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WorksheetsModule 8 Part 1
Total questions: 25
Worksheet time: 21mins
In the mRNA. triplet codons specify one
(a)
What is the start codon?
Select all that is true: What are the stop codons?
UAA
UGA
UAG
UGG
determined by the site of the initiation AUG
(a)
•adapt genetic information present as specific triplet codons in mRNA to their corresponding amino acid.
(a)
tRNAs are Transcribed from DNA by
1
(a)
2
(a)
3
(a)
4
(a)
•Before translation can proceed, tRNA molecules must be chemically linked to their respective amino acids.
This activation process (charging or aminoacylation) is done by
•stated that there is a degeneracy at the third position and that the first two positions are more critical.
Crick
Watson
Pasteur
Leeuwenhoek
proposes a more flexible base pairing at the codon's third position
(a)
In bacteria, the initial amino acid incorporated into all proteins is a modified form of methionine
the biological polymerization of amino acids into polypeptide chains
(a)
Select all that is true: The process of translation requires
amino acids
messenger RNA
ribosomes
transfer RNA
proteins
1
(a)
2
(a)
3
(a)
4
(a)
5
(a)
6
(a)
Which step during initiation of translation?
mRNA and IF1 bind to small subunit
IF2 and IF3 bind to complex; initiator tRNA binds to mRNA codon in P site
Large subunit binds to complex; IF factors are released; EF-Tu binds to tRNA, facilitating entry into A site
Second charged tRNA has entered A site, facilitated by EF-Tu
Which step during initiation of translation?
mRNA and IF1 bind to small subunit
IF2 and IF3 bind to complex; initiator tRNA binds to mRNA codon in P site
Large subunit binds to complex; IF factors are released; EF-Tu binds to tRNA, facilitating entry into A site
Second charged tRNA has entered A site, facilitated by EF-Tu
Which step during initiation of translation?
mRNA and IF1 bind to small subunit
IF2 and IF3 bind to complex; initiator tRNA binds to mRNA codon in P site
Large subunit binds to complex; IF factors are released; EF-Tu binds to tRNA, facilitating entry into A site
Second charged tRNA has entered A site, facilitated by EF-Tu
