Question

1.

Which base is found only in RNA nucleotides?
A: uracil
B: thymine
C:cytosine
D:adenine

Answer 1

The answer is A. Uracil hope this helps

Answer 2

`\boxed {\boxed {\sf A. \ Uracil}}`

Step-by-step explanation:

DNA (deoxyribonucleic acid) has two chains of nucleotides that form a double helix that resembles a twisty ladder. The nucleotides are:

• Adenine (A)
• Guanine (G)
• Cytosine (C)
• Thymine (T)

RNA (ribonucleic acid) is different. It only has one chain of nucleotides. The bases are also different:

• Adenine
• Guanine
• Cytosine
• Uracil (U)

We see that RNA has a different base! It contains uracil instead of thymine. The correct answer must be A. uracil