What Fraction of Radioactive Atoms Remains in a Sample After

question 73

Multiple Choice

What fraction of radioactive atoms remains in a sample after six half-lives

• A) zero
• B) 1/6
• C) 1/16
• D) 1/32
• E) 1/64

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Definitions:

Postsynaptic Membrane

A specialized area of a neuron's cell membrane that receives neurotransmitters from another neuron at a synapse.

Electrical Synapses

Rapid, bidirectional connections between neurons mediated through gap junctions, allowing direct transmission of electrical signals.

Ion Channels

Proteins that form pores in cell membranes, allowing the selective passage of ions across the membrane and influencing the cell's electrical charge and signaling.