Model Questions 1
... 12- What are the main functions of the epithelial tissue (give examples)? a. Protection (Against wear and tear, Keratin and mucous prevent drying) b. Absorption & filtration (Microvilli in kidney and intestine) c. Surface transport (Via cilia on cell surface) d. Secretion (all glands are epithelia) ...
... 12- What are the main functions of the epithelial tissue (give examples)? a. Protection (Against wear and tear, Keratin and mucous prevent drying) b. Absorption & filtration (Microvilli in kidney and intestine) c. Surface transport (Via cilia on cell surface) d. Secretion (all glands are epithelia) ...
Molecular paleontology and complexity in the last eukaryotic
... extant eukaryotes are likely less complex than LECA, and that there is overlap in complexity between prokaryotic and eukaryotic organisms; note that complexity itself is a difficult term, and here is taken as a composite of genomic and cellular functional complexity/differentiation. The lower schema ...
... extant eukaryotes are likely less complex than LECA, and that there is overlap in complexity between prokaryotic and eukaryotic organisms; note that complexity itself is a difficult term, and here is taken as a composite of genomic and cellular functional complexity/differentiation. The lower schema ...
Translocation and Clustering of Endosomes and
... analyzed the movement of these labeled endocytic organdies in vivo by video-enhanced fluorescence microscopy. Translocation of endosomes and lysosomes occurs along linear tracks (up to 10 I~m long) by discontinuous saltations (with velocities of up to 2.5 gm/s). Organdies move bidirectionally with r ...
... analyzed the movement of these labeled endocytic organdies in vivo by video-enhanced fluorescence microscopy. Translocation of endosomes and lysosomes occurs along linear tracks (up to 10 I~m long) by discontinuous saltations (with velocities of up to 2.5 gm/s). Organdies move bidirectionally with r ...
Untitled - University of Guelph
... that molecular-genetic and cell-biological tools have been effectively combined for dissecting plant cell morphogenesis. Increased understanding of the polar growth characteristics of model cell types, the availability of many morphological mutants and significant advances in fluorescent-protein-aid ...
... that molecular-genetic and cell-biological tools have been effectively combined for dissecting plant cell morphogenesis. Increased understanding of the polar growth characteristics of model cell types, the availability of many morphological mutants and significant advances in fluorescent-protein-aid ...
Identification of the Protein Storage Vacuole
... An important aspect of vacuole biogenesis regards the trafficking of resident proteins to these compartments. There is vast experimental evidence that proteins destined for the lytic vacuole are first transported from the endoplasmic reticulum (ER) through the Golgi apparatus; clathrin-coated vesicl ...
... An important aspect of vacuole biogenesis regards the trafficking of resident proteins to these compartments. There is vast experimental evidence that proteins destined for the lytic vacuole are first transported from the endoplasmic reticulum (ER) through the Golgi apparatus; clathrin-coated vesicl ...
Lysis by Agents of Microbial Origin
... However, it can be no simple matter to decide, in a given instance, whether one deals with a truly bacteriolytic agent or with a mere inducer of autolysis. A valid criterion allowing the choice between these two hypotheses would be the possibility of using a highly specific inhibitor of the autolyti ...
... However, it can be no simple matter to decide, in a given instance, whether one deals with a truly bacteriolytic agent or with a mere inducer of autolysis. A valid criterion allowing the choice between these two hypotheses would be the possibility of using a highly specific inhibitor of the autolyti ...
The Thyroid Gland Lecture
... 93 % hormone secreted by T. gland is Thyroxine (T4). 7 % is triiodothyronine (T3). ...
... 93 % hormone secreted by T. gland is Thyroxine (T4). 7 % is triiodothyronine (T3). ...
OSMOSIS (A self-instructional package)
... INPUT 6 We have briefly dealt with the osmotic properties of solutions. Let us now consider the osmotic behavior of typical animal cells. For this purpose we will use a very simple cell, the human erythrocyte, as a model. For our purposes we will consider the red cell to be a solution of hemoglobin, ...
... INPUT 6 We have briefly dealt with the osmotic properties of solutions. Let us now consider the osmotic behavior of typical animal cells. For this purpose we will use a very simple cell, the human erythrocyte, as a model. For our purposes we will consider the red cell to be a solution of hemoglobin, ...
Tissue: The Living Fabric
... conforms to that of the cell. The nucleus of a squamous cell is thin and flattened; that of a cuboidal cell is spherical; and a columnar cell nucleus is elongated from top to bottom and is usually located close to the cell base. Nuclear shape is an important structural characteristic to keep in mind ...
... conforms to that of the cell. The nucleus of a squamous cell is thin and flattened; that of a cuboidal cell is spherical; and a columnar cell nucleus is elongated from top to bottom and is usually located close to the cell base. Nuclear shape is an important structural characteristic to keep in mind ...
SUSPENSOR DEVELOPMENT IN GAGEA LUTEA (L.) KER GAWL
... forms a compaction of actin material is also present in older basal cells (4-cell proembryo stage, Fig. 3a,b). Microfilament bundles arranged circumferentially around the nucleus are visible in the basal cell cytoplasm. The actin skeleton elements are oriented transversely to the micropylarchalazal ...
... forms a compaction of actin material is also present in older basal cells (4-cell proembryo stage, Fig. 3a,b). Microfilament bundles arranged circumferentially around the nucleus are visible in the basal cell cytoplasm. The actin skeleton elements are oriented transversely to the micropylarchalazal ...
Sorting of plant vacuolar proteins is initiated in the ER
... (Bin, amphiphysin, Rvs) domain that enables sensing of membrane curvature, and thus drives the formation of transport carriers (Cullen, 2008; Lemmon, 2008). The above paradigm for post-Golgi protein trafficking has often been used as a guideline for plant scientists in discussions on vacuolar protei ...
... (Bin, amphiphysin, Rvs) domain that enables sensing of membrane curvature, and thus drives the formation of transport carriers (Cullen, 2008; Lemmon, 2008). The above paradigm for post-Golgi protein trafficking has often been used as a guideline for plant scientists in discussions on vacuolar protei ...
The Pathogenic Fungus Paracoccidioides brasiliensis Exports
... FIG. 1. (A to C) TEM images of a P. brasiliensis yeast cell (A) and vesicle pellets from two different preparations (B and C). In panel A, vesicles are seen at the surface (arrows) outside of the cell wall (CW). (D) Detail of the boxed area of the vesicle shown in panel C allowing visualization of a ...
... FIG. 1. (A to C) TEM images of a P. brasiliensis yeast cell (A) and vesicle pellets from two different preparations (B and C). In panel A, vesicles are seen at the surface (arrows) outside of the cell wall (CW). (D) Detail of the boxed area of the vesicle shown in panel C allowing visualization of a ...
Myofibrillogenesus in Skeletal Muscle Cells
... myofibrils. Nevertheless, the mature myofibrils retain a less extensive association with the cell surface via the indentations of the surface membranes, that is transverse tubules, at their Z-bands or A-I bands. Myofibrillogenesis in a Mouse Cell Line from Skeletal Muscle How general is this premyofib ...
... myofibrils. Nevertheless, the mature myofibrils retain a less extensive association with the cell surface via the indentations of the surface membranes, that is transverse tubules, at their Z-bands or A-I bands. Myofibrillogenesis in a Mouse Cell Line from Skeletal Muscle How general is this premyofib ...
Cytoskeletal control of plant cell shape: getting the fine points
... penetrate into the extreme tip [35]. A wide variety of models have been proposed to explain what F-actin might do to promote tip growth besides driving long-range vesicle transport via cytoplasmic streaming (reviewed [28,29]). Among these, the most widely favored ideas seem to be that actin ®lament ...
... penetrate into the extreme tip [35]. A wide variety of models have been proposed to explain what F-actin might do to promote tip growth besides driving long-range vesicle transport via cytoplasmic streaming (reviewed [28,29]). Among these, the most widely favored ideas seem to be that actin ®lament ...
The ARP2/3 complex: giving plant cells a leading edge
... Cells in layers underlying the epidermis might also display subtle defects but these have been more difficult to observe and quantify due to the compensating influences between neighboring cells present on all sides. Epidermal cells displayed clear phenotypes mostly on the side exposed to the extern ...
... Cells in layers underlying the epidermis might also display subtle defects but these have been more difficult to observe and quantify due to the compensating influences between neighboring cells present on all sides. Epidermal cells displayed clear phenotypes mostly on the side exposed to the extern ...