A complex of ribosomes attached to a single strand of RNA is known as

The correct option is D

Polysome

The correct option is D.

Explanation of correct option:

1. Ribonucleic acid or RNA plays a vital role in translation.
2. The ribosome is a complex of RNA and protein.
3. It acts as a site for protein synthesis.
4. A complex of ribosomes attached to a single strand of RNA (mRNA) molecule is known as polysome.
5. They are found in the cytoplasm.
6. Polysomes translate mRNA into a polypeptide chain.

Explanation of incorrect option:

Option A:

1. Short fragments of DNA are synthesized discontinuously on the lagging strand.
2. These fragments are known as Okazaki fragments.

Option B:

Polypeptide refers to a chain of amino acids that are linked together by peptide bonds.

Option C:

1. Polymers are large molecules made of repeating structural units.
2. They can be natural or synthetic.

Final answer: A complex of ribosomes attached to a single strand of RNA is known as polysome.