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Lecture 5

Light and Light Capture

QuestionAnswer
what is critical for photosynthesis to proceed? light
availability of light decreases exponentially with what? depth in the ocean
top layer of ocean water: photosynthesis and vision euphotic zone
middle layer of ocean water: vision only (not enough sunlight for photosynthesis) disphotic zone
no sunlight aphotic zone
what color light penetrates deep? blue
what color light is attenuated quickly? red
PAR photosynthetically available radioation
the process by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source is called? photosynthesis
the synthesis of organic materials from inorganic substances by photosynthesis or chemosynthesis is called? primary production
in photosynthesis: water and carbon dioxide produce... glucose and oxygen
where does photosynthetic reactions occur in photosynthetic cells? chloroplasts
light dependent reactions occur in the... thylakoid
light independent reactions occur in the... stroma
photosynthetic organisms use what to capture light of various colors? pigments
what type of chlorophyll is the main light harvesting pigment in most photosynthetic organisms (including all phytoplankton)? chlorophyll a
helping chlorophylls are a group of ____ pigments... accessory
what are a group of accessory pigments? carotenoids
each pigment contains a group of atoms that can absorb ____ of different energies, which correspond to different colors of light. photons
Created by: rachelaurenk
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