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The o2 produced as a byproduct of photosynthesis comes from
splitting water molecules
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during the light-dependent reactions of photo synth, the formation of NADH from NADP+ and a hydrogen ion occurs in association with
photosystem I
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Because the first detectable product of the Calvin cycle is ___, the cycle is also known as the ___ pathway.
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photorespiration is more likely to occur in C3 plants when ____
o2 is more abundant in intercellular spaces in leaf tissue than in CO2
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in the C4 pathway, the enzyme PEP carboxylase
- reacts CO2 w/ phosphoenolypyruvate
- produces oxaloacetate
- works more efficiently at temperatures above 30C
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In CAM plants, malate formed as the end product of CO2 fixation in the dark is stored as malice acid/malate in the ___ of mesophyll cells
vacuole
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Although the vasc cambium produces as many x cells as p cells / growing season, fewer p cells are apparent in woody stems b/c...
the oldest phloem cells are shed as bark
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trees growth rings are lines that appear in...
the xylem tissue, marking where the vasc camb stopped growing one year and started the next
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In mature trees, most of the cells in the interior of the trunk are ___
non functioning xylem cells
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what stimulates proper growth of fleshy receptacle that makes what we see as strawberry fruit?
ausin
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gibberellins are used in grapes for...
- keep grapes on vines until harvesters can pick
- increase size of clusters
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defoliants stimulate cotton plants to produce ___, a hormone associated w/ signaling plant to drop leaves.
ethylene
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what are man climatic factors affecting the distribution of biomes
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the temperate deciduous forest biome
has precipitation evenly distributed throughout the year
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