If the Hypothesis Stating Viruses Evolved Prior to Living Organisms

question 45

Multiple Choice

If the hypothesis stating viruses evolved prior to living organisms on Earth is TRUE, the first type of viruses in the world were likely

• A) bacteriophages.
• B) DNA viruses.
• C) retroviruses.
• D) RNA viruses.

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Definitions:

NADH

Nicotinamide adenine dinucleotide (reduced form), a coenzyme found in all living cells that plays a critical role in energy production through oxidation-reduction reactions.

Fermentation

Anaerobic breakdown of glucose that results in a gain of two ATP and end products such as alcohol and lactate; occurs in the cytoplasm of cells.

Muscles

Tissues in the body that can contract, enabling movement and force generation.

Oxygen

A chemical element (O) essential for most life forms on Earth; it participates in respiration and forms part of water molecules.