Which statement concerning genetic information in most cells is true?
A) The entire DNA molecule is copied to RNA during DNA replication.
B) A single DNA nucleotide codes for a single amino acid.
C) The flow of information in a cell is from DNA to RNA to protein.
D) The flow of information in a cell is from protein to RNA to DNA.
E) The flow of information in a cell is from DNA to protein to RNA.

Question

Quizplus · Accepted Answer

The statement that the flow of information in a cell is from DNA to RNA to protein is true. This is known as the central dogma of molecular biology and describes how genetic information is used to synthesize proteins in a cell.

Option A is incorrect because only a portion of the DNA molecule is copied to RNA during transcription.

Option B is incorrect because a sequence of three DNA nucleotides (a codon) codes for a single amino acid.

Option D is incorrect because the flow of information cannot go from protein to DNA, as proteins cannot create or alter genetic material.

Option E is incorrect because the flow of information goes from DNA to RNA to protein, not from DNA to protein to RNA.

Which Statement Concerning Genetic Information in Most Cells Is True