Which of the following statements best describes ribozymes?
a. Ribozymes are proteins that aid in the production of ribosomes.
b. Ribozymes are nucleic acids that produce ribose sugars.
c. Ribozymes store enzymes in ribosomes.
d. Ribozymes process RNA molecules in eukaryotes.

Verified step by step guidance

1. Identify the term 'ribozymes' and recall that they are RNA molecules with catalytic activity.
2. Consider the role of ribozymes in biological processes, particularly their involvement in catalyzing reactions.
3. Evaluate each option: (a) mentions proteins, which is incorrect as ribozymes are RNA molecules.
4. Option (b) suggests ribozymes produce ribose sugars, which is not their primary function.
5. Option (d) correctly describes ribozymes as processing RNA molecules, particularly in eukaryotes, which aligns with their known function.

Key Concepts

Ribozymes

Ribozymes are RNA molecules that have the ability to catalyze biochemical reactions, similar to the way enzymes do. They play a crucial role in various cellular processes, including RNA splicing and the synthesis of proteins. Unlike traditional enzymes, which are proteins, ribozymes demonstrate that RNA can also have catalytic functions, supporting the RNA world hypothesis in the origin of life.

RNA Processing

RNA processing refers to the modifications that precursor RNA undergoes to become mature RNA, which is essential for proper gene expression. In eukaryotes, this includes capping, polyadenylation, and splicing, where introns are removed and exons are joined. Ribozymes are involved in some of these processes, particularly in the splicing of introns from precursor mRNA.

Eukaryotic Cells

Eukaryotic cells are complex cells that contain a nucleus and other membrane-bound organelles. They are found in organisms such as plants, animals, and fungi. The presence of ribozymes in eukaryotic cells highlights the intricate mechanisms of gene regulation and RNA processing that are essential for the proper functioning of these organisms.