Unit 4: DNA Replication and Protein Synthesis

The function of DNA is to...

(LT 1)

• store genetic instructions for an organisms's growth and development

• be a messenger for genetic information within a cell

• transport amino acids so that they can bond together

• carry the new replicated DNA strand to a ribosome

Nitrogen bases are held together by ______ bonds.

(LT 2)

• Covalent

• Hydrogen

A nucleotide includes all of the following except...

(LT 2)

• phosphate

• Nitrogen Base

• deoxyribose

• Hydrogen Bond

During DNA replication, an enzyme called ____ unzips the DNA molecule.

(LT 3)

• helicase

• ligase

• polymerase

________ adds new nucleotides to an original strand of DNA during DNA replication.

(LT 3)

• Helicase

• Polymerase

• Ligase

The result of DNA replication is...

(LT 3)

• 2 identical DNA double helixes

• 1 strand of RNA

• Polypeptide chain

When nucleotides create an mRNA sequence that is complimentary of the bottom strand of a DNA sequence.

(LT 4)

• DNA replication

• Transcription

• Translation

mRNA leaves the nucleus and is fed into a ribosome where an amino acid chain is created with the help of tRNA.

(LT 4)

• DNA replication

• transcription

• translation

The type of RNA that codes DNA and leaves the nucleus to help with protein synthesis.

(LT 5 and 6)

• mRNA

• tRNA

The type of RNA that is responsible for carrying amino acids and creates a polypeptide chain.

(LT 5 and 6)

• mRNA

• tRNA