Transciption
The process by which genetic information is copied from DNA to RNA, is called what?
Transcription
Where is the codon found?
mRNA.
What are the three parts of DNA nucleotides?
1. Deoxyribose
2. Phosphate group
3. Nitrogen Base.
What are the products of transcription?
RNA.
What happens at the ribosomes?
Translation.
What are the four nitrogen-containing bases found in DNA nucleotides?
Adenine, guanine, cytosine, and thymine.
What is the stop codon or termination signal? What do stop codons do? How many are there?
Three stop codons and they tell translation to stop. It includes: UAA, UAG, or UGA
If the codon is AGU, what would the strand complementary to the template strand be?
Template strand = TCA
Complementary strand to template strand = AGT
What is the site of transcription?
Nucleus.
What is the site of translation?
What is the double helix?
Two nucleotide chains that wrap around each other to form a double spiral.
What is complementary and pairs with a corresponding mRNA codon?
tRNA anti-codon.
What is RNA polymerase?
Breaks hydrogen bonds between DNA.
Adds RNA nucleotides to DNA sequence.
mRNA leaves through the _______________ of the ___________________ to the ribosomes.
1. Nuclear pore
2. Nuclear membrane.
What happens when each codon is sequentially paired with its anticodon?
On the opposite side, tRNA adds an amino acid to the polypeptide chain.
What is the name of each combination of three mRNA nucleotides?
Codon.
A always pairs with T (2 hydrogen bonds)
G always pairs with C (3 hydrogen bonds).
What is the role of DNA polymerase? How is it different from RNA polymerase?
Add DNA nucleotides
- It does not break the hydrogen bonds like RNA polymerase.
AAA would bind to the mRNA codon sequence of UUU and would be specific for which amino acid?
Phenylalanine
How does the structure of RNA and the structure of DNA differ?
1. Sugar in RNA is ribose but in DNA it is deoxyribose.
2. RNA has uracil not thymine.
3. RNA is single-stranded. DNA is double stranded.
If the template strand is AGA TCG AGG, what would be the mRNA strand?
UCA AGC UCC.
What is the role of tRNA?