2A. Object is solid. The object was a full can of soda. We also gave credit for object B in case you counted it as solid. Cytosine is a pyrimidine. Adenine pairs with guanine in the DNA molecule.
Thymine is a nucleotide.
Structurally, the DNA molecule forms a double helix. The answer is B. Adenine pairs with thymine. Five nucleotides have been added to a DNA molecule. The answer is C. 22. In lab we performed an experiment that tested the effects of UV radiation on fungal spores.