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navik [9.2K]
3 years ago
6

Circadian rhythm refers to

Biology
1 answer:
strojnjashka [21]3 years ago
5 0

Answer:

The correct option is B) a pattern of biological functioning that occurs on a 24-hour cycle.

Explanation:

Biological rhythm is defined as the regular variation of an organic function related to the course of time, circadian biological phenomena (around the day), are those with a period of approximately 24 hours.

Circadian rhythms are physical, mental and behavioral changes that follow a daily cycle (the biological rhythm), and that respond primarily to light and darkness in an organism's environment. This cycle close to 24 hours, allows to recognize the sleep-wake phenomena and their homeostatic action, in the systemic processes of every living being. The circadian system is composed of photoreceptors, pacemakers and efferent pathways that allow a regular functioning of the sleep and wakeful state.

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Answer:

The left side of the heart receives oxygenated blood from the pulmonary vein and pumps it into the aorta, while the right side of the heart receives deoxygenated blood from the vena cava and pumps it into the pulmonary vein. The pulmonary vein and aorta also have valves connecting them to their respective ventricle.

Explanation:

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In fermentation _____ is reduced and _____ is oxidized. In fermentation _____ is reduced and _____ is oxidized. pyruvate ... NAD
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Explanation:

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To know more about photosystem I, here

brainly.com/question/14427520

#SPJ4

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