Circadian rhythms ...

Question

Accepted Answer

are influenced by the light/dark cycle

Accepted Answer

are cell-autonomous mechanisms based on transcriptional feed-back loops

Accepted Answer

are accelerated or slowed down by post-translational modifications of the involved proteins

Accepted Answer

can be influenced by hormonal and environmental factors

Answer

may be influenced by the availability of glucose and other substrates but are insensitive to AMP kinase activation

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may affect hormonal levels but not cellular responses to hormones

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are determined by the light/dark cycle

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are based on the regulation of CLOCK and Bmal-1 genes by melatonin

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