Which of the Following Is the Best Evidence for a Three-Domain

question 54

Multiple Choice

Which of the following is the best evidence for a three-domain system?

• A)Nucleotide sequences in ribosomal RNA vary between all three domains.
• B)There are three distinctly different sets of metabolic reactions.
• C)There are three distinctly different Gram reactions.
• D)Some bacteria live in extreme environments.
• E)There are three distinctly different types of nuclei.

Recognize the role of ions and electrolytes in biological systems.

Understand the basic structure and properties of molecules.

Comprehend the concept and types of intermolecular forces.

Identify substances that can conduct electricity in solution and their significance.

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