Across
- 2. the second of the two major stages in photosynthesis
- 4. an organelle found in plants and photosynthetic protists that absorbs sunlight and uses it to drive the synthesis of organic compounds from carbon dioxide and water
- 6. that portion of the electromagnetic spectrum that can be detected as various colors by the human eye
- 8. an organism that obtains organic food molecules by eating other organisms or substances derived from them
- 11. in the thylakoid membrane of a chloroplast or in the membrane of some prokaryotes, a specialized molecule that shares the reaction-center complex with a pair of chlorophyll a molecules and that accepts an electron from them
- 15. the conversion of light energy to chemical energy that is stored in sugars or other organic compounds
- 17. an organism that obtains organic food molecules without eating other organisms or substances derived from other organisms
- 18. a route of electron flow during the light reactions of photosynthesis that involves both photosystems and produces ATP, NADPH, and O2
Down
- 1. a light-capturing unit located in the thylakoid membrane of the chloroplast or in the membrane of some prokaryotes
- 3. a route of electron flow during the light reactions of photosynthesis that involves only one photosystem and that produces ATP but no NADPH or O2
- 5. the first of two major stages in photosynthesis
- 7. a metabolic pathway that consumes oxygen and ATP, releases carbon dioxide, and decreases photosynthetic output
- 9. a three-carbon carbohydrate that is the direct product of the Calvin cycle
- 10. the distance between crests of waves
- 12. a quantum, or discrete quantity, of light energy that behaves as if it were a particle
- 13. the dense fluid within the chloroplast surrounding the thylakoid membrane and containing ribosomes and DNA
- 14. a green pigment located in membranes within the chloroplasts of plants and algae and in the membranes of certain prokaryotes
- 16. the reduced form of nicotinamide adenine dinucleotide phosphate