The of photosynthesis uses the energy of light to energize electron energy carrier molecules.

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

What factors contribute to the effect an environmental toxin has on the human body?

Which of these internal feedback reactions does not need your brain? oa. your leg jumping when it is hit by a reflex hammer b. your deeper breathing when you need more oxygen c. your body temperature rising when you have an infection d. your heart beating faster when you are in danger