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12 Cards in this Set
- Front
- Back
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What are the building blocks of DNA? |
Nucleotides |
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What bonds hold together nucleotides in RNA? |
. Phosphodiester bonds |
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Which of these bases have a double-ringed structure(rather than a smaller, single ringed structure) |
A and G |
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How many base-pairs fit within one full turn of the double helix? |
10 |
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Match the type of RNA with it's function. |
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DNA uses thymine, while RNA uses Uracil. Why? |
Uracil is likely to be chemically damaged if it were used in DNA, the mutation data would be too high |
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Which of these statements are TRUE about transcription in prokaryotes, but not TRUE about transcription in eukaryotes: 1)Donzens of transcription factors make a complex at the promoter before transcription can begin 2)A sigma factor bonds to the -10 and -35 boxes of the promoter and recruits RNA polymerase 3)The TATA-binding protein bonds to the TATA box upstream of the transcription start site 4)The transcription is modified on it's 3'end by addition of protective cap 5) One transcript can make multiple proteins through alternative splicing exons 6)A ribosome can bind to the newly made mRNA while that same RNA is still being transcribed from the gene |
2,6 |
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The complementary base pairing of nucleotides in a DNA molecule is a structural feature that has important implications for DNA's function. What is the structural relationship between purine and pyrimidine nucleotides? |
Complementary base pairs always include one purine nucleotide(G or A) and one pyrimidine nucleotide (T, C or in case of RNA, U) because of the different number of hydrogen bonds that can form between A and T pairs and C and G pairs |
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In prokaryotes, newly synthesized proteins are found in___________ and DNA are obeserved in __________ |
The nucleus, both nucleus and cytoplasm |
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Match the statement about transcription with the word that completes the sentence |
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The double helical structure of DNA is stabilized by which forces? |
Hydrophobic interactions, Van der Waals interactions and hydrogen bonding |
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What are the building blocks of proteins? |
Amino acids |
