Chromosomes is the answer
Answer:
The question is incomplete.
However, I notice that your question is mainly dealing with
"Nucleotides with a single ring structure"
I tackled that part, also providing explanation to the point you focused on.
Explanation:
Nucleotides are compounds in which nitrogenous bases (purines and pyrimidines) are conjugated to the pentose sugars (ribose or deoxyribose) and at least one phosphate group. Thus a nucleotide consists of a nitrogenous base, pentose sugar and at least one phosphate group.
Examples of the nitrogenous bases are Adenine, Guanine, Thymine, Uracil and Cytosine. Of all, Thymine, Uracil and Cytosine are with single ring, while Adenine and Guanine are double ring structure.
the answer is B which is a crack in the topmost section of a glacier. I hope you got this right
Air polution can cause things such as asthma, lung cancer, and many other things. air polution could also cause headaches, dizziness, nausea, and more.
Answer: Unlike the one way flow of energy, matter is recycled within and between ecosystems.
Explanation: