Question

which statement best describes the relationship between proteins and nucleic acids?
○ proteins read the instructions that are contained in nucleic acids.
○ nucleic acids synthesize the amino acids for protein construction.
○ nucleic acids provide the blueprint for the construction of proteins.
○ proteins are composed of nucleic acids.

Explanation:

1. Analyze each option:

• Option 1: Proteins don't read nucleic acid instructions; ribosomes and tRNA, etc., are involved in translation, and nucleic acids (DNA, RNA) hold the genetic code. So this is incorrect.
• Option 2: Nucleic acids don't synthesize amino acids. Amino acids are either obtained from diet or synthesized by metabolic pathways in cells, not by nucleic acids. So this is incorrect.
• Option 3: Nucleic acids (DNA and RNA) contain the genetic information (blueprint) that is used to direct the synthesis of proteins. DNA is transcribed to RNA, and then RNA is translated into proteins. So this option correctly describes the relationship.
• Option 4: Proteins are made of amino acids, not nucleic acids. Nucleic acids are made of nucleotides. So this is incorrect.

Answer:

Nucleic acids provide the blueprint for the construction of proteins.