Question

What evidence suggests that RNA appeared before DNA? ribozymes, catalytic RNA, play pivotal roles in modern cells ribosomes are composed of RNA-protein hybrids it is the RNA in ribosomes that has catalytic function In modern cells RNA and not DNA is the blueprint to make proteins

Answer 1

Answer:

The evidence that suggests  RNA  appeared before DNA is the fact that RNA can act as an enzyme to self-edit their own genetic code. Moreover, it has the ability to store genetic information, while transfer and ribosomal RNA have the ability to translate genetic information into proteins.

Explanation:

RNA has a great capability as a genetic molecule, it once had to carry on hereditary process on its own. It is absolutely sure that RNA was the first molecule of heredity. However, a single stranded RNA is rather unstable and easily damaged by enzymes. By essentially multiplying the existing RNA molecule, and using deoxyribose sugar instead of ribose.

The DNA evolved as a much more stable form to pass genetic information with accuracy.  It shows a biological evolutionary purpose .

Answer 2

Answer:

1. Ribozymes, catalytic RNA, play pivotal roles in modern cells
2. It is the RNA in ribosomes that has catalytic function
3. Ribosomes are composed of RNA-protein hybrids
4. In modern cells RNA and not DNA is the blueprint to make proteins

Explanation:

DNA, or deoxyribonucleic acid, is like a blueprint of biological guidelines that a living organism must follow to exist and remain functional. RNA, or ribonucleic acid, helps carry out this blueprint's guidelines. Of the two, RNA is more versatile than DNA, capable of performing numerous, diverse tasks in an organism, but DNA is more stable and holds more complex information for longer periods of time.

The evidence that suggests that DNA existed before RNA are the following

-ribozymes, catalytic RNA, play pivotal roles in modern cells

-it is the RNA in ribosomes that has catalytic function

-ribosomes are composed of RNA-protein hybrids

-In modern cells RNA and not DNA is the blueprint to make proteins