Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Bio 141 Unit 1
| Question | Answer |
|---|---|
| Location of translation in Eukaryotic and Prokaryotic Cells? | Euk: Nucleus Pro: Cytoplasm |
| Location of transcription in Eukaryotic and Prokaryotic Cells? | Cytoplasm in both |
| 3 types of RNA processing | 1. Capping 2.Add Poly A tail 3.Splicing |
| Where does each step of RNA processing occur? | Capping occurs in the 5' Adding a poly a tail occurs in the 3' end Splicing occurs throughout |
| What happens in each phase of RNA Processing? | Capping protects mRNA and is used for translation initiation Adding poly a tail protect mRNA and is used for transport/as a binding site Splicing removes introns/joins exons |
| How are mRNA sequences read by the translation machinery? | By Ribosomes (A-site, P-site, and E-site) and tRNA which bring in amino acids (Anticodon) |
| What is a codon? | A sequence of three nucleotides that code for specific amino acids |
| What is the open reading frame and how is it determined? | Sequence of DNA or RNA that can be translated into a protein, starting with a start codon and extending without interruption by a stop codon. |
| Ribosome A-site | Bind to arriving tRNA that carry Amino Acids |
| Ribosome P-site | Bind to tRNA carrying amino acids that formed peptide bonds |
| Ribosome E-site | Release/exit tRNAs that no longer carry amino acids |
| What is the function of tRNA? | connects mRNA to codons to the specific amino acids they encode |
| What determines where translation for a particular mRNA will begin | Start codon (AUG) |
| What is a mutation? What are the two main types? | changes in mRNA sequence. Point or Frameshift |
| Types of Frame shift | Insertion deletion |
| Types of point mutations | Silent: has no effect (codes for same amino acid) Missense: Changes sequence which changes function Nonsense: codes for stop codon |
| What is the chemical difference between ribose and deoxyribose? | Ribose has an OH atom at its 2' |
| Why is RNA less stable than DNA. | DNA contains deoxyribose which unlike ribose lacks oxygen the second carbon making it more stable. |
| What defines the 5' end of DNA | phosphate-bearing end |
| What defines the 3' end of DNA | hydroxyl-bearing end |
| What bond links sugar of one nucleotide with phosphate of another | phosphodiester bond |
| what bonds hold base pairs | hydrogen bond |
Created by:
Star06