microbe images
... surfaces of other bacteria, host cells and some are specialised for DNA transfer. ...
... surfaces of other bacteria, host cells and some are specialised for DNA transfer. ...
volvox notes, 14
... cells coordinate their flagella so that the volvox sphere moves in one direction. Color the nucleus purple. Each of the cells in volvox has 2 flagella (spinning, whip-like propellers that help move the colony). Color the flagella black. Flagella are beat by individual cells together with other cells ...
... cells coordinate their flagella so that the volvox sphere moves in one direction. Color the nucleus purple. Each of the cells in volvox has 2 flagella (spinning, whip-like propellers that help move the colony). Color the flagella black. Flagella are beat by individual cells together with other cells ...
Coordination of Cell Cycle Progression and Mitotic
... frequently involves regulation of antisense transcription (Margaritis et al. 2012; Castelnuovo et al. 2014). While much effort has been spent to elucidate how H3K4 methylation states correlate with gene expression patterns (Briggs et al. 2001; Bernstein et al. 2002; Santos-Rosa et al. 2002; Boa et ...
... frequently involves regulation of antisense transcription (Margaritis et al. 2012; Castelnuovo et al. 2014). While much effort has been spent to elucidate how H3K4 methylation states correlate with gene expression patterns (Briggs et al. 2001; Bernstein et al. 2002; Santos-Rosa et al. 2002; Boa et ...
Intercellular Communication during Plant
... their collective growth and development. A key innovation was intercellular communication. The two primary groups of multicellular eukaryotes, plants and animals, independently evolved multicellularity and various mechanisms for effective intercellular communication. Plants rely extensively on local ...
... their collective growth and development. A key innovation was intercellular communication. The two primary groups of multicellular eukaryotes, plants and animals, independently evolved multicellularity and various mechanisms for effective intercellular communication. Plants rely extensively on local ...
Microtubules do not promote mitotic slippage when the spindle
... the lower the drug concentration the faster a cell escapes mitosis (Rieder and Maiato, 2004). The reasons for this remain vague. However, work on hamster (Andreassen and Margolis, 1994) and human nontransformed (Brito and Rieder, 2006) and cancer (Jordan et al., 1992) cells reveals that accelerated ...
... the lower the drug concentration the faster a cell escapes mitosis (Rieder and Maiato, 2004). The reasons for this remain vague. However, work on hamster (Andreassen and Margolis, 1994) and human nontransformed (Brito and Rieder, 2006) and cancer (Jordan et al., 1992) cells reveals that accelerated ...
The Size of It All
... Fluorescence Microscope • Used to rapidly detect and identify microbes in tissues or clinical specimens Technique: fluorescent antibody (FA) or immunofluorescence. Specific antibodies are treated so that they are fluorescent. The antibodies are then applied to the specimen, if the antigens are pres ...
... Fluorescence Microscope • Used to rapidly detect and identify microbes in tissues or clinical specimens Technique: fluorescent antibody (FA) or immunofluorescence. Specific antibodies are treated so that they are fluorescent. The antibodies are then applied to the specimen, if the antigens are pres ...
Name Class Date Prokaryotes (aka Bacterial Cells) Make Up #14
... form plants can use through a process called nitrogen fixation. Humans use bacteria in industry, food production, and other ways. Prokaryotes can also disrupt the health of ecosystems, as when explosive algae growth can lead to low oxygen levels in bodies of water, killing off fish and other aquatic ...
... form plants can use through a process called nitrogen fixation. Humans use bacteria in industry, food production, and other ways. Prokaryotes can also disrupt the health of ecosystems, as when explosive algae growth can lead to low oxygen levels in bodies of water, killing off fish and other aquatic ...
Cells and Their Structures
... mitochondria Organelle where cellular respiration occurs; known as the "powerhouse" of the cell because this is the organelle where the ATP that powers the cell is produced. nuclear envelope A double membrane that surrounds the nucleus; helps regulate the passage of molecules in and out of the nucle ...
... mitochondria Organelle where cellular respiration occurs; known as the "powerhouse" of the cell because this is the organelle where the ATP that powers the cell is produced. nuclear envelope A double membrane that surrounds the nucleus; helps regulate the passage of molecules in and out of the nucle ...
Lecture - ltcconline.net
... • Light microscopes can be used to explore the structures and functions of cells. • When scientists examine a specimen on a microscope slide, – light passes through the specimen and – lenses enlarge, or magnify, the image. ...
... • Light microscopes can be used to explore the structures and functions of cells. • When scientists examine a specimen on a microscope slide, – light passes through the specimen and – lenses enlarge, or magnify, the image. ...
Intro II – Viral Replication
... from the RNA genomes of (–) strand RNA viruses. These virus particles therefore contain virusencoded, RNA-dependent RNA polymerases that produce mRNAs from the (–) strand genome. This strand is also the template for the synthesis of full-length (+) strands, which in turn are copied to produce (–) st ...
... from the RNA genomes of (–) strand RNA viruses. These virus particles therefore contain virusencoded, RNA-dependent RNA polymerases that produce mRNAs from the (–) strand genome. This strand is also the template for the synthesis of full-length (+) strands, which in turn are copied to produce (–) st ...
Cell adhesion in plants is under the control of
... about how the plant actually controls and maintains cell adhesion during growth and development and how it deals with the dynamic cell wall remodeling that takes place. Here we investigate the molecular mechanisms that control cell adhesion in plants. We carried out a genetic suppressor screen and a ...
... about how the plant actually controls and maintains cell adhesion during growth and development and how it deals with the dynamic cell wall remodeling that takes place. Here we investigate the molecular mechanisms that control cell adhesion in plants. We carried out a genetic suppressor screen and a ...
Model Position Paper 1
... recent years. Stem cells are different from other types of cells because they are unspecialized cells; they are able to renew themselves through cell division and to develop into more than two hundred types of cells that humans have (Clemmitt 12). These cells are capable of surviving a lifetime. Ste ...
... recent years. Stem cells are different from other types of cells because they are unspecialized cells; they are able to renew themselves through cell division and to develop into more than two hundred types of cells that humans have (Clemmitt 12). These cells are capable of surviving a lifetime. Ste ...
The Euglena - Hamilton Local Schools
... Phylum Euglenophyta. All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment. Euglena usually live in quiet ponds or puddles. Euglena move by a flagellum (plural = flagella), which is ...
... Phylum Euglenophyta. All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment. Euglena usually live in quiet ponds or puddles. Euglena move by a flagellum (plural = flagella), which is ...
The SPA2 Protein of Yeast Localizes to Sites of Cell Growth
... polarized cell growth. In late G1 of the cell cycle, bud synthesis initiates at a site on the edge of the cell. Bud growth continues principally at the bud tip until the size of the bud nears that of the mother cell (Byers, 1981; Adams and Pringle, 1984). Cytological observations suggest that microt ...
... polarized cell growth. In late G1 of the cell cycle, bud synthesis initiates at a site on the edge of the cell. Bud growth continues principally at the bud tip until the size of the bud nears that of the mother cell (Byers, 1981; Adams and Pringle, 1984). Cytological observations suggest that microt ...
Racial differences in B cell receptor signaling pathway activation
... Results: Analysis of BCR signaling activity in European American and African American PBMC samples revealed that, compared to the European American donors, B cells from African Americans had lower anti-IgD induced phosphorylation of multiple BCR pathway components, including the membrane proximal pr ...
... Results: Analysis of BCR signaling activity in European American and African American PBMC samples revealed that, compared to the European American donors, B cells from African Americans had lower anti-IgD induced phosphorylation of multiple BCR pathway components, including the membrane proximal pr ...
Membrane Potential and the Action Potential
... point is called the potassium equilibrium potential (Ek+). Because the movements of ions is governed by physical laws, the equilibrium potential for potassium can be calculated if you know the concentration of potassium across the membrane. The equation that takes into account the physical laws that ...
... point is called the potassium equilibrium potential (Ek+). Because the movements of ions is governed by physical laws, the equilibrium potential for potassium can be calculated if you know the concentration of potassium across the membrane. The equation that takes into account the physical laws that ...
Sexual Reproduction in Higher Plants I: Fertilization and Zygotic
... Mutation of MYB98 leads to the defects in synergid cell development, in particular the filiform apparatus formation. In srn and feronia (fer) mutants, pollen tubes are correctly guided towards and are able to penetrate the embryo sac, but cannot release the sperms. More interestingly, it has been ob ...
... Mutation of MYB98 leads to the defects in synergid cell development, in particular the filiform apparatus formation. In srn and feronia (fer) mutants, pollen tubes are correctly guided towards and are able to penetrate the embryo sac, but cannot release the sperms. More interestingly, it has been ob ...
7-2 Eukaryotic Cell Structure
... oEukaryotic Cell Structures oStructures within a eukaryotic cell that perform important cellular functions are known as ...
... oEukaryotic Cell Structures oStructures within a eukaryotic cell that perform important cellular functions are known as ...
Integr. Comp. Biol., 43:55–63 Epithelium—the primary building block
... must be considered the default type in the Eumetazoa because it arises first in embryonic development and because mesenchyme arises from it by a switching off of the mechanisms that underly differentiation and maintenance of epithelial cells. In the few model metazoans whose epithelia have been stud ...
... must be considered the default type in the Eumetazoa because it arises first in embryonic development and because mesenchyme arises from it by a switching off of the mechanisms that underly differentiation and maintenance of epithelial cells. In the few model metazoans whose epithelia have been stud ...
Cell cycle
The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication (replication) that produces two daughter cells. In prokaryotes which lack a cell nucleus, the cell cycle occurs via a process termed binary fission. In cells with a nucleus, as in eukaryotes, the cell cycle can be divided into three periods: interphase, the mitotic (M) phase, and cytokinesis. During interphase, the cell grows, accumulating nutrients needed for mitosis, preparing it for cell division and duplicating its DNA. During the mitotic phase, the cell splits itself into two distinct daughter cells. During the final stage, cytokinesis, the new cell is completely divided. To ensure the proper division of the cell, there are control mechanisms known as cell cycle checkpoints.The cell-division cycle is a vital process by which a single-celled fertilized egg develops into a mature organism, as well as the process by which hair, skin, blood cells, and some internal organs are renewed. After cell division, each of the daughter cells begin the interphase of a new cycle. Although the various stages of interphase are not usually morphologically distinguishable, each phase of the cell cycle has a distinct set of specialized biochemical processes that prepare the cell for initiation of cell division.