Introduction Cell Cycle
... 1.1. Growth and division The “dream” of every cell is to become two cells (Jacob, 1971). Or, in less anthropocentric words, the fate of a cell is to duplicate. Living organisms have developed from inanimate systems by selection for the function of duplication (Hartwell et al., 1999). By continuous d ...
... 1.1. Growth and division The “dream” of every cell is to become two cells (Jacob, 1971). Or, in less anthropocentric words, the fate of a cell is to duplicate. Living organisms have developed from inanimate systems by selection for the function of duplication (Hartwell et al., 1999). By continuous d ...
Potentiometric measurement of intracellular redox activity.
... pathways in cells involve redox reactions and specific redox couples that cycle between oxidized and reduced states. The concentrations of the redox couples help regulate the flow of metabolites through these pathways.1,2 Moreover, recent evidence suggests that the concentrations of specific redox c ...
... pathways in cells involve redox reactions and specific redox couples that cycle between oxidized and reduced states. The concentrations of the redox couples help regulate the flow of metabolites through these pathways.1,2 Moreover, recent evidence suggests that the concentrations of specific redox c ...
EVIDENCE FOR A PATHOGENIC ROLE OF A CELL
... except in renal allografts, and even in this setting only under special circumstances (3). Furthermore, in most morphologic studies of glomerulonephritis no mention is made of accumulation of mononuclear cells in glomeruli, and this has been used as an argument against a role of cell-mediated mechan ...
... except in renal allografts, and even in this setting only under special circumstances (3). Furthermore, in most morphologic studies of glomerulonephritis no mention is made of accumulation of mononuclear cells in glomeruli, and this has been used as an argument against a role of cell-mediated mechan ...
CELL DIVISION AND DNA SYNTHESIS IN TETRAHYMENA
... the interdivision interval. We have noted a transition point late in the interdivision interval (80 per cent of the cycle) after which division delay is not inducible by amino acid deprivation or step-down in medium (enriched synthetic to complete synthetic). Rasmussen and Zeuthen (11) have noted a ...
... the interdivision interval. We have noted a transition point late in the interdivision interval (80 per cent of the cycle) after which division delay is not inducible by amino acid deprivation or step-down in medium (enriched synthetic to complete synthetic). Rasmussen and Zeuthen (11) have noted a ...
Hydrocortisone perturbs the cell proliferation pattern during feather
... decreased in the interplumar areas (compare Rg. 3F and Rg. 3B-D). Serial longitudinal sections showed that more developed rudiments displayed features of E 6.5 feather buds, i.e., unlabeled epidermal placodes and labeled aggregating dermal cells (Fig. 4C). Both low and high magnifications corroborat ...
... decreased in the interplumar areas (compare Rg. 3F and Rg. 3B-D). Serial longitudinal sections showed that more developed rudiments displayed features of E 6.5 feather buds, i.e., unlabeled epidermal placodes and labeled aggregating dermal cells (Fig. 4C). Both low and high magnifications corroborat ...
Cell Energetics
... Cell Energetic Respiration is a process used by plants and animals to create energy for the cells in the body to use. In respiration, glucose in the cells is broken down into smaller units of energy called ATP. The ATP acts as a battery that can plug into the cell and provide it with energy. There a ...
... Cell Energetic Respiration is a process used by plants and animals to create energy for the cells in the body to use. In respiration, glucose in the cells is broken down into smaller units of energy called ATP. The ATP acts as a battery that can plug into the cell and provide it with energy. There a ...
The KASH domain protein MSP-300 plays an essential role
... identified (Volk, 1992). Several differently spliced transcripts were also predicted by the Drosophila database. However, the C-terminal end of the gene, which is separated from the rest of msp-300 by a 45 kb intron, was only identified recently (Starr and Han, 2002; Zhang et al., 2002). The mechani ...
... identified (Volk, 1992). Several differently spliced transcripts were also predicted by the Drosophila database. However, the C-terminal end of the gene, which is separated from the rest of msp-300 by a 45 kb intron, was only identified recently (Starr and Han, 2002; Zhang et al., 2002). The mechani ...
Embryo_seedling
... also be stored in thickened cell walls (of endosperm or cotyledons) composed mostly of hemicelluloses. Protein is stored in granules enclosed in membrane derived from the tonoplast and may consist of globulins. Oil is stored as triglyceride in cytoplasmic granules, which may be bound by a unit membr ...
... also be stored in thickened cell walls (of endosperm or cotyledons) composed mostly of hemicelluloses. Protein is stored in granules enclosed in membrane derived from the tonoplast and may consist of globulins. Oil is stored as triglyceride in cytoplasmic granules, which may be bound by a unit membr ...
to the complete text
... make it a good model system in which to study many aspects of the actin cytoskeleton. Cell division, secretion and signaling are well studied in the yeast system. A useful and popular method to screen for genetic interactions is to look for ‘synthetic lethality’: cells defective in either of two gen ...
... make it a good model system in which to study many aspects of the actin cytoskeleton. Cell division, secretion and signaling are well studied in the yeast system. A useful and popular method to screen for genetic interactions is to look for ‘synthetic lethality’: cells defective in either of two gen ...
Cellular Respiration - Kawameeh Middle School
... Cellular Respiration and Photosynthesis • Notice that the cellular respiration equation is the breakdown of those molecules made through photosynthesis and that it also uses the waste products of photosynthesis. • Notice that photosynthesis uses those products made by cellular respiration. • This i ...
... Cellular Respiration and Photosynthesis • Notice that the cellular respiration equation is the breakdown of those molecules made through photosynthesis and that it also uses the waste products of photosynthesis. • Notice that photosynthesis uses those products made by cellular respiration. • This i ...
Natural selection and evolution of antibiotic resistance in bacteria
... infections were rare but there frequency increased rapidly as antibiotic use increased. In fact, most of the antibiotics which were first used in the 1940s and 1950s are no longer used clinically because resistance to these antibiotics is now so commonplace. New antibiotics were developed over time ...
... infections were rare but there frequency increased rapidly as antibiotic use increased. In fact, most of the antibiotics which were first used in the 1940s and 1950s are no longer used clinically because resistance to these antibiotics is now so commonplace. New antibiotics were developed over time ...
For unknown reasons, p21 expression induces different effects in
... different cellular responses such as cell cycle arrest, senescence, apoptosis or necrosis, depending on the intensity of the oxidative damage (17). We have shown that ROS are important in determining cell fate after p53 upregulation (18). Moreover, we have reported that p21 can increase ROS levels i ...
... different cellular responses such as cell cycle arrest, senescence, apoptosis or necrosis, depending on the intensity of the oxidative damage (17). We have shown that ROS are important in determining cell fate after p53 upregulation (18). Moreover, we have reported that p21 can increase ROS levels i ...
GFP in plants - Haseloff Lab
... potato virus X (Ref. 5) and the tobacco mosaic virusbased vectors (S.J. Casper and C.A. Holt, unpublished). The use of these cytoplasmic RNA viruses evades any problem with aberrant splicing and very high levels of GFP fluorescence have been seen in infected plants. It is clear that the GFP apoprote ...
... potato virus X (Ref. 5) and the tobacco mosaic virusbased vectors (S.J. Casper and C.A. Holt, unpublished). The use of these cytoplasmic RNA viruses evades any problem with aberrant splicing and very high levels of GFP fluorescence have been seen in infected plants. It is clear that the GFP apoprote ...
Asymmetric cell division in C. elegans - Development
... promote anterior migration by activating a separate, undefined pathway. egl-20 is expressed by a small group of cells in the posterior body region. However, despite this localized expression in the animal, EGL-20 does not act as a positiondependent morphogen to specify these distinct migratory fates ...
... promote anterior migration by activating a separate, undefined pathway. egl-20 is expressed by a small group of cells in the posterior body region. However, despite this localized expression in the animal, EGL-20 does not act as a positiondependent morphogen to specify these distinct migratory fates ...
RNA nuclear export is blocked by poliovirus 2A protease and is
... Next, we decided to assay the impact of PV 2Apro on the export of bulk cellular mRNAs using in-situ-hybridization assays with a fluorescein-labeled oligo d(T) probe against poly(A) tail. Oligo d(A) probe or a mixture of both probes [either 1:1 or 5:1 ratio of oligo d(A) to oligo d(T)] was used as a ...
... Next, we decided to assay the impact of PV 2Apro on the export of bulk cellular mRNAs using in-situ-hybridization assays with a fluorescein-labeled oligo d(T) probe against poly(A) tail. Oligo d(A) probe or a mixture of both probes [either 1:1 or 5:1 ratio of oligo d(A) to oligo d(T)] was used as a ...
Certain Aspects of Cell Lineage and Morphogenesis
... embryos of this third batch pole cells which have migrated interblastodermally will therefore escape treatment with ultra-violet light. The micro-beam in all cases was 60 fx in diameter (Plate 1, fig. 1) and was administered for 30 seconds. All these eggs were fixed at 15 hours, sectioned, and exami ...
... embryos of this third batch pole cells which have migrated interblastodermally will therefore escape treatment with ultra-violet light. The micro-beam in all cases was 60 fx in diameter (Plate 1, fig. 1) and was administered for 30 seconds. All these eggs were fixed at 15 hours, sectioned, and exami ...
Phosphoinositide Signaling Regulates the Exocyst Complex and
... Phosphatidylinositol-4,5-biphosphate (PIP2) is a lipid messenger that modulates many diverse biological processes, including regulation of actin cytoskeletal dynamics, cell migration, cell-cell contact formation, endocytosis, and exocytosis (Heck et al., 2007; Ling et al., 2006; van den Bout and Div ...
... Phosphatidylinositol-4,5-biphosphate (PIP2) is a lipid messenger that modulates many diverse biological processes, including regulation of actin cytoskeletal dynamics, cell migration, cell-cell contact formation, endocytosis, and exocytosis (Heck et al., 2007; Ling et al., 2006; van den Bout and Div ...
Journal of Biological Chemistry. 2004 Feb 20
... The survival of cancer patients with solid tumors decreases dramatically when tumors are invasive and have an increased likelihood of metastasizing to distal sites. ...
... The survival of cancer patients with solid tumors decreases dramatically when tumors are invasive and have an increased likelihood of metastasizing to distal sites. ...
Studies on host-virus interaction for viral hemorrhagic septicemia
... his continued work on unanswered topics. Furthermore, I am more than appreciative of all the support given to me by the other members of the Leaman lab. In particular, I acknowledge Kuldeep Sudini, who frequently helped me organize ideas and generate new ones. He is a fountain of knowledge that help ...
... his continued work on unanswered topics. Furthermore, I am more than appreciative of all the support given to me by the other members of the Leaman lab. In particular, I acknowledge Kuldeep Sudini, who frequently helped me organize ideas and generate new ones. He is a fountain of knowledge that help ...
Yeeeeeeea Haaaaaw! Grab yer hat and saddle the broncs! It`s time
... 1. CRIME: What has this organelle done? Why is this organelle "wanted"? In other words, what does it do for the cell? Or, what is the organelle’s function? 2. PHYSICAL DESCRIPTION: What does the organelle look like? Provide a description and an actual picture. The picture can be a mug shot (prin ...
... 1. CRIME: What has this organelle done? Why is this organelle "wanted"? In other words, what does it do for the cell? Or, what is the organelle’s function? 2. PHYSICAL DESCRIPTION: What does the organelle look like? Provide a description and an actual picture. The picture can be a mug shot (prin ...
ch4 Jeopardy-11 - Room 189`s Wiki at PACS
... A cell can transport a substance from a lower to a higher concentration by the physiological process of a. Active transport (correct answer) b. Facilitated diffusion c. Osmosis d. Simple diffusion BACK TO GAME ...
... A cell can transport a substance from a lower to a higher concentration by the physiological process of a. Active transport (correct answer) b. Facilitated diffusion c. Osmosis d. Simple diffusion BACK TO GAME ...
THE PLAY ABOUT A PLANT CELL, AN ANIMAL CELL, AND A
... Nucleus: (looking around)Organelles, organelles…(clapping hands)Let’s go, let’s go. Get back to work. No slacking. I am checking our stats and we are getting low….on EVERYTHING!!!! We need to go, go, go!!!! Cell membrane: Well, there’s the boss. She is always telling us what to do! Oxy: Wow, she is ...
... Nucleus: (looking around)Organelles, organelles…(clapping hands)Let’s go, let’s go. Get back to work. No slacking. I am checking our stats and we are getting low….on EVERYTHING!!!! We need to go, go, go!!!! Cell membrane: Well, there’s the boss. She is always telling us what to do! Oxy: Wow, she is ...
Concept 39.2: Plant hormones help coordinate growth, development
... • Plant hormones are produced in very low concentration, but a minute amount can greatly affect growth and development of a plant organ • In general, hormones control plant growth and development by affecting the division, elongation, and differentiation of cells ...
... • Plant hormones are produced in very low concentration, but a minute amount can greatly affect growth and development of a plant organ • In general, hormones control plant growth and development by affecting the division, elongation, and differentiation of cells ...
Quantitative reverse transcription polymerase chain reaction
... coli, namely 6700–71 000 depending on the growth rate and the physiological state (Gourse et al., 1996). The number of mRNA copies for the tuf gene in exponentially growing cells (i.e. 200–370 copies cell−1) was also similar to the data reported for highly expressed genes in other organisms (Karlin ...
... coli, namely 6700–71 000 depending on the growth rate and the physiological state (Gourse et al., 1996). The number of mRNA copies for the tuf gene in exponentially growing cells (i.e. 200–370 copies cell−1) was also similar to the data reported for highly expressed genes in other organisms (Karlin ...
chapter 1 slides - Mrs. Brenner`s Biology
... • All living organisms must reproduce to maintain a population. • The manner of reproduction varies among different organisms. • When organisms reproduce, they pass on copies of their genetic information (genes) to the next generation. Genes determine the characteristics of an organism. Genes ar ...
... • All living organisms must reproduce to maintain a population. • The manner of reproduction varies among different organisms. • When organisms reproduce, they pass on copies of their genetic information (genes) to the next generation. Genes determine the characteristics of an organism. Genes ar ...
Cellular differentiation
In developmental biology, cellular differentiation isa cell changes from one cell type to another. Most commonly this is a less specialized type becoming a more specialized type, such as during cell growth. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover. Some differentiation occurs in response to antigen exposure. Differentiation dramatically changes a cell's size, shape, membrane potential, metabolic activity, and responsiveness to signals. These changes are largely due to highly controlled modifications in gene expression and are the study of epigenetics. With a few exceptions, cellular differentiation almost never involves a change in the DNA sequence itself. Thus, different cells can have very different physical characteristics despite having the same genome.A cell that can differentiate into all cell types of the adult organism is known as pluripotent. Such cells are called embryonic stem cells in animals and meristematic cells in higher plants. A cell that can differentiate into all cell types, including the placental tissue, is known as totipotent. In mammals, only the zygote and subsequent blastomeres are totipotent, while in plants many differentiated cells can become totipotent with simple laboratory techniques. In cytopathology, the level of cellular differentiation is used as a measure of cancer progression. ""Grade"" is a marker of how differentiated a cell in a tumor is.