Female Gametophyte Development in Flowering Plants
... the megasporocyte is manifested by the polar distribution of organelles, the dynamic deposition of callose, and the microtubule cytoskeleton. So far, the role of this polarity on megaspore development is unknown. The disruption of this polarity in megasporocytes was observed in switch1 (swi1)/dyad o ...
... the megasporocyte is manifested by the polar distribution of organelles, the dynamic deposition of callose, and the microtubule cytoskeleton. So far, the role of this polarity on megaspore development is unknown. The disruption of this polarity in megasporocytes was observed in switch1 (swi1)/dyad o ...
Cell Structure and Function
... different pH solutions. One is very acidic and one is very basic. What would happen if you took the biological membrane out of one beaker and put it directly into the other beaker? Your group can’t go to the lab until each member has finished your warmup… get to work, you MUST finish ...
... different pH solutions. One is very acidic and one is very basic. What would happen if you took the biological membrane out of one beaker and put it directly into the other beaker? Your group can’t go to the lab until each member has finished your warmup… get to work, you MUST finish ...
Differences in Whole-Cell and Single
... channels mediate a net outward K⫹ current, they can also allow a significant Zn2⫹ permeation (i.e. influx). In addition, single-channel recordings allowed us to identify an infrequent type of plasma membrane divalent cation channel that also can mediate Zn2⫹ influx. We propose that the different K⫹ ...
... channels mediate a net outward K⫹ current, they can also allow a significant Zn2⫹ permeation (i.e. influx). In addition, single-channel recordings allowed us to identify an infrequent type of plasma membrane divalent cation channel that also can mediate Zn2⫹ influx. We propose that the different K⫹ ...
Role of Cytoskeleton Changes and Expression
... TPA, it is not clear which of the TPA-mediated effects are essential to promote the latent, initiated cells. To examine possible interactions between a tumor promoter, phenotypic modulation, and oncogene expression during pro motion, we used cloned cells from the JB6 mouse epidermisderived cell line ...
... TPA, it is not clear which of the TPA-mediated effects are essential to promote the latent, initiated cells. To examine possible interactions between a tumor promoter, phenotypic modulation, and oncogene expression during pro motion, we used cloned cells from the JB6 mouse epidermisderived cell line ...
Archives of Microbiology
... 4C), and the radioactivity of the pellets was measured in a gamma counter. The amount of 125I-labeled protein bound to the bacteria was expressed as a percentage of the added radiolabeled protein. Cell-surface charge and hydrophobicity Cell-surface charge and hydrophobicity of bacterial cells stored ...
... 4C), and the radioactivity of the pellets was measured in a gamma counter. The amount of 125I-labeled protein bound to the bacteria was expressed as a percentage of the added radiolabeled protein. Cell-surface charge and hydrophobicity Cell-surface charge and hydrophobicity of bacterial cells stored ...
Phloem loading and unloading - HAL
... plasmodesmata!. First, in some species, electron microscopy shows more or less numerous ptasmodesmata connecting the conducting complex with the surrounding cells (Van Bel, 1987). In addition, several authors have reported on particular cells (paraveinal mesophyll), which seem to be located in a str ...
... plasmodesmata!. First, in some species, electron microscopy shows more or less numerous ptasmodesmata connecting the conducting complex with the surrounding cells (Van Bel, 1987). In addition, several authors have reported on particular cells (paraveinal mesophyll), which seem to be located in a str ...
Lesson Prepared Under MHRD project “National Mission on
... Cell is the smallest functional unit of life. In complex multicellular organisms, cells similar in structure and function are grouped together to form tissues. These tissues perform various functions of organs necessary for maintaining biological life. Thus, the plant body has a hierarchy of organs, ...
... Cell is the smallest functional unit of life. In complex multicellular organisms, cells similar in structure and function are grouped together to form tissues. These tissues perform various functions of organs necessary for maintaining biological life. Thus, the plant body has a hierarchy of organs, ...
Roots/Stems/Leaves Notes PowerPoint
... Types of Roots In some plants, the primary root grows long and thick and is called a taproot. Fibrous roots branch to such an extent that no single root grows larger than the rest. ...
... Types of Roots In some plants, the primary root grows long and thick and is called a taproot. Fibrous roots branch to such an extent that no single root grows larger than the rest. ...
DISTRIBUTION OF PEROXISOMES - The Journal of Cell Biology
... which are not apical vacuoles or mitochondria are either lysosomes or peroxisomes (Figs . 11 and 12) . The lysosomes in P I and P 2 cells are large and show a somewhat more apical distribution than do the peroxisomes (Fig . 11) . Lysosomes of P 3 cells are much smaller than the peroxisomes, fewer in ...
... which are not apical vacuoles or mitochondria are either lysosomes or peroxisomes (Figs . 11 and 12) . The lysosomes in P I and P 2 cells are large and show a somewhat more apical distribution than do the peroxisomes (Fig . 11) . Lysosomes of P 3 cells are much smaller than the peroxisomes, fewer in ...
Potassium regulation
... cell causing hyperkalemia • For each 10 mOsm increase in osmalrity, this will make 0.4-0.8 mEqv increase in potassium extracellular concentration • Remember that the normal osmolarity in the plasma is 284mOsm • -Epinephrine pushes potassium inside the cells, so giving beta blocker as propranolol wil ...
... cell causing hyperkalemia • For each 10 mOsm increase in osmalrity, this will make 0.4-0.8 mEqv increase in potassium extracellular concentration • Remember that the normal osmolarity in the plasma is 284mOsm • -Epinephrine pushes potassium inside the cells, so giving beta blocker as propranolol wil ...
Report into the death of Prisoner D 2016
... mental health perspective and was doing well. It was reported that the deceased was symptom free and managing well and could now be managed through the GP system. The group assessed his suitability for the Community Return Scheme and the Probation Service was looking into accommodation for him. His ...
... mental health perspective and was doing well. It was reported that the deceased was symptom free and managing well and could now be managed through the GP system. The group assessed his suitability for the Community Return Scheme and the Probation Service was looking into accommodation for him. His ...
Mitochondrion and Chloroplast Regulation of Plant Programmed
... programme through the release of pro-apoptotic molecules during the effector phase, where the cell commits irrevocably to death [28]. The release of these proapoptotic molecules or mitochondrial factors is of critical importance to the progression of apoptosis. However, the mechanism by which the pr ...
... programme through the release of pro-apoptotic molecules during the effector phase, where the cell commits irrevocably to death [28]. The release of these proapoptotic molecules or mitochondrial factors is of critical importance to the progression of apoptosis. However, the mechanism by which the pr ...
MAUREEN CAROLINE McCANN Nationality
... Editorial board member of Planta Co-organizer, 8th International Cell Wall Meeting First Walter Pilnik award for research into pectins ...
... Editorial board member of Planta Co-organizer, 8th International Cell Wall Meeting First Walter Pilnik award for research into pectins ...
Enzymatic Evidence for Differences in the
... OLECULAR PROPERTIES of antigens of the Rh blood group system are currently the subject of intensive investigation.' Rh(D) antigen, the most important clinically, and the two commonly detected antigenic alleles, (C/c) and (E/e), which are usually expressed along with it, have been shown to be associa ...
... OLECULAR PROPERTIES of antigens of the Rh blood group system are currently the subject of intensive investigation.' Rh(D) antigen, the most important clinically, and the two commonly detected antigenic alleles, (C/c) and (E/e), which are usually expressed along with it, have been shown to be associa ...
Chapter 4
... Prokaryotic cells are much smaller than eukaryotic cells (< 5 µm long) Are very reproductively successful and so are more abundant Have a simple internal structure Surrounded by a stiff cell wall, which provides shape and protection Can take the shape of rods, spheres, or helices Copyright ...
... Prokaryotic cells are much smaller than eukaryotic cells (< 5 µm long) Are very reproductively successful and so are more abundant Have a simple internal structure Surrounded by a stiff cell wall, which provides shape and protection Can take the shape of rods, spheres, or helices Copyright ...
Yeast Hansenula wingei
... wingei NRRL Y-2340, strains 5 and 21, which were the agglutinative mating types. Growth of cells. The cells were grown in liquid medium of the following composition: glucose 30g., yeast extract Difco (Detroit, Michigan, U.S.A.) 7 g., KH,PO, 5 g., in 1000 ml. distilled water. This medium was dispense ...
... wingei NRRL Y-2340, strains 5 and 21, which were the agglutinative mating types. Growth of cells. The cells were grown in liquid medium of the following composition: glucose 30g., yeast extract Difco (Detroit, Michigan, U.S.A.) 7 g., KH,PO, 5 g., in 1000 ml. distilled water. This medium was dispense ...
Overexpression of vinculin suppresses cell motility in BALB/c 3T3 cells
... overexpression of vinculin in 3T3 cells by about 20%, following transfection, brings about a major change in the dynamic properties of cells. This was manifested by an extensive decrease in the migration of the transfected cells into an artificial wound and in a significant reduction in locomotory a ...
... overexpression of vinculin in 3T3 cells by about 20%, following transfection, brings about a major change in the dynamic properties of cells. This was manifested by an extensive decrease in the migration of the transfected cells into an artificial wound and in a significant reduction in locomotory a ...
bioactive peptides as signal molecules in plant defense, growth, and
... fundamentally different from that in animals. This view is changing, however, since over recent years brassinosteroids and jasmonates resembling animal steroids and prostaglandins, respectively, have been added to the group of chemical messengers in plants. Furthermore, there is now compelling evide ...
... fundamentally different from that in animals. This view is changing, however, since over recent years brassinosteroids and jasmonates resembling animal steroids and prostaglandins, respectively, have been added to the group of chemical messengers in plants. Furthermore, there is now compelling evide ...
The chemokine SDF1/CXCL12 and its receptor CXCR4 regulate
... (C) Cxcr4 message is enriched in PGCs relative to the somatic tissue. The level of Cxcr4 transcripts in E11.5 PGCs (GFP+) or somatic tissue (GFP–) were quantified by SYBR-green based RT-PCR. The meiotic marker, STAG3 (Pezzi et al., 2000) was used as a positive control for PGCs, and the gonadal marke ...
... (C) Cxcr4 message is enriched in PGCs relative to the somatic tissue. The level of Cxcr4 transcripts in E11.5 PGCs (GFP+) or somatic tissue (GFP–) were quantified by SYBR-green based RT-PCR. The meiotic marker, STAG3 (Pezzi et al., 2000) was used as a positive control for PGCs, and the gonadal marke ...
Redox Homeostasis and Antioxidant Signaling: A
... Membrane ascorbate and dehydroascorbate transport systems fail to maintain a highly reduced apoplastic ascorbate pool. Nonetheless, an ascorbate-based system could be important in driving plasma membrane and tonoplast electron transport chains. Both membranes contain an ascorbate-dependent cytochrom ...
... Membrane ascorbate and dehydroascorbate transport systems fail to maintain a highly reduced apoplastic ascorbate pool. Nonetheless, an ascorbate-based system could be important in driving plasma membrane and tonoplast electron transport chains. Both membranes contain an ascorbate-dependent cytochrom ...
Calorie Restriction Promotes Mammalian Cell Survival by Inducing
... induced in CR rats as well as in human cells that are treated with serum from these animals. Insulin and insulin-like growth factor 1 (IGF-1) attenuated this response. SIRT1 deacetylates the DNA repair factor Ku70, causing it to sequester the proapoptotic factor Bax away from mitochondria, thereby i ...
... induced in CR rats as well as in human cells that are treated with serum from these animals. Insulin and insulin-like growth factor 1 (IGF-1) attenuated this response. SIRT1 deacetylates the DNA repair factor Ku70, causing it to sequester the proapoptotic factor Bax away from mitochondria, thereby i ...
Extracellular matrix
In biology, the extracellular matrix (ECM) is a collection of extracellular molecules secreted by cells that provides structural and biochemical support to the surrounding cells. Because multicellularity evolved independently in different multicellular lineages, the composition of ECM varies between multicellular structures; however, cell adhesion, cell-to-cell communication and differentiation are common functions of the ECM.The animal extracellular matrix includes the interstitial matrix and the basement membrane. Interstitial matrix is present between various animal cells (i.e., in the intercellular spaces). Gels of polysaccharides and fibrous proteins fill the interstitial space and act as a compression buffer against the stress placed on the ECM. Basement membranes are sheet-like depositions of ECM on which various epithelial cells rest.The plant ECM includes cell wall components, like cellulose, in addition to more complex signaling molecules. Some single-celled organisms adopt multicelluar biofilms in which the cells are embedded in an ECM composed primarily of extracellular polymeric substances (EPS).