Which of these are substrates of transcription of DNA?
ATP, CTP, GTP and UTP
AMP, CMP, GMP and UMP
ATP, CTP, GTP and TTP
AMP, CMP, GMP and TMP
None of these
What is able to do the enzyme RNA polymerase II?
1.) Unwind the helix of DNA
2.) Catalyze the synthesis of one molecule of DNA
3.) Correct and error in the transcription
1.) and 2.) are true
All are true
What is a transcription factor?
A protein that will bind to DNA and RNA polymerase
A region in DNA sequence that will indicate where is the start of transcription
A region in DNA sequence that will indicate where is the end of transcription
A molecule that will induce the formation of what is called "bubble of transcription"
One enzyme that is necessary to phosphorylate RNA polymerase
RNA polymerase will be phosphorylated just after the "bubble of transcription" is formed
Which of these statements is not true?
5' capping consists in introduce a protection in the end of the non-mature RNA to avoid the degradation of DNA
An AAA (An) tail (Non-coding end sequence) is introduced to eliminate some sequence introduced in the intron
After RNA molecule is finished, there is going to be introduced a polyadenyl tail in the 5' end
The intron of DNA will be cut by a process called splicing
One exon is the area of the sequence of DNA that is transcripted and translated
Which codon indicate when the sequence starts?
UUA
UGA
CCG
AGA
AUG
How many possible reading frames exist?
1
2
3
4
5
During initiation of translation...
mRNA is going to bind to the small ribosomal subunit
mRNA is going to bind to the large ribosomal subunit
An amino acid enters in the Site A of the ribosome
Methionine is placed in the Site E of the ribosome
An amino acid linked to a tRNA enters to the Site P of the ribosome
During elongation, the second amino acid in the protein will enter in the Site A of the ribosome linked to a tRNA
If a molecule of insulin is synthesized, what does it lose when it reach the place where is needed?
Methionine
Signal peptide
A fragment of the sequence, because a fragmentation is done
Its inicial n-dimensional shape (a refolding of the protein is made)
Any of these
Which is the name of the molecules that refold proteins?
Chaperons
Aggregates
Folders
Cleavage factors
Refolding factors
