HRS - Ask. Learn. Share Knowledge. Logo

In Biology / College | 2025-07-06

Bright light affects our feelings of sleepiness by increasing or decreasing the production of a hormone called:
A. melatonin
B. dopamine
C. adrenaline
D. estrogen

Asked by lcardoza1513

Answer (1)

Bright light decreases melatonin production, which affects our sleepiness. Melatonin is produced in higher amounts in darkness, signaling the body to prepare for sleep. Thus, light exposure directly influences our sleep-wake cycle. ;

Answered by GinnyAnswer | 2025-07-06

Related Questions in Biology

[Done] A population of cheetahs has a birth rate of 5 and a death rate of 15. Immigration is 2, and emigration is 4. What is its population growth?

[Done] What term describes changes in a population's size over time? A. Carrying capacity B. Population dynamics C. Biomass D. Climate zone

[Done] Which of the following nutrient groups would NOT have some molecules included in the essential nutrients category? A. carbohydrates B. amino acids C. fatty acids D. vitamins E. minerals

[Done] What can happen in the absence of cell inhibitors? Check all that apply. A. Cells will keep growing and dividing uncontrollably. B. Proteins will be activated. C. There will be an imbalance between cells and resources. D. Cell growth and division will stop. E. Serious medical problems can occur.

[Done] Joints are areas where bone(s) come(s) together. Select one: A. one B. two C. three D. four