D. Enzyme is catalytic, reusable, complex protein and is responsible for speeding up chemical reactions within cells.
As discussed in Chapter 3, DNA replication is a semiconservative process in which each parental strand serves as a template for the synthesis of a new complementary daughter strand. The central enzyme involved is DNA polymerase, which catalyzes the joining of deoxyribonucleoside 5′-triphosphates (dNTPs) to form the growing DNA chain. However, DNA replication is much more complex than a single enzymatic reaction. Other proteins are involved, and proofreading mechanisms are required to ensure that the accuracy of replication is compatible with the low frequency of errors that is needed for cell reproduction. Additional proteins and specific DNA sequences are also needed both to initiate replication and to copy the ends of eukaryotic chromosomes.
Answer:
(B) DNA polymerase recognizing a "mismatched" base pair, like adenine and guanine.
Explanation:
In DNA, adenine is always paired with thymine and guanine with cytosine. The DNA polymerase has 3' to 5' exonuclease activity which is also called proofreading activity. If a DNA polymerase adds the wrong nucleotide, it can not be translocated post the mismatched nucleotide. The pause allows the 3' to 5' exonuclease activity of DNA polymerase to remove the mismatched nucleotide followed by the addition of a correct nucleotide.
Answer: (I HOPE THIS HELPS) Antlions experience competition when there is a scarcity of food and few spaces to burrow in the sand. This happens during their larval stage when there is an overlap on their reproduction where the large ones consume the small ones for survival.