RNA nucleotide structure with base, phosphate, and ribose components.

Let’s look at the diagram carefully.

We see a single strand of nucleic acid with bases attached to a backbone made of phosphate (P) and ribose (R). The legend tells us:

- Green = Adenine
- Purple = Guanine
- Brown = Uracil
- Yellow = Cytosine

Also, note that “R = Ribose” — this is important because ribose is found in RNA, not DNA. DNA uses deoxyribose. So this molecule is RNA.

Now, let’s list the bases shown on the strand from top to bottom:

1. Green → Adenine
2. Purple → Guanine
3. Brown → Uracil
4. Yellow → Cytosine
5. Purple → Guanine
6. Brown → Uracil

Wait — let’s count again by looking at the shapes in order along the chain:

Starting from the top:

- First base: green rectangle → Adenine
- Second: purple rectangle → Guanine
- Third: brown arrow pointing right → Uracil
- Fourth: yellow rectangle → Cytosine
- Fifth: purple rectangle → Guanine
- Sixth: brown arrow pointing right → Uracil

So the sequence of bases is:

Adenine – Guanine – Uracil – Cytosine – Guanine – Uracil

But we usually write nucleic acid sequences using letters:

- A = Adenine
- G = Guanine
- U = Uracil (since it’s RNA)
- C = Cytosine

So the sequence is:

A – G – U – C – G – U

Or written together: AGUCGU

This is the sequence of the RNA strand shown.

Final Answer: AGUCGU