1. Biology CP – Phyllis Smith
Comparing RNA & DNA
Biology CP – Phyllis Smith

2. Comparing RNA & DNA DNA RNA Nucleotide Deoxyribose Ribose
Single-stranded
Double-stranded
Nitrogenous bases X X X X X X X X

3. Comparing RNA & DNA DNA RNA Thymine Uracil
Template for synthesis of nucleic acid
Double helix
Replication
Transcription X X X X X X X

4. Comparing RNA & DNA DNA RNA Exact Copy Messenger More Than 1 Form
Found in Nucleus
Leaves Nucleus
Does not Leave X X X X X X X

7. Interpreting Diagrams: Understanding the Main Ideas
DNA codon
mRNA codon
tRNA Anticodon
Amino Acid
AAA
CAG
CCT
CCU
AUG
UAC
GAT
CAC
UUU
Phenylalanine
GTC
GUC
Glutamine
GGA
Glycine
TAC
Methionine
CUA
GAU
Leucine
GUG
CAC
Valine

8. 13.1 and 13.2

9. RNA synthesis Transcription:
Similar to DNA Replication
1. DNA DOUBLE HELIX Unwinds
2. DNA DOUBLE HELIX Unzips
3. RNA Polymerase uses 1 STRAND to create mRNA
Use Promoters – tell the RNA polymerase where to stop and where to end
KEY DIFFERENCE: Only uses one strand from parental DNA NOT BOTH!

10. INTRONS and EXONS
Pre –mRNA must be edited

11. 2 types of RNA mRNA = messenger RNA tRNA = transfer RNA
Same rules of pairing for both mRNA and tRNA
How are the base pairing rules different from DNA?

12. DNA or RNA? CCC – GGG DNA, RNA, or Both? CAT – GUA DNA, RNA, or Both?
UUU – AAA DNA, RNA, or Both?
TGC – ACG DNA, RNA, or Both?

13. The Genetic Code Nucleotides bases = A, C, G, T (U in RNA) Codon
3 nucleotide bases (or letters) = 1 word
Letters of RNA: A, C, G, and U
U =?
U pairs with ?