Chapter 8 Review

What are the three parts of nucleotide in DNA?

• deoxyribose phosphate group + nitrogenous base

• cytosine + phosphate group + uracil

• deoxyribose + phosphate group + polymerase

• ribose + phosphate group + nitrogenous base

What parts of nucleotide make RNA and DNA nucleotides different

• Sugars

• Uracil

• Bonds

• Nitrogen Bases

DNA replication results in two DNA molecules,

• each with two new strands.

• one with two new strands and the other with two original strands.

• each with one new strand and one original strand.

• each with two original strands.

What bonds hold nitrogenous bases together?

• Peptide bonds

• Covalent bonds

• Ionic bonds

• Hydrogen bonds

What type of bond hold amino acids together

• nucleotides

• hydrogen bonds

• peptide bonds

• covalent bonds

Replicate this strand:

Original: ATTGCG

• GCGTTA

• UAACGC

• TAACGG

• TAACGC

Which two base pairs are purines

What does DNA Helicase do?

• unzip the DNA

• Zip the DNA

• Adds base pairs and proofreads

Which molecule in replication, adds new nucleotides and proofreads

• DNA Helicase

• DNA Ligase

• DNA Polymerase

• RNA Polymerase

Define mRNA? 

• 1. makes up ribosomes

• carries the genetic code from the DNA to the rest of the cell

• 1. transfers amino acids to the ribosome