Molecular Genetics: Question Preview (ID: 12822)


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During the transcription step of protein synthesis the enzyme_________ unzips DNA
a) DNA ligase b) DNA polymerase c) DNA nucleobase d) DNA fantastic
How many amino acids would be on a protein chain that was made by a gene with 30 nitrogenous bases?
a) 3 b) 10 c) 30 d) 90
The stop codon is always last what would happen if a framshift occured?
a) The strand of amino acids would continue until it reaches next stop codon b) It restarts c) A new version of a stop codon is added next d) The chain breaks
What links amino acids?
a) hydrogen bonds b) peptide bonds c) fatty acid bonds d) glue
When AAA CGU UUA is changed to AAA CCU UUA what occurs?
a) Insertion b) Frameshift c) Substitution d) Deletion
When there is a framshift there is _________ or _________ of a base.
a) Deletion, substitution b) substitution, addition c) addition, insertion d) insertion, deletion
Which is not a DNA nitrogenous base?
a) Cytosine b) Thyamine c) Guanine d) Uracil
DNA and RNA are both ________.
a) molecules b) chemicals c) nucleic acids d) all of the above
Which of the following RN base sequences is complementary to the DNA sequence AAA TTT CCC GGG
a) AAA TTT CCC GGG b) TTT AAA GGG CCC c) UUU AAA GGG CCC d) UUU AAA CCC GGG
Order the components of nucleic acids from smallest to largest.
a) nitrogenous base, codon, chromosome, gene, genome b) nitrogenous base, codon, gene, chromosome, genome c) codon, gene, chromosome, nitrogenous base, genome d) genome, chromosome, gene, codon, nitrogenous base
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