DNA Replication and Protein Synthesis Test Review

This diagram sows the structure of

• a DNA molecule.

• an amino acid.

• a RNA molecule.

• a protein.

In eukaryotic cells, where does DNA replication take place?

• cytoplasm

• nucleus

• ribosome

• vacuole

Based on the diagram and your knowledge of biology, structures 3 and 4 are held together by

• weak peptide bonds.

• weak hydrogen bonds.

• strong hydrogen bonds.

• strong peptide bonds.

The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process?

• DNA opens up and RNA copies it.

• DNA opens up and completely unwinds to make two new molecules.

• DNA opens up and each strand is used as a template for a new strand.

• RNA opens up the DNA and uses each strands as a template for a new strand.

The bond represented by number 5 is a _______ bond.

• covalent

• hydrogen

• ionic

• peptide

Which statement below BEST summarizes the tole of the DNA molecule in cells?

• guides cell division.

• protects cells from infection.

• provides the instructions for making proteins.

• regulates the chemical processes that provide the cell with energy.

How many nucleotides are needed to specify three amino acids?

• 3

• 6

• 9

• 12

There are 64 codons and 20 amino acids. Which of the following is true?

• Several different codons can specify the same amino acid.

• Each codon specifies a different amino acid.

• Some amino acids have no link to a codon.

• Each amino acid is specified by only one codon.

Which amino acid is specified by the mRNA code CCC?

• Gly

• Pro

• Ala

• Lys

Which is the correct sequence of the "central dogma of genetics?"

• protein to DNA to RNA

• RNA to DNA to protein

• RNA to protein to DNA

• DNA to RNA to protein