Flashcard Set Preview
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| 1 |
RNA Polymerase binds to the _______ of a gene.
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Promoter.
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| 2 |
Non-coding portions of RNA are called ____ where as coding sequences are_____.
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Introns, Exons.
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| 3 |
What is the purmpose of the poly-A tail on the mRNA?
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To protect it from enzymes in the cytosol.
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| 4 |
Ribosomes are made of?
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DNA. RNA, and proteins.
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| 5 |
The sugar in RNA is ___, where as the sugar in DNA is ____
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Ribose, Deoxyribose.
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| 6 |
RNA molecules usually exist as ___ strand, while DNA usually is a ___ strand.
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Single, Double.
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| 7 |
The nucleotide ___ is found only in DNA, where as ___ is only in RNA
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Thymine, Uracil
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| 8 |
RNA is synthesized on a DNA template in the process of ____ and uses the enzyme ____.
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Translation, DNA polymerase.
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| 9 |
The RNA molecule that is transcribed from DNA and carries information to code for polypetides...
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mRNA
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| 10 |
Given the following DNA sequence, TACATGTTCCAGCCTACT, what would the complimentary RNA sequence be?
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AUGUACAAGGUCGGAUGA
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| 11 |
Teh sequence of the three nucleotides in an mRNA molecule that codes for a specific amino acid...
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A codon.
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| 12 |
Proteins can have _____ amino acids while nucleic acids can have ____ different nucleotides.
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20, 4.
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| 13 |
When the mRNA contained UUUUUU... Nirenberg found that it coded for?
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Phenlyalanine.
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| 14 |
Which statement is true of mutations?
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Some substitutions of nucleotides do not alter the amino acid coded for.
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| 15 |
Once transcription is complete, which is NOT necessary for protein synthesis to continue?
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DNA.
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