Which of the following directly contributes to the refractory period in a neuron?

Which of the following activities is not associated with post-translational processing of proteins?

The four promoters above are identified as A-D. Match each promoter with the correct RNA polymerase.

Eukaryotic mRNAs are monocistronic.

The 5′ UTR on an mRNA is defined by the position of the stop codon.

Diffusion of molecules is not used at all in signaling via action potentials.

While characterizing the activities of several neurons, you find a neuron with the following properties: (1) When stimulated, the neuron fails to release neurotransmitters into the synaptic cleft. (2) Microinjection of calcium ions has no effect on the neuron The abnormality in this neuron is most likely associated with the function of

Compounds that activate receptors by mimicking the natural messenger are known as

Use this graph to answer the following matching questions.

Z-form DNA is a left-handed helix.