The component that CANNOT be part of this strand is A uraciluracil.
In DNA, the four nitrogenous bases are adenine (A), guanine (G), cytosine (C), and thymine (T). Uracil (U) is found in RNA instead of thymine.
The options given are:
A uraciluracil
B thyminethymine
C phosphate group
D deoxyribose sugar
Since uracil is not one of the four nitrogenous bases found in DNA, option A is the correct answer. The correct answer should be one of the nitrogenous bases (A, G, C, or T) or the other components of DNA, such as the phosphate group or the deoxyribose sugar.
