review DNA to protein

Which base always base pairs with guanine?

• adenine

• cytosine

• thymine

• uracil

Which is the function of the DNA helicase enzyme in the DNA replication process?

• coils new DNA strands

• joins DNA to RNA primer

• matches nucleotide pairs

• unwinds the double helix

Which defines a codon in DNA or mRNA?...

• pair of nucleic acid and sugar

• pair of phosphate and sugar

• three-base code

• two-base code

Which type of mutation causes the DNA replication to stop early?

• addition

• deletion

• frameshift mutation

• nonsense mutation

Which explains how DNA strands fit inside of a cell?...

• DNA strands coil tightly around proteins called histones.

• The average strand is only composed of 50-245 nucleotides.

• The chromatin fibers of DNA are only three molecules thick.

• The double helix shape of DNA greatly reduces its volume.

Which is the central dogma of biology?...

• DNA codes for RNA, which guides enzyme synthesis.

• DNA codes for RNA, which guides protein synthesis.

• RNA codes for DNA, which guides enzyme synthesis.

• RNA codes for DNA, which guides protein synthesis.

The synthesis of mRNA from DNA is called ....

• transcription

• translation

• replication

• meiosis

The process of the mRNA connecting to a ribosome and reading the code to produce a protein is called _______________.

• transcription

• translation

• replication

• meiosis

A type of mutation that is a chemical change in just one base pair is called a(n) ______________.

• point mutation

• deletion

• frameshift mutation

• nonsense mutation

travels from nucleus to a ribosome to direct the creation of a protein

• mRNA

• rRNA

• tRNA

• protein