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10 Cards in this Set
- Front
- Back
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1. A + T = G + C 2. A + C = G + T 3. (A + G)/(C + T) = 1 4. A / C = G / T |
1. F 2. T 3. T 4. F |
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The classic Hershey and Chase experiment that offered evidence in support of DNA being the genetic material in bacteriophages made use of the what components? |
Phosphorus and sulfur |
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What results did Avery, McLeod and McCarty obtain in their experiments with virulent bacteria? |
DNase destroyed the transforming activity |
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What is the main functioning of supercoiling in the cell? |
Supercoiling makes DNA more compact |
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Is positive or negative supercoiling most beneficial for the cell? Why |
Negative because it is much easier to unwind to begin replication than it is positive supercoiling. |
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1 Ring Base = ? 2 Ring Base = ? |
C, T, U A & G |
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What kind of chemical bond is involved in base-pairing? |
Hydrogen bonding |
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How many hydrogen bonds exist in the different base-pair combinations in DNA? (A & T, G & C) |
A & T = 2 bonds G & C = 3 bonds |
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Order from simplest level of chromatin structure to most complex/compact: 1 Nucleosome 2 Solenoid (30nm fiber) 3 Chromatosome 4 Beads on a string |
(simplest) 1, 3, 4, 2 (complex) |
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Indicate whether the following are of Hetero chromatin (H) or Euchromatin (E) 1. Typically associated w/ expressed genes 2. typically associated w/ non-expressed genes 3. Beads on a string level of chromatin compaction |
1. E 2. H 3. E |
