Which cells provide SCN(Suprachiasmatic Nucleus) neurons with light information

Question

Which cells provide SCN(Suprachiasmatic Nucleus) neurons with light information to keep the internal clock in synchrony with the environment? Superior Cervical Ganglion cells Neurons in the Pineal gland Retinal Ganglion cells Neurons in the Hippocampus Transcriptional control of gene expression influence__________. splicing of introns and exons into mRNA mRNA transport from nucleus to cytosol which mRNA is made into protein by ribosomes which genes are turned into RNA If all external time cues are removed, what would happen to the circadian rhythms in a person? Circadian rhythms would stop would be broken up and occur in short intervals throughout day and night Circadian rhythms would continue The clock genes would not be transcribed in the SCN (Suprachiasmatic Nucleus)

Explanation / Answer

1) D 2) B 3) C

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