TRNAs Interact with the Ribosome Only After

question 64

Multiple Choice

tRNAs interact with the ribosome only after

• A) they bind the free mRNA.
• B) the small and large subunits have come together.
• C) the first peptide bond in the nascent chain is formed.
• D) the AUG start codon is positioned in the E site.

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Definitions:

Synaptic Vesicles

Membrane-bound sacs in neurons that store neurotransmitters which are released during synaptic transmission.

Synaptic Knob

The terminal button of a neuron that contains neurotransmitters and is involved in the transmission of signals to another neuron.

Receptor Sites

Three-dimensional proteins on the surface of the dendrites or certain cells of the muscles and glands, which are shaped to fit only certain neurotransmitters.

Resting Potential

The difference in electric charge between the inside and outside of a resting neuron's plasma membrane, critical for nerve impulse transmission.