What Ability, Which Modern Eukaryotic Cells Also Possess, Did Cells

question 24

Multiple Choice

What ability, which modern eukaryotic cells also possess, did cells in an RNA world probably acquire that explains the existence of DNA?

• A) Reverse transcription
• B) DNA replication
• C) Translation
• D) RNA splicing

---

Definitions:

Synaptic Cleft

The small gap at a synapse between neurons, across which neurotransmitters move from one neuron to another.

Terminal Buttons

The small knobs at the end of an axon that release chemicals called neurotransmitters into the synapse, thereby transmitting nerve impulses to another nerve cell.

Cell Membrane

The thin, flexible barrier that surrounds cells, controlling the movement of substances in and out of the cell.

Action Potential

A short-lasting event in which the electrical membrane potential of a cell rapidly rises and falls, facilitating neural communication.