6.1 Chloroplasts and Photosynthetic Pigments Photosynthesis Dependent on LIGHT Photosynthesis: process that converts _______________________ from the Sun into _____________________ energy to be used by living cells. Light: type of ______________ occurring in individual packets of energy called _____________ Photons: corresponds to particular _________________________ - short wavelengths = _____________ energy - long wavelengths = _____________ energy Light a mixture of wavelengths (ie. Separate through prisms) Photosynthesis & Cellular Respiration Plants only living organisms capable of producing own food (____________________). Photosynthetic organisms capture energy and _____________ it in bonds of ___________________ - energy passed on to other organisms in _______________________ ALL organisms release energy stored in glucose by __________________ ________________________. - _______________ cellular activities Carbon dioxide + water + energy glucose + oxygen Pigments Special ___________________ in photosynthetic organisms capture ___________________ from solar energy - begin reactions of ______________________ ________________________: absorbs photons from solar energy - types of chlorophyll: - chlorophyll a ___________________ light-absorbing pigment _______________________ pigments: absorb photons ______________________ - chlorophyll _____: absorbs photons chlorophyll a does _________ or does ________________ - __________________________: transfer energy absorbed into a molecule of chlorophyll ______ Chlorophyll Both a & b absorb photons with energies in ____________________________ and _______________ regions Reflect (transmit) those with wavelengths of ________ nm to ___________ nm. - we see this as ____________________ light Chlorophyll a only pigment that can __________________ energy from ________________________ to the reactions of _________________________. Chloroplasts Photosynthesis occurs in the ___________________ - must contain ___________________________ - must obtain ___________ and ____________ - must capture ____________________ energy chlorophyll found in _________________________ of _____________________________ - chloroplasts located in ___________________ and ____________________ Chloroplasts Approximately 3 8 m in length, 2 3 m in diameter Enclosed by inner and outer _______________________ Stroma: ___________________________: connected and stacked sacs within stroma Grana: Lamellae: ___________________ thylakoids that connect ____________________ Thylakoid membrane: where ______________________ occurs - contains _________________________ and __________________ transport chains Structure of thylakoid system: - increases ___________________________ of thylakoid membrane - increases ______________________ of photosynthesis