Biology Chapter 7 [[Photosynthesis]]
Terms
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- autotrophs
- photosynthetic organisms producing their own food.
- heterotrophs
- consumer organisms that hunt for their own food
- chloroplast
- the organelles that carry on photosynthesis
- stroma
- the fluid filled interior of a chloroplast
- paper chromatography
- the seperation and migration of pigments
- short vs. long wavelength
- short wavelengths are more deadly and a less likely to pass through the biosphere
- granum, grana
- a stack of chlorophyll-containing thylakoids in a chloroplast.
- chlorophyll
- green pigment that absorbs solar energy and is important in algal and plant photosynthesis.
- visisble light
- portion of the electromagnetic spectrum that is visible to the human eye.
- carotene
- yellow or orange pigment that serves as an accessory to chlorophyll.
- light reactions
- portion of photosynthesis that captures solar energy and takes place in thylakoid membranes of chloroplasts; it produces ATP and NADPH
- Calvin cycle reactions
- portion of photosynthesis that takes place in the stroma of chloroplasts and can occur in the darkl it uses the products of the light reactions to reduce C02 to a carbohydrate
- electron transport chain
- passage of electrons along a series of membrane bound electron carrier molecules from a higher to lower energy level; the energy released is used for the synthesis of ATP
- Types of Pigments
- Chlorophyll a- absorbs red and blue light Chlorophyll b- absorbs red and blue light Carotene- absorbs light besides red and orange
- NADP+
- NADP+ transforms into NADPH when it comes into contact with the electron transport train. Obtains to high- energy electrons
- NADPH
- The reduced form of nicotinamide adenine dinucleotide phosphate that serves as an electron carrier.
- thylakoid /grana
- thylakoid is a sac-like membrane that house light dependent reactions and the Calvin Cycle. Stack of thylakoids are grana
- Factors that affect photosynthesis
- Temperature, light, water availability