Commensalism is the relationship between two organisms where one benefits from the other and the other is not affected in anyway. The interaction between the remora and the shark demonstrates this relationship.
Mouth, esophagus, stomach, small intestine, large intestine and anus
DNA has 3 components; phosphate, a sugar called deoxyribose (a 5 carbon sugar as opposed to the sugar in the picture which is a 6 carbon sugar - glucose) and a nitrogenous base (adenine, thymine, guanosine or cytosine). So if you look at those 3 pictures, the only one is the nucleotide that's part of the DNA.
Re-read the question: the presence of phosphorous is the answer!!
Answer:
Explanation:
plasma/cell membrane and cytoskeleton
Some materials contract when heated rather then expand as most materials do.