Answer:
In DNA replication, gaps between newly synthesized segments of DNA and existing segments of DNA are sealed by enzymes called<u> ligases</u>, which form covalent bonds between the two segments.
Explanation:
During DNA replication, there is a continuous strand of DNA and fragments of DNA called Okazaki fragments. The DNA ligase will join the Okazaki fragments using ATP's energy and creating a covalent bond between the phosphate of a nucleotide in an Okazaki fragment and the sugar of a nucleotide in another Okazaki fragment. As a result, there are two continuous DNA fragments.
Answer: I believe the right answer is B) atmospheric nitrogen→bacteria→plants→animals. I'm pretty sure!
Sorry for answering a bit late, hope that helps! :-)
A : DNA in the nucleus of the egg controls all cell activities
Answer: Petrolatum, lanolin, mineral oil and dimethicone are common emollients. Humectants, including glycerin, lecithin, and propylene glycol, draw water into the outer layer of skin.
