The pollen wall and tapetum are altered in the
... may be solid or contain internal foramina and comprises tectum (tegillum), columella (bacula), and foot layers. The intine, secreted by the microspore, is the innermost layer, is located between plasma membrane and the nexine (Heslop-Harrison, 1971), and contains cellulose, pectin, and various prote ...
... may be solid or contain internal foramina and comprises tectum (tegillum), columella (bacula), and foot layers. The intine, secreted by the microspore, is the innermost layer, is located between plasma membrane and the nexine (Heslop-Harrison, 1971), and contains cellulose, pectin, and various prote ...
Esau`s Plant Anatomy - Wiley Online Library
... No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the p ...
... No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the p ...
Malpighian tubules and formation of uric acid
... removal of protons from the epithelial cells, into the tubule lumen, is balanced by the inward movement of potassium ions, which move from the haemolymph, into the epithelial cells and then out into the tubule lumen also. The epithelial cells have microvilli projecting into the tubule lumen and are ...
... removal of protons from the epithelial cells, into the tubule lumen, is balanced by the inward movement of potassium ions, which move from the haemolymph, into the epithelial cells and then out into the tubule lumen also. The epithelial cells have microvilli projecting into the tubule lumen and are ...
Pulsatile Stretch Remodels Cell-to-Cell Communication in Cultured
... Thereafter, the culture medium was replaced with medium containing 5% FCS every 24 to 48 hours. Cultures were then subjected to controlled pulsatile linear stretch for test periods of 1, 3, or 6 hours. Each series of experiments was performed on 8 to 12 cultures derived from 1 cell suspension. In ea ...
... Thereafter, the culture medium was replaced with medium containing 5% FCS every 24 to 48 hours. Cultures were then subjected to controlled pulsatile linear stretch for test periods of 1, 3, or 6 hours. Each series of experiments was performed on 8 to 12 cultures derived from 1 cell suspension. In ea ...
Recent advances in technology for measuring and manipulating cell
... elsewhere in their primary sequence. Circularly permuted GFPs (cpGFPs) were made by screening libraries of random permutants [11••] and by design [13], which together have found 17 locations at which new termini could be created while retaining fluorescence. In almost all cases, cpGFPs are less stab ...
... elsewhere in their primary sequence. Circularly permuted GFPs (cpGFPs) were made by screening libraries of random permutants [11••] and by design [13], which together have found 17 locations at which new termini could be created while retaining fluorescence. In almost all cases, cpGFPs are less stab ...
Platelet Dense Granule Membranes Contain Both
... formation of platelet thrombi. These storage organelles (also called dense bodies or &granules) contain serotonin, adenine and guanine nucleotides, calcium, magnesium, and inorganic phosphate.’ The inherent density of the core in these granules in human platelets when viewed in thin section or by wh ...
... formation of platelet thrombi. These storage organelles (also called dense bodies or &granules) contain serotonin, adenine and guanine nucleotides, calcium, magnesium, and inorganic phosphate.’ The inherent density of the core in these granules in human platelets when viewed in thin section or by wh ...
Lens Major Intrinsic Protein (MIP)
... turbidity assay. The absorbance time course at 350 nm was monitored when PC-Mbs vesicles (-) and PC vesicles (A)were mixed with 25 pM PS vesicles. Vesicles were incubated in the same solution described for Figure 1. After 3 min of preincubation, 25 r M PS vesicles was added to the cuvette (arrow). e ...
... turbidity assay. The absorbance time course at 350 nm was monitored when PC-Mbs vesicles (-) and PC vesicles (A)were mixed with 25 pM PS vesicles. Vesicles were incubated in the same solution described for Figure 1. After 3 min of preincubation, 25 r M PS vesicles was added to the cuvette (arrow). e ...
The Neuronal Membrane at Rest
... hydrophobic and will tend to associate readily with lipid. Regions with exposed polar R groups will be hydrophilic and will tend to avoid a lipid environment. Therefore, it is not difficult to imagine classes of rod-shaped proteins with polar groups exposed at either end, but with only hydrophobic g ...
... hydrophobic and will tend to associate readily with lipid. Regions with exposed polar R groups will be hydrophilic and will tend to avoid a lipid environment. Therefore, it is not difficult to imagine classes of rod-shaped proteins with polar groups exposed at either end, but with only hydrophobic g ...
Visualizing microtubule dynamics and membrane - UvA-DARE
... EMM tomography revealed the existence of at least two different kinds of vesicles during celll plate formation which could suggest the involvement of multiple membrane sources andd trafficking pathways driving cell plate formation (Segui-Simarro et al., 2004). Inn addition to these observations, rec ...
... EMM tomography revealed the existence of at least two different kinds of vesicles during celll plate formation which could suggest the involvement of multiple membrane sources andd trafficking pathways driving cell plate formation (Segui-Simarro et al., 2004). Inn addition to these observations, rec ...
The Proteome of Native Adult Müller Glial Cells From Murine
... Animals—All experiments were done in accordance with the European Communities Council Directive 86/609/EEC, and were approved by the local authorities. Animals were maintained with free access to water and food in an air-conditioned room on a 12-hour light-dark cycle. Adult (2– 4 months old) C57Bl6/ ...
... Animals—All experiments were done in accordance with the European Communities Council Directive 86/609/EEC, and were approved by the local authorities. Animals were maintained with free access to water and food in an air-conditioned room on a 12-hour light-dark cycle. Adult (2– 4 months old) C57Bl6/ ...
Spectroscopy and atomic force microscopy of biomass
... respectively. A stiff probe (k= 42 N/m) was used for these images in order to avoid the damage on softer probes caused by the voids of the samples. These hollow regions enclosed by cell walls represent dead intracellular cleared region or vacuoles or intercellular spaces. The hollow dead xylem vesse ...
... respectively. A stiff probe (k= 42 N/m) was used for these images in order to avoid the damage on softer probes caused by the voids of the samples. These hollow regions enclosed by cell walls represent dead intracellular cleared region or vacuoles or intercellular spaces. The hollow dead xylem vesse ...
Phosphatases - Georgia Institute of Technology
... • adrenaline β-AR AC PKA – PKAPhK phosphorylaseglycogen breakdown into glucose • PhK--|GSsynthesis of glycogen from glucose ...
... • adrenaline β-AR AC PKA – PKAPhK phosphorylaseglycogen breakdown into glucose • PhK--|GSsynthesis of glycogen from glucose ...
YEAR 11 BIOLOGY - Matrix Education
... Dutrochet played an important role in developing cell theory as, unlike his predecessors and his contemporaries, he did not regard living matter as either a variant of froth or as a uniform and compact matter crisscrossed by various pipes and channels and holed with cavities, but rather as made up o ...
... Dutrochet played an important role in developing cell theory as, unlike his predecessors and his contemporaries, he did not regard living matter as either a variant of froth or as a uniform and compact matter crisscrossed by various pipes and channels and holed with cavities, but rather as made up o ...
Section 3 Cell Organelles and Features
... Copyright © by Holt, Rinehart and Winston. All rights reserved. ...
... Copyright © by Holt, Rinehart and Winston. All rights reserved. ...
Cell Structure/Function
... 6. Which statement BEST describes the cell membrane in a typical plant cell? The membrane Your Answer: Correct Answer: 7. Which organelles are most directly involved in transporting materials out of the cell? Your Answer: Correct Answer: ...
... 6. Which statement BEST describes the cell membrane in a typical plant cell? The membrane Your Answer: Correct Answer: 7. Which organelles are most directly involved in transporting materials out of the cell? Your Answer: Correct Answer: ...
resting potential and chloride channels
... The IPSP reversal potential is about –70 mV (because they’re chloride channels). In neurons where VR = ECl, therefore, opening chloride channels does not change the membrane potential. If Vm was below EIPSP, the IPSP would be depolarizing but still inhibitory (mechanisms 2 & 3 below). Mechanisms of ...
... The IPSP reversal potential is about –70 mV (because they’re chloride channels). In neurons where VR = ECl, therefore, opening chloride channels does not change the membrane potential. If Vm was below EIPSP, the IPSP would be depolarizing but still inhibitory (mechanisms 2 & 3 below). Mechanisms of ...
muscle tissue
... made up of long branched fiber (cells) – cardiomyocytes, − cardiomyocytes are cylindrical cells, branched on one or both ends (Y, X shaped cells), − Sarcoplasm: single nucleus in the center of cell, striated myofibrils, numerous mitochondria, − cells are attached to one another by end-to-end junctio ...
... made up of long branched fiber (cells) – cardiomyocytes, − cardiomyocytes are cylindrical cells, branched on one or both ends (Y, X shaped cells), − Sarcoplasm: single nucleus in the center of cell, striated myofibrils, numerous mitochondria, − cells are attached to one another by end-to-end junctio ...
Initiation of intracellular offspring in Epulopiscium
... Daughter cell formation in Epulopiscium may represent the next stage in the evolution of a novel form of cellular propagation. While each M. polyspora cell produces up to nine intracellular offspring in the form of dormant endospores, an Epulopiscium cell produces active, not quiescent, offspring (M ...
... Daughter cell formation in Epulopiscium may represent the next stage in the evolution of a novel form of cellular propagation. While each M. polyspora cell produces up to nine intracellular offspring in the form of dormant endospores, an Epulopiscium cell produces active, not quiescent, offspring (M ...
2.3 Carbon-Based Molecules
... • Carbohydrates can be broken down to provide energy for cells. • Some carbohydrates are part of cell structure. Polymer (starch) ...
... • Carbohydrates can be broken down to provide energy for cells. • Some carbohydrates are part of cell structure. Polymer (starch) ...
Bio 103 Lecture - Origin and Evolution of Micr
... • describe the structure (general) and function of a prokaryotic flagellum • describe the structure (general) and function of pili • describe the structure (general) and function of an endospore • describe the structure (general) and function of branching cell chains found in actinomycetes • what ro ...
... • describe the structure (general) and function of a prokaryotic flagellum • describe the structure (general) and function of pili • describe the structure (general) and function of an endospore • describe the structure (general) and function of branching cell chains found in actinomycetes • what ro ...
Possible new intranuclear symbionts of Paramecium caudatum
... from that of the uninfected Ma. As it was shown by in situ hybridization with group-specific oligonucleotides, both symbionts belong to a-Proteobacteria. All these properties are nearly the same as those described previously for Nonospora macronucleata (Fokin et al., 1987) and ms-2 (Görtz, 1980) Acc ...
... from that of the uninfected Ma. As it was shown by in situ hybridization with group-specific oligonucleotides, both symbionts belong to a-Proteobacteria. All these properties are nearly the same as those described previously for Nonospora macronucleata (Fokin et al., 1987) and ms-2 (Görtz, 1980) Acc ...
Cytokinesis in Scytosiphon zygotes - Journal of Cell Science
... centrosomes elongate to the mid-point between two daughter nuclei and apparently transport Golgi-derived vesicles to the future division plane (Nagasato and Motomura, 2002). The vesicles fuse with tubular cisternae that simultaneously appear there, and membranous flat sacs grow towards the plasma me ...
... centrosomes elongate to the mid-point between two daughter nuclei and apparently transport Golgi-derived vesicles to the future division plane (Nagasato and Motomura, 2002). The vesicles fuse with tubular cisternae that simultaneously appear there, and membranous flat sacs grow towards the plasma me ...