Suns Reactions 

- Gravity of sun pulls hydrogen gases together 

W/ increased pressure, heat, and density, hydrogen atoms fuse together 

Nuclear Fusion 

Hydrogen produces helium and particles, and energy

 energy emitted as: electromagnetic radiation

                          transmitted invarious wavelengths 

What energy released by the sun do plants use for photosynthesis? 

Visible light 

What chemical is responsible for capturing light energy?

Chlorophyll 

How did scientists determine what wavelengths of lights are used in photosynthesis? 

determined color of plant leaf

abosrbed by plant 

What wavelengths of light are used in photosynthesis? 

red and blue 

How many membranes are present in chloroplast?

What are they? 

3

inner and outer membrane, and thylakoid membrane 

Why additional membranes? 

chloroplast is living organism

inner membrane is of the chloroplast

outer membrane is of the host 

photosynthesis 

plants use photosynthesis to convert solar energy into energy rich biochemical compounds 

Energy Transduction reactions

step 1 

light or photochemical reactions

light energy ---> chemical energy

visible spectrum ---> ATP, NADPH 

Carbon-fixation reactions

Step 2 

 dark or biochemical reactions

carbon dioxide ----> glucose

 CO2 -----> C6H12O6

simple compound --> complex O. comp.