Cytographics (Firm)
Publisher
Cytographics
Pub. Date
2016.
Language
English
Description
Mitosis requires cells to organize numerous jumbled chromosomes and then separate them with absolute fidelity into two equal groups. How this extraordinary process is accomplished is still poorly understood.. This video reveals the events of mitosis at a level of detail usually seen only in research laboratories. In addition, two Appendices show mitosis in a classical system, the diatom cell, and some experiments on living cells that illustrate why...
Publisher
Cytographics
Pub. Date
2016.
Language
English
Description
The Volvocales and Chlorococcales share a common ancestry from a cell type exemplified by Chlamydomonas. Using live cells, this video shows how simple evolutionary trends working on Chlamydomonad ancestors have generated diversity and complexity.. In Volvocalean evolution, unicellular ancestors became multicellular (e.g., Volvox) by daughter cells adhering after division. Concurrently, they evolved various advanced characters (e.g., differentiation...
Publisher
Cytographics
Pub. Date
2016.
Language
English
Description
Living Cells features greatly expanded coverage of subject matter and extensive additional footage when compared to the original video tape of 1992. The vivid, high-magnification images introduce students to a variety of cells, cellular activities, and subcellular organelles. The video is organized into 24 chapters on specific topics such as actin, microtubules, and flagella.. The Living Cells video offers a most convenient way of accessing beautiful...
Publisher
Cytographics
Pub. Date
2016.
Language
English
Description
For convenience, biologists divide living organisms into five "Kingdoms": the Monerans (bacteria and cyanobacteria), Protists, Fungi, Plants, and Animals. The Kingdom Protista includes a vast array of tiny eukaryotic cells that lead complex and extraordinary lives far from the eyes of most humans; a dedication to microscopy is vital to see them in all their splendor. This video is a unique resource introducing the viewer to a considerable range of...
Publisher
Cytographics
Pub. Date
2000.
Language
English
Description
Reproduction in the red algae is unique. No flagellated stages are ever formed, and it is generally assumed that the various reproductive spores are inert. This video demonstrates that spores in many species are actively motile, either by gliding or amoeboid activity. This limited power of movement may turn out to be of considerable significance in survival strategies (e.g. dispersion, optimization of a germination site).. Sexual reproduction is also...
Publisher
Cytographics
Pub. Date
2003.
Language
English
Description
Diatoms are an extraordinarily successful group of organisms and their many thousands of species have diversified and specialized so as to occupy every environmental niche. Part of their success derives from their unique protective cell walls, beautifully elaborate structures made of pure silica. However, living inside walls made of this rigid, refractory material creates many problems. Just how diatoms circumvent these problems provides the major...
Publisher
Cytographics
Pub. Date
2004.
Language
English
Description
The Oedogoniales are remarkable filamentous green algae. Their method of cell elongation is unique, utilizing a donut-shaped ring of soft wall material which is stretched to form the new daughter cell. While Oedogonium is a simple filament, the related Bulbochaete and Oedocladium are branched and Bulbochaete differentiates long hair cells. The zoospore is large and multiflagellated. Sexual reproduction is oogamous and either "macrandrous" or "nannandrous."...
Publisher
Cytographics
Pub. Date
2016.
Language
English
Description
An inspiring and challenging 20 minute video for high school or university biology students. This video starts by emphasizing the central importance of cells in life, and that living cells can only arise from other living cells by cell division. After distinguishing mitosis (nuclear division) from cytokinesis (cell division), several animal cells are shown undergoing mitosis and a 3D animation shows how the mitotic spindle is assembled. Chromosomes...
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