Welcome!
Sharpen your biology skills with practice questions covering a wide range of topics.
Each day, a new question is randomly selected for the home page. Check back tomorrow for a new challenge, or explore more questions after you answer this one!
Today's question of the day:
Which one of the following substances converts light into electrons during photosynthesis?
Chlorophyll absorbs energy from light to excite it from a lower to a higher energy state, resulting in the production of an electron