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Which of the following reactions occurs when a
dipeptide is formed from amino acids?
A.
Hydrolysis
B.
Denaturation
C.
Condensation
D.
Oxidation
What is removed to form mature eukaryotic mRNA?
A.
RNA primers
B.
Exons
C.
RNA polymerases
D.
Introns
A certain gene codes for a polypeptide that is 120 amino acids
long. Approximately how many nucleotides long is the mRNA
that codes for this polypeptide likely to be?
A.
30
B.
40
C.
360
D.
480
Imagine that an mRNA leaves the nucleus of a eukaryotic cell with
the following base sequence:
AUGCCCCGCACGUUUCCAAGCCCCGGG
1. Determine the amino acids in sequence that are coded for by
the above mRNA molecule.
2. Determine the DNA code sequence which gave rise to the
above mRNA codons.
3. What would the amino acid sequence be if the first cytosine of
the mRNA molecule was replaced with a uracil? (This would be
due to a substitution mutation occurring to the DNA molecule
which transcribed this mRNA.)