DEBio 14-16 Visual ID

Place the steps of eukaryotic protein synthesis in order.

• mRNA leaves the nucleus

• RNA is transcribed from DNA template

• introns are spliced out to make mRNA

• tRNA attaches amino acids to the polypeptide chain in codon-order

• mRNA travels to a ribosome for translation

Categorize the following for prokaryotic DNA replication.

Groups:

(a) Leading Strand

,

(b) Lagging Strand

,

(c) both

• RNA primase glues Okazaki fragments together

• happens in 3' to 5' direction of parent strand

• DNA polymerase required

• helicase unwinds a section

• happens in 5' to 3' direction of parent strand

• results in 5' to 3' daughter strand

• nucleotides are added in 5'to 3' direction

• results in 3' to 5' daughter strand

• DNA ligase seals gaps at the end

• RNA primase gets things started

Match the structures with their placement in the models of DNA.

• 3

• hydrogen bond

• 2

• nitrogenous base (zoomed in)

• 1

• nitrogenous bases (zoomed out)

• 5

• sugar phosphate backbone (zoomed out)

• 4

• sugar phosphate backbone (zoomed in)

Tags

NGSS.HS-LS1-1

What kind of bond is at #5?

• ionic bond

• covalent bond

• hydrogen bond

What kind of bond is at #3?

• ionic bond

• covalent bond

• hydrogen bond

What kind of bond is at #4?

• ionic bond

• covalent bond

• hydrogen bond

Place the steps of DNA proofreading in order.

• An incorrect base is added to the daughter strand

• DNA polymerase puts in the correct base

• Replication continues

• DNA begins to replicate

• DNA polymerase removes the incorrect base

Place the steps of DNA mismatch repair in order.

• DNA polymerase adds the correct bases to the gap

• DNA proofreading missed an error during replication

• Mismatch repair proteins remove an errant section

• DNA ligase seals the break in the backbone

• Mismatch repair proteins look for errors after replication

Place these gene regulation processes in the order they would be used.

• transcriptional controls

• translational controls

• post-transcriptional controls

• epigenetic controls

• post-translational controls

What kind of gene expression is shown here?

• prokaryotic

• eukaryotic

Tags

NGSS.HS-LS1-1