins. d. both a and c 4. which of the items below is not evidence that supports the rna world hypothesis? a. the dna - protein system is too complex to have developed on its own without a simple initial method. b. the rna molecule is a storage unit for genetic information. c. rna monomers were able to create short segments from an rna strand. d. the discovery of ribozymes showed that rna had the ability to self - catalyze.

Explanation:

1. RNA world hypothesis suggests RNA could self - replicate and act as a catalyst. Option B is correct as it reflects these key aspects. Option A is wrong as RNA, not DNA, is central in the RNA world hypothesis for early life processes. Option C is incorrect since RNA is involved in protein synthesis. Option D is wrong because A and C are incorrect.
2. The DNA - protein system's complexity not being a simple initial method is evidence for the RNA world hypothesis as it implies an earlier, simpler system (RNA - based). RNA being a genetic information storage unit, RNA monomers forming short segments, and the discovery of ribozymes are all evidence for the RNA world hypothesis. None of the options here are non - evidence. But if we assume there is a mis - statement somewhere, perhaps the question setter might consider the DNA - protein system complexity statement as something that doesn't directly support the RNA world in a positive sense compared to the other more direct RNA - related evidences. But this is a bit of a stretch as all are valid supports.

Answer:

1. B. RNA can self - replicate and act as its own catalyst.
2. A. The DNA - protein system is too complex to have developed on its own with a simple initial method.