One reason why rna molecules are the leading candidate as the first informational molecule is that rna molecules are usually double stranded. rna nucleotides are a major component of cell membranes. rna serves as the hereditary material in today's prokaryotic cells. some rna molecules can function as enzymes.

Astudent completed a lab report. which correctly describes the difference between the “question” and “hypothesis” sections of her report? “question” states what she is asking, and “hypothesis” states the result of her experiment. “question” states what she is asking, and “hypothesis” states what she thinks the answer to that question is in “if . . then . . because” format. “question” describes what she is trying to find out, and "hypothesis" states the procedures and methods of data collection. “question” describes what she is trying to find out, and “hypothesis” states any additional information or prior knowledge about the question.