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nata0808 [166]
2 years ago
12

9. A protein molecule which is denatured, has

Biology
1 answer:
seraphim [82]2 years ago
4 0

Answer: B. combined with another molecule

Explanation:

i just took the test

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A new DNA strand elongates only in the 5' to 3' direction because _____.
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Answer:

d. DNA polymerase begins adding nucleotides at the 5' end of the template

Explanation:

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Because DNA polymerase only acts in a 5' to 3' direction, replication along a chain, the leading chain, occurs continuously. The synthesis of the opposite chain, the delayed chain, occurs discontinuously because the DNA polymerase must wait for the replication fork to open. Over the delayed chain, short segments of DNA called Okazaki fragments (named after Reiji and Tsuneko Okazaki, the scientists who discovered these fragments) are synthesized as polymerase DNA works out of the replication fork. Ligase DNA catalyzes the covalent bonds between Okazaki fragments in the delayed chain to ensure there are no gaps in the phosphodiester skeleton. Finally, the first ones are removed and these gaps are filled by the DNA polymerase.

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