- State three differences between DNA and RNA. [answer]
- If a coding strand of DNA is 18- nucleotides, how many amino acids will be in the polypeptide that is formed? [answer] How many nucleotides will be in the mRNA? [answer] How many anticodons will there be? [answer]
- Describe the function of tRNA. [answer]
Use the m-RNA codes and the sequence of the polypeptide shown below to answer the next two questions. Remember, the codes below are mRNA codes, not DNA codes.
AAG - lysine
ACU - threonine
AGU - serine
CAU - histidine
CCG - proline
CUU - leucine
GAA - glutamic acid
GGC - glycine
GUA - valine
UAA - tyrosine
UGA - tryptophan
UUC - phenylalanine
polypeptide: proline-tyrosine-histidine-valine-glutamic acid
- What is the base sequence of the mRNA that codes for the polypeptide? [help with the answer]
- What is the base sequence of the coding strand of DNA that was necessary for the production of the polypeptide? [help with the answer]
- What is the difference between primary mRNA and mature mRNA? [answer]
- What word refers to a part of mRNA that must be removed before mature mRNA is produced? [answer]
- What is the function of mRNA? [answer]
- What is the function of ribosomal RNA? [answer]
- What is a codon? [answer]
- What is transcription? [answer] Describe the process. [answer]
- Define translation. Describe the process. [answer]
- What is meant by the term "genetic code"? [answer]
- What is a point mutation? [answer]
- What is a frameshift mutation? [answer]
- Which of the two mutation types (point or frameshift) are the most serious? Why? [answer]