Carl Woese Proposed the Concept of the Domain Based on Differences

question 46

Multiple Choice

Carl Woese proposed the concept of the domain based on differences of which of the following cellular molecules?

• A) transfer RNA
• B) membrane lipids
• C) ribosomal RNA
• D) DNA
• E) proteins

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Definitions:

Uracil

A nitrogen-containing base (a pyrimidine) found in RNA, where it pairs with adenine and replaces thymine during DNA transcription.

Molecular Shape

The three-dimensional arrangement of atoms within a molecule, determined by various physical and chemical factors, impacting chemical reactivity and interactions.

Nitrogens

A rephrasing of "Nitrogens" would be: Chemical elements with the symbol N, essential for all living organisms as a constituent of proteins and nucleic acids.

HCN Bond Angle

The angle between the hydrogen, carbon, and nitrogen atoms in hydrogen cyanide, typically close to 180 degrees due to its linear molecular shape.