• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
BIOL_218_MTX3_QA_101110.53
BIOL_218_MTX3_QA_101110.53

... projection fibers ...
Electron Microscopy of Intermediate Filaments: Teaming up with
Electron Microscopy of Intermediate Filaments: Teaming up with

... IFs were definitely identified a year later as unique structural elements of approximately 10 nm diameter by the group of Howard Holtzer in skeletal muscle cells cultured from chick embryos (Ishikawa et al., 1968). These authors noticed them as unique structures at all stages of development, because ...
A New Subfamily of Major Intrinsic Proteins in
A New Subfamily of Major Intrinsic Proteins in

... are visualized in red and blue, respectively). The top of the structure is facing periplasmic space and the arrow indicates the orientation of the pore. The side chains of N68, N203, and R206, together with the carbonyl oxygen of H66 form part of the helical polar strip that interacts with hydroxyl ...
Quantitative analysis of changes in spatial distribution and plus
Quantitative analysis of changes in spatial distribution and plus

... types are shown as colored dots (yellow, blunt ends; green, extended ends; red, horned ends; blue, flared ends). The high proportion of yellow dots associated with the solid phragmoplast cell-plate assembly matrix (Fig. 3B) illustrates that the association of a microtubule plus end with the cellplat ...
Ribosome-tethered molecular chaperones
Ribosome-tethered molecular chaperones

... from the cytosol by the ribosome exit tunnel [4]. Recent evidence indicates that after the chain leaves the tunnel, molecular chaperones bind, preventing aggregation. Both prokaryotic and eukaryotic chaperones have evolved to associate specifically with ribosomes and bind to polypeptide chains that ...
Practice Test Answer Key
Practice Test Answer Key

... b. control the amount of water entering the cell. c. remove waste materials from the cell. d. remove excess water from the cell. ____ 13. Plant and animal cells are alike in that they both have a. cell walls. c. cell membranes. b. chloroplasts. d. all of these. ____ 14. One cell part that is found i ...
gauze bandages with a bound antimicrobial polymer suppress
gauze bandages with a bound antimicrobial polymer suppress

... disadvantage of gauze bandages is the absorption of exudates into the dressing. Exudates absorption contributes to the development of high levels of bacteria in the dressing. A new gauze bandage with a bound antimicrobial polymer was used instead of standard gauze bandages in the treatment of three ...
letters - Cytomorpholab
letters - Cytomorpholab

... indicates that AtFH5 has a role in cytokinesis. A fluorescent dotted pattern of undetermined identity was also observed in the cytoplasm (Fig. 3) and might not reflect the true localization of AtFH5, as potential artifacts may be associated with overexpression of AtFH5–GFP. The endosperm in the Arab ...
The cell walls of streptococci
The cell walls of streptococci

... In the solvent butanol + pyridine + water the order of separation was the same as glucose and in the solvent phenol+aqueous ammonia (phenol 160 g., water 40 ml. in an ammoniacal atmosphere) the mobility of the unknown sugar was 2.0 relative to glucose (Crumpton, 1959). This unknown amino sugar was t ...
regulation of the cytoskeleton and cell adhesion by
regulation of the cytoskeleton and cell adhesion by

Significance of hydrolytic enzymes expressed during xylem
Significance of hydrolytic enzymes expressed during xylem

... Vascular plants (tracheophytes) are the dominating plants on earth and colonize most terrestrial ecosystems. In an aerial environment, the uptake of CO2 through the stomata, which is required for photosynthetic carbon assimilation, is inevitably accompanied by transpiratory water loss. As a conseque ...
Asymmetric adhesion of rod-shaped bacteria controls microcolony
Asymmetric adhesion of rod-shaped bacteria controls microcolony

... Bacterial biofilms are spatially structured communities, within which bacteria can differentiate depending on environmental conditions. During biofilm formation, bacteria attach to a surface and use cell-cell contacts to convey the signals required for the coordination of biofilm morphogenesis. How ...
Regulation of tubulin heterodimer partitioning during interphase and
Regulation of tubulin heterodimer partitioning during interphase and

... partitioning in all three human cell model systems studied. Moreover, consistent with phosphorylation-inactivation of these two proteins during mitosis, we found that the microtubule-regulatory activities of both MAP4 and Op18 were only evident in interphase cells. Importantly, by employing a system ...
The Effect of Chemical Treatments of Albumin and Orosomucoid on
The Effect of Chemical Treatments of Albumin and Orosomucoid on

... difficult to interpret in terms of mechanism. The results of one investigation may relate to a given protein in its monomeric form, and those of another may relate to it in some ill-defined aggregated form. Meaningful comparison of such results is impossible, since two such preparations of the same ...
Adaptation and Protein Quality Control Under Metalloid
Adaptation and Protein Quality Control Under Metalloid

... 1. Mechanisms of tellurite toxicity Aim. Investigate the mechanistic basis of tellurite toxicity. Method. A genome-wide screen of tellurite sensitive mutants was performed. Phenotypic changes in fitness and accumulation of elemental tellurium were quantified. Main findings. Toxicity of tellurite is ...
Similarities and Differences in the Glycosylation Mechanisms in
Similarities and Differences in the Glycosylation Mechanisms in

... relaxed substrate specificity exemplified by its ability to complement a Wzx deficiency in O-antigen biosynthesis in E. coli. Notably, all bacterial N-glycans identified to date have seven or fewer sugar residues, with many archaeal structures being of a similar size (Figure 4). As described earlier ...
Isolation of AtSUC2 promoter-GFP
Isolation of AtSUC2 promoter-GFP

... potassium channels. To bridge this gap, we applied the laser microdissection and pressure catapulting (LMPC) technique to the vascular-rich ¯ower stalk of Arabidopsis. Following the excision of about 150 individual phloem sectors (Figure 1a), mRNA was isolated and probed for the presence of transcri ...
The Membrane Steps of Bacterial Cell Wall Synthesis as Antibiotic
The Membrane Steps of Bacterial Cell Wall Synthesis as Antibiotic

... Received: 19 June 2016; Accepted: 19 August 2016; Published: 26 August 2016 ...
Plant lipid transfer proteins  - Evolution, expression and function Monika Edstam
Plant lipid transfer proteins - Evolution, expression and function Monika Edstam

... a protective layer consisting mainly of lipids and is found on epidermal cells in the aerial parts of a plant. It was a very important structure in the transition from water to land, since it protects the plant from radiation, dehydration and pathogens (Jenks et al., 1994; Rozema et al., 1997). Seve ...
Genetic analysis of seed coat development in Arabidopsis
Genetic analysis of seed coat development in Arabidopsis

... or following fertilization must signal the seed coat to develop coordinately with the other tissues. Two recent studies have used mutants to provide evidence for the influence of the endosperm on both the growth and the differentiation of the seed coat. The control of seed coat growth relative to th ...
Endocytic membrane fusion and buckling
Endocytic membrane fusion and buckling

... PM is important during the resolution of the ICB (Baluska et al., 2006). However, the function and timing of these fusion events remain controversial. Some studies suggest that asymmetric and synchronous fusion of secretory organelles during late telophase mediates abscission (Gromley et al., 2005). ...
Coarse-Grained Modeling of ProteinDynamics
Coarse-Grained Modeling of ProteinDynamics

... A number of mean-resolution CG models have been developed for protein structure prediction (Kolinski and Skolnick 2004). Some of them enable efficient simulation of dynamic processes. A typical example is the CABS model (Kolinski 2004), which acronym stands for the united atoms representing a single ...
Text - Enlighten: Publications
Text - Enlighten: Publications

... The protocol developed here for live labeling of root hairs is both simple and convenient, and is outlined in Figure 1. The elimination of fixation, dehydration and embedding is advantageous especially for handling such fragile specimens as root hairs. This methodology also does not require sectioni ...
Microscopy studies on uncultivated magnetotactic bacteria
Microscopy studies on uncultivated magnetotactic bacteria

A model of chloroplast growth regulation in mesophyll cells
A model of chloroplast growth regulation in mesophyll cells

< 1 ... 38 39 40 41 42 43 44 45 46 ... 1009 >

Endomembrane system

The endomembrane system is composed of the different membranes that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments, or organelles. In eukaryotes the organelles of the endomembrane system include: the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, endosomes and the cell membrane. The system is defined more accurately as the set of membranes that form a single functional and developmental unit, either being connected directly, or exchanging material through vesicle transport. Importantly, the endomembrane system does not include the membranes of mitochondria or chloroplasts.The nuclear membrane contains two lipid bilayers that encompass the contents of the nucleus. The endoplasmic reticulum (ER) is a synthesis and transport organelle that branches into the cytoplasm in plant and animal cells. The Golgi apparatus is a series of multiple compartments where molecules are packaged for delivery to other cell components or for secretion from the cell. Vacuoles, which are found in both plant and animal cells (though much bigger in plant cells), are responsible for maintaining the shape and structure of the cell as well as storing waste products. A vesicle is a relatively small, membrane-enclosed sac that stores or transports substances. The cell membrane, is a protective barrier that regulates what enters and leaves the cell. There is also an organelle known as the Spitzenkörper that is only found in fungi, and is connected with hyphal tip growth.In prokaryotes endomembranes are rare, although in many photosynthetic bacteria the plasma membrane is highly folded and most of the cell cytoplasm is filled with layers of light-gathering membrane. These light-gathering membranes may even form enclosed structures called chlorosomes in green sulfur bacteria.The organelles of the endomembrane system are related through direct contact or by the transfer of membrane segments as vesicles. Despite these relationships, the various membranes are not identical in structure and function. The thickness, molecular composition, and metabolic behavior of a membrane are not fixed, they may be modified several times during the membrane's life. One unifying characteristic the membranes share is a lipid bilayer, with proteins attached to either side or traversing them.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report