Multiple Choice
What does light absorption trigger during phototaxis?
A) rapid changes in the concentrations of ions, including potassium and oxygen
B) rapid changes in the concentrations of ions, including sodium and oxygen
C) rapid changes in the concentrations of ions, including sodium and calcium
D) rapid changes in the concentrations of ions, including potassium and calcium
Correct Answer:

Verified
Correct Answer:
Verified
Q19: When light hits a pigment, what happens
Q20: Absorption of a photon of light causes
Q21: Which natural phenomenon is the most fundamental?<br>A)
Q22: Explain how organisms use light to tell
Q23: A brightly coloured penguin is less healthy.
Q25: The plant photoreceptor phytochrome is important for
Q26: Where are ocelli single-lens eyes found?<br>A) only
Q27: What controls circadian rhythms, and which environment
Q28: What is a conjugated system?<br>A) a pigment
Q29: Which colour are hummingbirds attracted to?<br>A) yellow<br>B)