Recent evidence suggests that may have been the first nucleic acid system to form. a) proteins. b) dna. c)rna. d) none of the above

The correct answer is option C- RNA.

Explanation:

RNA World Hypothesis suggested that RNA was the molecule which was utilized by the earliest life on Earth as genetic material and as an enzyme.

The reactions performed by the ribozyme required strands of RNAs which is made up of 30-40 nucleotide which still catalyze the reactions like the process of central dogma and even the single-stranded RNAs in the absence of enzymatic catalysts were able to replicate via template-directed polymerization. This suggests that RNA served as the genetic material prior to DNA.

Thus, option C- RNA is the correct answer.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.