IB Biology Nucleic Acids Retake

What is the primary function of nucleic acids in living organisms?

• Store and transmit genetic information

• Regulate gene expression

• Facilitate cellular respiration

• Serve as structural components of cells

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What are the building blocks of nucleic acids?

• amino acids

• carbohydrates

• lipids

• nucleotides

What are the three components of a nucleotide?

• sugar group, phosphate molecule, nitrogenous base

• sugar molecule, phosphate molecule, nitrogen base

• sugar molecule, phosphate group, nitrogenous base

• sugar molecule, phosphate group, nitrogen base

What is the structure of DNA?

• double helix

• quadruple helix

• triple helix

• single strand

What is the structure of RNA?

• RNA is a lipid composed of fatty acids.

• RNA is a single-stranded molecule composed of nucleotides connected by phosphodiester bonds.

• RNA is a protein composed of amino acids.

• RNA is a double-stranded molecule composed of nucleotides connected by phosphodiester bonds.

What are the three types of RNA?

• mRNA, rRNA, DNA

• mRNA, tRNA, DNA

• mRNA, tRNA, rRNA

• tRNA, rRNA, DNA

What is the process of DNA replication?

• DNA replication is the process by which a single-stranded DNA molecule is copied to produce two identical DNA molecules.

• DNA replication is the process by which RNA is copied to produce two identical RNA molecules.

• DNA replication is the process by which a double-stranded RNA molecule is copied to produce two identical RNA molecules.

• DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.

What is the role of transcription in gene expression?

• Transcription converts mRNA into DNA for protein synthesis.

• Transcription converts DNA into mRNA for protein synthesis.

• Transcription converts RNA into DNA for protein synthesis.

• Transcription converts DNA into tRNA for protein synthesis.

What is the process of translation?

• Conversion of DNA into amino acids

• Conversion of tRNA into amino acids

• Conversion of rRNA into amino acids

• Conversion of mRNA into amino acids

How does the genetic code determine the sequence of amino acids in a protein?

• The genetic code is randomly generated during protein synthesis.

• The genetic code is determined by the environment in which the protein is synthesized.

• The genetic code is a set of rules that determines how the sequence of nucleotides in DNA or RNA is translated into the sequence of amino acids in a protein.

• The genetic code is determined by the size of the protein.

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