photosynthesis 2- chlorophyll

What is the role of photons in electron behavior?

Photons can strike and transfer energy into valence shell electrons, exciting them to higher energy levels.

What happens when an electron is excited by a photon?

The electron jumps up to higher energy level orbitals.

What are electron carriers?

Molecules that capture excited electrons, leaving behind an ionized molecule, such as H+.

What type of pigment is chlorophyll?

A light-absorbing pigment contained in photosystem proteins that absorbs all wavelengths of light except green.

Why do most plants appear green?

Because chlorophyll reflects green light, which is why it is visible to our eyes.

What is contained in the thylakoid membrane?

Photosystem proteins and ATP Synthase.

What are the components labeled in the thylakoid membrane diagram?

A = Stroma, B = Thylakoid Membrane, C = Lumen (inside of thylakoid).

Do electron transfer processes only occur in hydrogen atoms?

No, the processes work for all molecules, not just hydrogen atoms.

What do chlorophyll molecules do with light?

They absorb light, excluding green wavelengths, and enable photosynthesis.

What happens to other types of light absorbing pigments?

Each absorbs and reflects different colors of light.