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[DOC File]Grapevine Anatomy and Physiology - Elsevier
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: (Greek ‘auxanomai’ = to grow) Plant →hormone that mainly stimulates the pattern of cell division and differentiation (‘growth hormone’), and controls organ formation and →apical dominance. Very generally, auxin is transported to tissues to induce them to grow. The major auxin is indole-3-acetic acid (IAA), a carboxylic acid produced both from the →amino acid tryptophan and from ...
best wavelengths for photosynthesis

[DOC File]Laboratory 1 - University of Wisconsin–Stevens Point
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Both groups of pigments are water-soluble and function as accessory pigments in photosynthesis. Accessory pigments absorb light at different wavelengths than chlorophyll and transfer the energy to chlorophyll a for use in photosynthesis. The food storage product of blue green algae, cyanophycean starch, is chemically similar to the glycogen produced by animals. A gelantinized sheath usually ...
how does light affect photosynthesis

[DOCX File]Dirty Business - American Chemical Society
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The more sunlight a plant receives, the more photosynthesis occurs and the more food the plant produces. The quality of light is another characteristic. This refers to the color or the wavelength reaching the plant surface. Red and blue light increase plant growth the most. Green light is mostly reflected, which is why plants look green, so it has little effect on plant growth. The third ...
photosynthesis spectrum

[DOC File]CHAPTER 39
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These proteins include enzymes that function in photosynthesis directly or that supply the chemical precursors for chlorophyll production. Other proteins affect the levels of plant hormones that regulate growth. For example, the levels of two hormones (auxins and brassinosteroids) that enhance stem elongation decrease following phytochrome activation—hence, the reduction in stem elongation ...
photosynthesis light spectrum

[DOC File]ChemMatters Teacher's Guide - American Chemical …
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The greenhouse effect can be summarized this way: energy from the sun reaches the Earth’s surface mostly in the form of visible and ultraviolet radiation. The Earth absorbs that radiation and re-radiates it into the atmosphere in the form of infrared radiation (heat). Although oxygen and nitrogen, the primary constituent gases in the atmosphere, do not absorb this heat, other gases like ...
light and photosynthesis

[DOC File]CHAPTER 1: Concepts and Methods in Biology
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Organisms use only a small range of wavelengths for photosynthesis, vision, and other processes. 2. Most of these wavelengths are the ones we see as visible colors. 3. Light energy is packaged as photons, which vary in energy as a function of wavelength. B. The Rainbow Catchers. 1. Pigment molecules on the thylakoid membranes absorb photons. 2. Chlorophyll pigments absorb blue and red …
photosynthesis and wavelengths of light

[DOC File]Chapter 1
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Photosynthesis is an important chemical reaction. Humans and other animals ultimately depend on photosynthesis for food and oxygen. Green plants combine carbon dioxide (CO2) from the air and water (H2O) from the soil to create sugar molecules and release molecular oxygen (O2) as a by-product. This chemical reaction is powered by sunlight.
best wavelengths for photosynthesis

[DOC File]Chapter 8
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Areas receiving wavelengths favorable to photosynthesis produced excess O2. Engelmann used the abundance of aerobic bacteria that clustered along the alga at different segments as a measure of O2 production. The action spectrum of photosynthesis does not match exactly the absorption spectrum of any one photosynthetic pigment, including chlorophyll a. Only chlorophyll a participates directly in ...
how does light affect photosynthesis

[DOC File]Topic 1: Statistical analysis (2 hours)
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3.8.2 State that light from the Sun is composed of a range of wavelengths (colours). Explain the relationship between the absorption spectrum and the action spectrum of photosynthetic pigments. (3) pigments absorb light as a source of energy for photosynthesis; absorption spectrum indicates wavelengths / frequency of light absorbed by each pigment; action spectrum indicates rate of ...
photosynthesis spectrum

[DOCX File]Super important player: Oxygen - Georgetown ISD
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Where – Takes place in the chloroplast. Mostly in leaf cells, mostly in the mesophyll (middle layer of leaf) -----Carbon dioxide comes in and Oxygen goes out through the stoma. (stomata = plural) Water is absorbed from the roots. Photosynthesis is has 2 parts. The . light reactions. convert solar energy to chemical energy. The . Calvin cycle. takes CO. 2. from the atmosphere incorporates it ...
photosynthesis light spectrum

Wavelengths that mostly stimulates photosynthesis