2.7 Biology Review

Which of these steps has to happen first?

• Transcription

• Translation

• Replication

• Anti-coding

________________________ occurs because daughter cells need to have the same genetic information as the parental cells.

• DNA replication

• Transcription

• Translation

• Meiosis

Hydrogen bonds are found...

• Along the phosphate-sugar backbone of DNA

• In carbohydrates

• Inbetween nitrogenous bases

• In metamorphic rock

What is the enzyme that breaks apart the hydrogen bonds so that DNA can be replicated?

• Hydrocase

• Polymerase I

• Polymerase II

• Helicase

The enzyme that adds a complementary nucleotides (A-T and C-G) to the separated strand is called...

• Helicase

• DNA Polymerase

• RNA Polymerase

• Adenase

What are the steps of protein synthesis?

• Replication

• Transcription

• Translation

• Peptide Bonding

Which process creates a messenger RNA (mRNA) copy from the original DNA sequence?

• Replication

• Transcription

• Translation

• Peptide Bonding

What enzyme creates messanger RNA (mRNA) from the original DNA strand?

• Helicase

• DNA Polymerase

• RNA Polymerase

• Anticodonase

How is mRNA different than the original DNA strand?

• It has a completely different sequence (it mixes up the letters)

• RNA is single stranded and DNA is double-stranded

• RNA contains uracil instead of thymine

• It has the same sequence as the anticodon

What mRNA code would match this DNA strand? ATTAAGGCCGATAGGATA

• TAATTCCGGCTATCCTAT

• UAAUUCCGGCUAUCCUAU

• AUUAAGGCCGAUAGGAUA

• ATTAAGGCCGATAGGATA