| A | B |
|---|
| energy | the ability to do work |
| Light, heat, and electricity are all forms of __________. | energy |
| work | the ability to change or move matter against other forces |
| examples of cell work are _____ | growth, repair, active transport, reproduction |
| energy for cell work comes from __________ | food |
| autotroph | a "self feeding" organism |
| autotrophs are also known as _________ | producers |
| examples of autotrophs are ________ | plants, algae, adn some prokaryotes |
| photosynthesis | the process by which autotrophs convert sunlight to a usable form of energy |
| Where does photosynthesis take place? | in the chloroplast |
| Light is __________. | made up of particles called photons that move in waves. |
| pigment | a molecule that absorbs certain wavelengths of light and reflects or transmits others-what plants use to gather the sun's energy |
| Many plants and algae appear green because of | chlorophylls a & b reflect and transmit green light |
