The photosystem channels the excitation energy gathered by absorption of light by any one of the pigment molecules to a specific reaction center chlorophyll, which in turn passes the energy to:

Why is the simultaneous detection of methane and oxygen in an atmosphere a good indication of the existence of a biosphere on that planet?

Which of the following is an example of homeostasis? A. Humans wear hats in the sun. B. Humans like to play sports. C. Humans sweat when they are hot. D. Humans cover their ears when there is a loud noise.

How does a sulfur plant work

An astronaut has become detached from her spaceship. She's floating in space holding a wrench. She's 50 m from her current location. How does she get back to the spaceship?

What is the average velocity of a car that traveled 300 miles north in 5.5 hours

Why is the statement "we evoleved from monkeys" false?

A group of lions is chasing a zebra. The lions are most likely responding to which kind of stimulus

A ray diagram is shown What does e, represent? index of refraction index of reflection angle of incidence angle of refraction Mark this and retum Submit Save and Exit

Which renewable resource could become a nonrenewable resource if used faster than Earth's ability to replenish its supply? A. water B. manganese C. sunlight D. wind

Which rule for assigning oxidation numbers is correct Hydrogen is usually - 1. Oxygen is usually - 2. Apure group 1 element is + 1. Amonatomic ion is 0.