Answer:Cell cycle
Explanation:
It's a series of events that take place in a cell leading to duplication of its DNA and division of cytoplasm and organelles to produce two other cells.
The correct option is D. There are four different nitrogenous bases in DNA molecules; these bases are joined together by different forces including hydrogen bonds. In DNA molecules, there are two hydrogen bonds between adenine and thymine while there are three hydrogen bonds between cytosine and guanine. Thus, the hydrogen bonds between cytosine and guanine is the stronger.
