Lesson 34 & 35

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Quiz by gyorgycrack, updated more than 1 year ago
gyorgycrack
Created by gyorgycrack about 5 years ago
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Transcription and translation test

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Question 1

Question
Which of these are substrates of transcription of DNA?
Answer
  • ATP, CTP, GTP and UTP
  • AMP, CMP, GMP and UMP
  • ATP, CTP, GTP and TTP
  • AMP, CMP, GMP and TMP
  • None of these

Question 2

Question
What is able to do the enzyme RNA polymerase II?
Answer
  • 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

Question 3

Question
What is a transcription factor?
Answer
  • 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

Question 4

Question
RNA polymerase will be phosphorylated just after the "bubble of transcription" is formed
Answer
  • True
  • False

Question 5

Question
Which of these statements is not true?
Answer
  • 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

Question 6

Question
Which codon indicate when the sequence starts?
Answer
  • UUA
  • UGA
  • CCG
  • AGA
  • AUG

Question 7

Question
How many possible reading frames exist?
Answer
  • 1
  • 2
  • 3
  • 4
  • 5

Question 8

Question
During initiation of translation...
Answer
  • 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

Question 9

Question
During elongation, the second amino acid in the protein will enter in the Site A of the ribosome linked to a tRNA
Answer
  • True
  • False

Question 10

Question
If a molecule of insulin is synthesized, what does it lose when it reach the place where is needed?
Answer
  • 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

Question 11

Question
Which is the name of the molecules that refold proteins?
Answer
  • Chaperons
  • Aggregates
  • Folders
  • Cleavage factors
  • Refolding factors
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