Thus Euglena shows a diurnal rhythm in the speed at which it moves to a light source.
当眼虫被放在强光下时，仍能表现出昼夜节律。
Diurnal rhythm
英语例句库
原声例句
彭博洞察
It likes distinct diurnal rhythms, so differentials between day and night.
它喜欢不同的昼夜节律，因此白天和黑夜之间存在差异。
中文百科
昼夜节律 Circadian rhythm
（重定向自Diurnal rhythm）
昼夜节律（英语：Circadian rhythm），又译日夜节律、概日节律、日变周期，一种生理现象，以内源性、持续的，呈现以约24小时为周期的变动。包括植物、动物、真菌等，都被观察到有类似生理变化。英语：Circadian，这个单字源自拉丁文拉丁语：circa，为大约、大概的意思，拉丁语：dian，是一天、一日之意。合起来，在字面上的意思，是大约一天。
昼夜节律，由日变时钟（Circadian clock）所驱动。
英语百科
Circadian rhythm 昼夜节律
（重定向自Diurnal rhythm）
![Some features of the human circadian (24-hour) biological clock](/Images/godic/202501/09/Biological_clock_human.svg3920.png")
![Illustration of the morning (yellow) and evening (gray) circadian clock loops in Arabidopsis, entrainable through light. Transcriptional regulation is shown through black lines and protein complexes are denoted by dashed black lines. Post-translational regulation is shown by dashed red lines. Light sensitive elements are denoted with lightning bolts and yellow circles.](/Images/godic/202501/09/TOC1_interactions3920.jpg")
![A variation of an eskinogram illustrating the influence of light and darkness on circadian rhythms and related physiology and behaviour through the suprachiasmatic nucleus in humans.](/Images/godic/202501/09/Circadian_rhythm_labeled3920.jpg")
![A short nap during the day does not affect circadian rhythms.](/Images/godic/202501/09/Day_Sleepers_crop3920.jpg")
A circadian rhythm /sɜːrˈkeɪdiən/ is any biological process that displays an endogenous, entrainable oscillation of about 24 hours. These 24-hour rhythms are driven by a circadian clock, and they have been widely observed in plants, animals, fungi, and cyanobacteria.
- formal source
- formal source of law
- Formal specification
- formal spectrum
- formal standards
- formal structure
- formal style
- formal style for standards
- formal style, regular style
- formal subject
- formal summons
- formal symbol
- Formal syntax
- Formal synthesis
- Formal system
- formal Taylor expansion
- formal tea
- formal team
- formal test
- formal testing
- Formal Theory
- formal theory of authority
- formal theory of measurement
- formal thinking
- Formal thought disorder