Molecular Biology

Cell division and other molecular processes

The building blocks of DNA are:





The nitrogenous bases in DNA are:





In DNA, adenine always pairs with:





The shape of a DNA molecule is described as a:





The backbone of DNA is made of:





Which base is found in RNA but not in DNA?





The sugar in RNA nucleotides is:





The process of copying DNA into mRNA is called:





In transcription, the enzyme responsible for building RNA is:





Where does transcription occur in eukaryotic cells?





Translation takes place in the:





Each set of three bases in mRNA that codes for one amino acid is called a:





The molecule that brings amino acids to the ribosome is:





What is the start codon for protein synthesis?





Which type of RNA forms the core of the ribosome?





DNA replication is described as:





Which enzyme unzips the DNA double helix during replication?





Which enzyme adds new nucleotides to a growing DNA strand?





Which enzyme seals gaps in the sugar-phosphate backbone during replication?





DNA replication occurs during which phase of the cell cycle?





A change in the DNA sequence is called a:





Which type of mutation is most likely to be harmful?





A point mutation involves:





Which of the following mutations does NOT change the amino acid sequence of a protein?





Mutations in body (somatic) cells:





PCR (polymerase chain reaction) is used to:





Gel electrophoresis separates DNA fragments based on:





The genetic code is described as universal because:





Recombinant DNA technology involves:





Which of the following best explains gene expression?