Biology of the Papaya Plant
... Laticifers of papaya are complex tissue systems of the articulate-anastomosing type. In general, these conducts are multicellular columns with perforated transverse lateral walls, protoplast fusion, and intrusion of phloem cells, forming branched networks (Hagel et al. 2008). Damage to any aerial pa ...
... Laticifers of papaya are complex tissue systems of the articulate-anastomosing type. In general, these conducts are multicellular columns with perforated transverse lateral walls, protoplast fusion, and intrusion of phloem cells, forming branched networks (Hagel et al. 2008). Damage to any aerial pa ...
Effects of Tissue-type and Development on Dark Respiration in Two
... habitats. The purpose of this study was to describe the seasonal pattern of dark respiration in the above-ground tissues of two herbaceous perennials, Bistorta bistortoides (Pursh) Small and Campanula rotundifolia L., growing in the Rocky Mountains (USA). The eect of biomass accumulation on respira ...
... habitats. The purpose of this study was to describe the seasonal pattern of dark respiration in the above-ground tissues of two herbaceous perennials, Bistorta bistortoides (Pursh) Small and Campanula rotundifolia L., growing in the Rocky Mountains (USA). The eect of biomass accumulation on respira ...
Common Misconceptions/Alternative conceptions in Primary Science
... Misconception: The second bulb is less bright than the first bulb in a series circuit because electric current has been ‘used up’ by the first bulb in the circuit. Fact: Both bulbs are equally bright if they are identical. The current flowing through both bulbs is the same in a series circuit and de ...
... Misconception: The second bulb is less bright than the first bulb in a series circuit because electric current has been ‘used up’ by the first bulb in the circuit. Fact: Both bulbs are equally bright if they are identical. The current flowing through both bulbs is the same in a series circuit and de ...
21_22 Test
... Plants are multicellular eukaryotes that produce their own food in the form of glucose. Plants cells have a cell wall and the leaves and stems of plants have a cuticle. DIF: B OBJ: 21-1 STO: B.1.35 52. ANS: The evolution of vascular tissue enabled plants to survive in many more habitats. Vascular pl ...
... Plants are multicellular eukaryotes that produce their own food in the form of glucose. Plants cells have a cell wall and the leaves and stems of plants have a cuticle. DIF: B OBJ: 21-1 STO: B.1.35 52. ANS: The evolution of vascular tissue enabled plants to survive in many more habitats. Vascular pl ...
Common Misconceptions Adaptation: Misconception: Individuals
... Misconception: The second bulb is less bright than the first bulb in a series circuit because electric current has been ‘used up’ by the first bulb in the circuit. Fact: Both bulbs are equally bright if they are identical. The current flowing through both bulbs is the same in a series circuit and de ...
... Misconception: The second bulb is less bright than the first bulb in a series circuit because electric current has been ‘used up’ by the first bulb in the circuit. Fact: Both bulbs are equally bright if they are identical. The current flowing through both bulbs is the same in a series circuit and de ...
ADP
... in which ribose-5-phosphate and NADPH+H+ are yielded accompanying the degradation of glucose, and then ribose-5 phosphate can turn to glyceraldehyde -3- phosphate and fructose-6-phosphate further. nicotinamide adenine dinucleotide phosphate ( NADPH , reduced form) ...
... in which ribose-5-phosphate and NADPH+H+ are yielded accompanying the degradation of glucose, and then ribose-5 phosphate can turn to glyceraldehyde -3- phosphate and fructose-6-phosphate further. nicotinamide adenine dinucleotide phosphate ( NADPH , reduced form) ...
Evolutionary context for understanding and manipulating plant
... potentially achieve greater A by delivering more water to the leaf in order to sustain greater stomatal conductance. Therefore, increasing vein density has been proposed to have been a major fitness advantage for angiosperms and contributed to their subsequent radiation (figure 1a,b) [26,31–33]. The ...
... potentially achieve greater A by delivering more water to the leaf in order to sustain greater stomatal conductance. Therefore, increasing vein density has been proposed to have been a major fitness advantage for angiosperms and contributed to their subsequent radiation (figure 1a,b) [26,31–33]. The ...
Infrared Spectroscopy of Trapped Gases in Metal
... from the solvent via heating, and in principle the amines are regenerated (4). Amine-scrubbing is the best-understood CO2 -separation method and has been in practice for over 60 years (6). The process, however, uses significant amounts of energy to remove CO2 and regenerate the solvents. It is also ...
... from the solvent via heating, and in principle the amines are regenerated (4). Amine-scrubbing is the best-understood CO2 -separation method and has been in practice for over 60 years (6). The process, however, uses significant amounts of energy to remove CO2 and regenerate the solvents. It is also ...
Plant and Soil
... Many N2-fixing organisms can turn off nitrogenase activity in the presence of N H ] and turn it on again when the N H 4 is exhausted. One of the most interesting systems for accomplishing this is by covalent modification of one subunit of dinitrogenase reductase by dinitrogenase reductase ADP-ribosy ...
... Many N2-fixing organisms can turn off nitrogenase activity in the presence of N H ] and turn it on again when the N H 4 is exhausted. One of the most interesting systems for accomplishing this is by covalent modification of one subunit of dinitrogenase reductase by dinitrogenase reductase ADP-ribosy ...
Fungal denitrification and nitric oxide reductase cytochrome P450nor
... and nitrous oxide reductase (Nos), respectively. The reducing equivalents for these reactions are provided from the respiratory chain coupling to the synthesis of adenosine triphosphate (ATP), and thus bacterial denitrification functions as anaerobic respiration. ...
... and nitrous oxide reductase (Nos), respectively. The reducing equivalents for these reactions are provided from the respiratory chain coupling to the synthesis of adenosine triphosphate (ATP), and thus bacterial denitrification functions as anaerobic respiration. ...
A genomic view on syntrophic versus non-syntrophic
... syntrophic growth. One is putatively involved in capsule or biofilm production (IPR019079) and a second in cell division, shape-determination or sporulation (IPR018365). The sulfate-reducing bacteria Desulfobacterium autotrophicum HRM2, Desulfomonile tiedjei and Desulfosporosinus meridiei were never ...
... syntrophic growth. One is putatively involved in capsule or biofilm production (IPR019079) and a second in cell division, shape-determination or sporulation (IPR018365). The sulfate-reducing bacteria Desulfobacterium autotrophicum HRM2, Desulfomonile tiedjei and Desulfosporosinus meridiei were never ...
This paper is published in a part-themed issue of Photochemical
... removing air1 . Besides luciferin and luciferase, O2 is required for all bioluminescence to occur.7 While at Princeton Harvey accepted William McElroy as a PhD student and this would represent the start of a life-long study of firefly bioluminescence. McElroy’s research was seminal for a large number ...
... removing air1 . Besides luciferin and luciferase, O2 is required for all bioluminescence to occur.7 While at Princeton Harvey accepted William McElroy as a PhD student and this would represent the start of a life-long study of firefly bioluminescence. McElroy’s research was seminal for a large number ...
Metabolic Activity Decreases as an Adaptive Response to Low
... Plants lack specialised organs and circulatory systems, and oxygen can fall to low concentrations in metabolically active, dense or bulky tissues. In animals that tolerate hypoxia or anoxia, low oxygen triggers an adaptive inhibition of respiration and metabolic activity. Growing potato tubers were ...
... Plants lack specialised organs and circulatory systems, and oxygen can fall to low concentrations in metabolically active, dense or bulky tissues. In animals that tolerate hypoxia or anoxia, low oxygen triggers an adaptive inhibition of respiration and metabolic activity. Growing potato tubers were ...
Proton transfer pathways and mechanism in bacterial reaction centers Minireview
... forms of the rescuing acid, respectively; A3 is the intermediate proton acceptor group; Glu is the ¢nal proton acceptor Glu-L212 (Eq. 2); kON and kOFF are the on and o¡ rate constants of the acid molecule; kOFF P is the o¡ rate of the unprotonated acid molecule; k1 and k31 are the forward and revers ...
... forms of the rescuing acid, respectively; A3 is the intermediate proton acceptor group; Glu is the ¢nal proton acceptor Glu-L212 (Eq. 2); kON and kOFF are the on and o¡ rate constants of the acid molecule; kOFF P is the o¡ rate of the unprotonated acid molecule; k1 and k31 are the forward and revers ...
Andreas PM Weber – Curriculum Vitae
... National Science Foundation (NSF) ”Functional and evolutionary analysis of chloroplast metabolite transporters in the C4 plant maize”. (2006-2009; $450,000). National Science Foundation (NSF) “Understanding protein networks in plant peroxisomes”. ...
... National Science Foundation (NSF) ”Functional and evolutionary analysis of chloroplast metabolite transporters in the C4 plant maize”. (2006-2009; $450,000). National Science Foundation (NSF) “Understanding protein networks in plant peroxisomes”. ...
PC 267 Final report 2007
... later relative to the supplementary lighting treatment. Growth regulation with CCC 720 - 0 = no reaction, + = low to moderate inhibition effect, ++ = strong inhibition effect, nt = not tested ...
... later relative to the supplementary lighting treatment. Growth regulation with CCC 720 - 0 = no reaction, + = low to moderate inhibition effect, ++ = strong inhibition effect, nt = not tested ...
AdvLec10_WebCT
... ATP used up to ph’late fructose cellular energy is reduced phosphate ‘trapped’ in fructose 1 P all of the above ...
... ATP used up to ph’late fructose cellular energy is reduced phosphate ‘trapped’ in fructose 1 P all of the above ...
Boundless Study Slides
... • Krebs cycle a series of enzymatic reactions that occurs in all aerobic organisms; it involves the oxidative metabolism of acetyl units and serves as the main source of cellular energy • Krebs cycle a series of enzymatic reactions that occurs in all aerobic organisms; it involves the oxidative meta ...
... • Krebs cycle a series of enzymatic reactions that occurs in all aerobic organisms; it involves the oxidative metabolism of acetyl units and serves as the main source of cellular energy • Krebs cycle a series of enzymatic reactions that occurs in all aerobic organisms; it involves the oxidative meta ...
Glycine Cleavage Powers Photoheterotrophic Growth of
... performs a cyclic photosynthetic electron transport via a type II reaction center (Tang and Blankenship, 2013). Its photosystem does not generate NADPH directly, but can convert light energy into ATP via photosynthetic electron transfer. The genome of C. aurantiacus strain J-10-fl has been sequenced ...
... performs a cyclic photosynthetic electron transport via a type II reaction center (Tang and Blankenship, 2013). Its photosystem does not generate NADPH directly, but can convert light energy into ATP via photosynthetic electron transfer. The genome of C. aurantiacus strain J-10-fl has been sequenced ...
The N-end rule pathway controls multiple functions during
... Contributed by Elliot M. Meyerowitz, June 11, 2009 (sent for review May 25, 2009) ...
... Contributed by Elliot M. Meyerowitz, June 11, 2009 (sent for review May 25, 2009) ...
Photosynthesis
Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the Sun, into chemical energy that can be later released to fuel the organisms' activities. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water – hence the name photosynthesis, from the Greek φῶς, phōs, ""light"", and σύνθεσις, synthesis, ""putting together"". In most cases, oxygen is also released as a waste product. Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis maintains atmospheric oxygen levels and supplies all of the organic compounds and most of the energy necessary for life on Earth.Although photosynthesis is performed differently by different species, the process always begins when energy from light is absorbed by proteins called reaction centres that contain green chlorophyll pigments. In plants, these proteins are held inside organelles called chloroplasts, which are most abundant in leaf cells, while in bacteria they are embedded in the plasma membrane. In these light-dependent reactions, some energy is used to strip electrons from suitable substances, such as water, producing oxygen gas. Furthermore, two further compounds are generated: reduced nicotinamide adenine dinucleotide phosphate (NADPH) and adenosine triphosphate (ATP), the ""energy currency"" of cells.In plants, algae and cyanobacteria, sugars are produced by a subsequent sequence of light-independent reactions called the Calvin cycle, but some bacteria use different mechanisms, such as the reverse Krebs cycle. In the Calvin cycle, atmospheric carbon dioxide is incorporated into already existing organic carbon compounds, such as ribulose bisphosphate (RuBP). Using the ATP and NADPH produced by the light-dependent reactions, the resulting compounds are then reduced and removed to form further carbohydrates, such as glucose.The first photosynthetic organisms probably evolved early in the evolutionary history of life and most likely used reducing agents, such as hydrogen or hydrogen sulfide, as sources of electrons, rather than water. Cyanobacteria appeared later; the excess oxygen they produced contributed to the oxygen catastrophe, which rendered the evolution of complex life possible. Today, the average rate of energy capture by photosynthesis globally is approximately 130 terawatts, which is about three times the current power consumption of human civilization.Photosynthetic organisms also convert around 100–115 thousand million metric tonnes of carbon into biomass per year.