Which Base Is Present in RNA but Not in DNA

question 48

Multiple Choice

Which base is present in RNA but not in DNA?

• A) uracil
• B) adenine
• C) thymine
• D) cytosine

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Definitions:

Ubiquitin

A small eukaryotic regulatory polypeptide that can be covalently bonded to proteins, targeting the protein for destruction and recycling. Also used to regulate protein activities.

Repressor Proteins

Proteins that bind to specific sequences of DNA to inhibit the transcription of genes, playing a critical role in gene regulation.

Transcription

The method through which the data contained in a DNA strand is replicated into a fresh molecule of messenger RNA (mRNA).

Auxin

A class of plant hormones that play crucial roles in the coordination of many growth and behavioral processes in the plant's life cycle.