http://biology.videolecture.ru/ Видеокаталог портала ИНФОРМИСТ Tue, 13 Nov 2012 22:44:24 +0300 60 Tue, 13 Nov 2012 22:44:24 +0300 http://biology.videolecture.ru/video/w7764/
Старый учебный фильм для ставки на http://fullbiology.ucoz.ru/ ]]> Tue, 13 Nov 2012 22:43:17 +0300 http://biology.videolecture.ru/video/w7763/
Размножение мхов ]]> Tue, 13 Nov 2012 22:41:43 +0300 http://biology.videolecture.ru/video/w7761/
Старый учебный фильм для ставки на http://fullbiology.ucoz.ru/ ]]> Sat, 29 Sep 2012 15:57:02 +0300 http://biology.videolecture.ru/video/w4153/
Captions done by: http://www.youtube.com/user/lizzashley89 ]]> Sat, 29 Sep 2012 15:56:02 +0300 http://biology.videolecture.ru/video/w4152/
This video looks at how soybean plants affect their soil environment to increase mineral availability, specifically in respect to iron. ]]> Sat, 29 Sep 2012 15:55:13 +0300 http://biology.videolecture.ru/video/w4151/
Paul Andersen explains how nutrients and water are transported in plants.  He begins with a brief discussion of what nutrients are required by plants and where they get them.  He shows you dermal, vascular and ground tissue in monocot and dicot roots, stems and leaves.  He then explains how water is pulled up a tree in xylem and how sugar is pushed in a plant through phloem. ]]> Sat, 29 Sep 2012 15:54:04 +0300 http://biology.videolecture.ru/video/w4149/
This is a short video I recorded in my garden. I went out to take pictures of flowers, but after realizing the bees were not camera shy - I decided to record this video. Enjoy and sorry if the quality is not that good, although it is in HD, I used a TZ10 to capture it. ]]> Sat, 29 Sep 2012 15:53:37 +0300 http://biology.videolecture.ru/video/w4148/
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              9700061777 ]]> Mon, 03 Sep 2012 10:36:37 +0300 http://biology.videolecture.ru/video/w3705/
They have formidable jaws, sticky leaves and killer thorns. Woe betide the insect that comes too near ]]> Mon, 03 Sep 2012 10:32:51 +0300 http://biology.videolecture.ru/video/w3703/
About herpesvirus ]]> Mon, 03 Sep 2012 10:30:51 +0300 http://biology.videolecture.ru/video/w3702/
This is the best animation I've found for an introduction to the mechanism of reverse transcription. Although simplistic, the message is well defined (courtesy of HHMI). As this is my current area of research, I'll try to follow with retrotransposons (when I understand them better). ]]> Mon, 03 Sep 2012 10:30:29 +0300 http://biology.videolecture.ru/video/w3701/
The example used is the HIV Lentivirus. This video does a great job describing "complex" retrovirus transcription in a visually appealing way that is sufficient in detail for upper level coursework and possibly graduate coursework.
* Modes of action for some anti-viral drugs are also described.

NOTE:  The viral genome in the form of DNA stays in the cell's chromosome! This is the predominant reason for the persistence of retroviral infections. ]]> Mon, 03 Sep 2012 10:29:51 +0300 http://biology.videolecture.ru/video/w3700/
piranha.dl facebook site: http://www.facebook.com/home.php?#!/pages/piranhadl-3D/131721586891915 ]]> Mon, 03 Sep 2012 10:29:22 +0300 http://biology.videolecture.ru/video/w3699/
yea... ]]> Mon, 03 Sep 2012 10:27:38 +0300 http://biology.videolecture.ru/video/w3698/
Journey inside the human cell ]]> Mon, 03 Sep 2012 10:27:17 +0300 http://biology.videolecture.ru/video/w3697/
This years GE Healthcare IN Cell Image competition winners were announced at the High Content Analysis (HCA) Conference in San Francisco, USA, last week. Each of the three regional winners, from Asia, Europe and North America, has won a trip to New York City in March 2010 to see their images shown on NBCs high-definition TV screen in Times Square. For more information, please visit http://newsroom.gehealthcare.com/ ]]> Mon, 03 Sep 2012 10:16:18 +0300 http://biology.videolecture.ru/video/w3688/
Volvox is a genus of chlorophytes, a type of green algae. It forms spherical colonies of up to 50,000 cells. They live in a variety of freshwater habitats, and were first reported by Antonie van Leeuwenhoek in 1700. Volvox developed its colonial lifestyle 200 million years ago. ]]> Mon, 03 Sep 2012 10:15:28 +0300 http://biology.videolecture.ru/video/w3687/
The video shows a colony of approximately 100 ?m long of genus Eudorina composed by 32 vegetative by-flagellated cells. The flagella (cellular hair-like protuberances 60 ?m long) in movement are clearly visible. Video produced by Microvistas: Dr. Jos? Mar?a G?mez G?mez-OAS-BioAStronomy Group, Segurilla (Spain). ]]> Mon, 03 Sep 2012 10:14:05 +0300 http://biology.videolecture.ru/video/w3686/
This is a heterotrophic euglenid, perhaps a Peranema sp., exhibiting metaboly in all its splendour. The cell might be slightly squashed or otherwise damaged, keeping the flagellate conveniently in one place. The clear vesicle near the base of the flagellum that grows and shrinks is the contractile vacuole, the flagellate's analogue of the animal secretory system. At the tail end are refractile starch granules used to store energy.

Metaboly is a form of cell movement that is most famously exemplified by ciliates, but also known in some other flagellates. It appears to be caused by the specific arrangement of microtubule (cell skeleton) bundles at the cell periphery, and greatly enhanced by the 'armour plates' of the euglenid surface, which is lined with long pellicle strips going from the flagellar insertion all the way to the tip of the 'tail' -- as the cell twists about, the strips slide against each other and result in this movement. Euglenids with fused pellicle strips, like Phacus, are incapable of metaboly. The function of this movement is unknown, and there may not be any in particular.

The hairy thing next to the euglenid is a badly mangled ciliate.

Freshwater, Apr 2011, Vancouver ]]>