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Category Archives: Biology

What Cancer Cells Don't Want Us to Know – Video

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What Cancer Cells Don #39;t Want Us to Know
A talk by Galit Lahav, PhD, Associate Professor of Systems Biology, Harvard Medical School. Harvard Medical School MED-EDs are a series of short, thought-provoking presentations by renowned HMS faculty, alumni, and leadership volunteers built to share and inspire new ideas.From:harvardmedicalschoolViews:1 0ratingsTime:17:36More inScience Technology

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What Cancer Cells Don't Want Us to Know - Video

Standing on the Threshold: The Promise of Stem Cell Science – Video

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Standing on the Threshold: The Promise of Stem Cell Science
A talk by Douglas A. Melton, PhD, Xander University Professor of Stem Cell and Regenerative Biology, Harvard; Co-Chair, Department of Stem Cell and Regenerative Biology, Harvard Medical School. Harvard Medical School MED-EDs are a series of short, thought-provoking presentations by renowned HMS faculty, alumni, and leadership volunteers built to share and inspire new ideas.From:harvardmedicalschoolViews:0 0ratingsTime:20:19More inScience Technology

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Standing on the Threshold: The Promise of Stem Cell Science - Video

Preparing for gel electrophoresis (Gonzaga University Biology 105 Lab) – Video

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Preparing for gel electrophoresis (Gonzaga University Biology 105 Lab)
This is the procedure described in Gonzaga University #39;s Biology 105 Lab Manual under Dissect, part C, Restrict and Analyze Phage Genomic DNAFrom:Gonzaga BiologyViews:3 0ratingsTime:07:28More inScience Technology

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Preparing for gel electrophoresis (Gonzaga University Biology 105 Lab) - Video

Fairy-wren babies need password for food

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Fairy-wren babies need password for food. Credit: Colombelli-Negrel et al., Current Biology

It's always a good idea to listen to your mother, but that goes double for baby fairy-wrens even before they are hatched.

If those fairy-wren babies want to be fed, they need to have a passworda single unique notetaught to them by their mothers from outside the egg. The nestlings incorporate that password right into their begging calls, according to researchers who report their discovery online on November 8 in Current Biology.

This remarkable example of prenatal learning is an adaptation that apparently allows fairy-wren parents to discriminate between their own babies and those of parasitic cuckoos who have invaded their nests. Females also teach their mate and any helpers the password by singing it to them in a "solicitation song" performed away from the nest.

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This is a fairy-wren incubation call. Credit: Colombelli-Negrel et al., Current Biology

Kleindorfer and her colleagues originally stumbled onto this scheme when they noticed something unexpectedly odd while studying nest predators and alarm calls: superb fairy-wren mothers calling to their unhatched eggs. The researchers later found that fairy-wren nestlings' one-note begging calls differed from one nest to another. The researchers' key breakthrough was the realization that the unique element in each female's incubation call was the basis of the begging call of her brood. In other words, it was a password.

Cross-fostering experiments, in which clutches of eggs were swapped between nests, showed that the nestlings produced begging calls that matched their foster mothers, not their biological mothers, evidence that the passwords were indeed learned. The researchers found they could also prevent attending parents from feeding their nestlings by placing a loudspeaker under the nest that played the wrong begging call.

The findings show that even traits that appear innate may actually be learned. Such an ability could have real evolutionary implications for the superb fairy-wrens, and more broadly.

"We show that females that guard and teach the embryo could increase the transmission efficacy of female cultural traits," Kleindorfer explained. "In systems with uniparental care, caretakers of embryos will have more opportunity to pass on female memes, or 'messages,' to the embryo." And, she added, that means that mothers have a special ability to transmit not just genes to the next generation, but also memes.

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Fairy-wren babies need password for food

Pomona Remembers Biology Professor Gene Fowler

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Gene Fowler, a biology professor at Pomona College and one of the pioneers in establishing Pomona's environmental analysis program, died Nov. 1 at Pomona Valley Hospital Medical Center after suffering an illness.

Fowler, known as Doc Fowler tohis colleagues and friends, joined the Pomona faculty in 1993 and taught many courses in biology. Conservation Biology and Comparative Endocrinology were among his most popular courses.

Fowler had a half-position at Pomona and taught courses at other schools as well.

Known for his commitment to the EA program at Pomona, he was instrumental in the establishment of the EA study abroad program at the University of Cape Town in South Africa.

Richard Hazlett, a geology professor at Pomona, worked closely with Fowler in the advancement of the EA program.

Gene was certainly a human being of great conviction when it came to conservation and the need to educate people about the natural world, Hazlett said. I think he felt most alive and readily interested studying the environment, whether that took the form of monitoring Argentinian penguins or leading students on his spectacular trips to explore pollution issues, migratory birds and natural history around the Salton Sea.

Fowler's research involved the behavioral endocrinology of birds and mammals. He studied the influence of sex and stress hormones on reproductive behavior and success. For his dissertation, he studied the behavior ofMagellanic penguinsand their reproductive and stress endocrinology.

From 1995 to 2001, he was the director of the Robert J. Bernard Biological Field Station of the Claremont Colleges. After 2001, he remained involved in the Bernard Field Station and was the chair of the advisory committee.

Biology professor Nina Karnovsky met Fowler in the early 1990s because of their similar research interest in penguins.

He had such incredible knowledge of so many topics. You could ask him a question about anything, and he would have the answer, Karnovsky said. He knew so much about the local ecology around here. It was incredibly impressive that he could recall all of this information.

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Pomona Remembers Biology Professor Gene Fowler

Discussion Panel: Unmuzzled: The need for vocal aquatic scientists in Canada (4 of 9) – Video

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Discussion Panel: Unmuzzled: The need for vocal aquatic scientists in Canada (4 of 9)
Check out this panel discussion that was held on October 24th, 2012 at the University of Toronto to mobilize the aquatic science community to speak out about recent changes in federal environmental laws and cuts to government science programs, such as the world-renown Experimental Lakes Area. Panelists included: Ms. Laura Bowman (Environmental Lawyer), Dr. Ken Minns (Research Scientist, Fisheries Oceans Canada (retired)), Mr. Tony Maas (Freshwater Director, World Wildlife Fund -- Canada), Dr. Norman Yan (Professor of Biology, York University), Dr. Donald Jackson (Co-Editor-in-Chief, Canadian Journal of Fisheries and Aquatic Sciences) and Ms. Diane Orihel (Director, Coalition to Save ELA). The event was co-organized by Mr. Dak de Kerckhove and Ms. Diane Orihel.From:SaveTheELAViews:0 0ratingsTime:14:54More inScience Technology

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Discussion Panel: Unmuzzled: The need for vocal aquatic scientists in Canada (4 of 9) - Video

Introduction to Optical Imaging for Investigating Cancer Biology and Relevant Pathways – Video

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Introduction to Optical Imaging for Investigating Cancer Biology and Relevant Pathways
Recently, near-infrared and red fluorescent probes have enabled significant advances in understanding the role of proteins and enzymes in tumor biology in-vivo. During this webinar, we will show how newly discovered genetically encoded reporters can aide in-vivo imaging, as well as provide examples of how to utilize these probes to better understand metastatic processes. In addition, we will discuss how targeted probes can help researchers understand not only where a tumor resides, but what extracellular proteins are expressed in the context of a living animal. Furthermore, we will discuss how both extracellular enzymatic activity, such as MMP, and intracellular proteases, such as caspases 3 or 7, can be successfully imaged in-vivo. Finally, we will cover how in-vivo imaging can aide in the drug discovery and drug delivery through the tracking and optimization of peptide and nanoparticles delivery.From:BrukerBioSpin PCIViews:0 0ratingsTime:37:14More inPeople Blogs

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Introduction to Optical Imaging for Investigating Cancer Biology and Relevant Pathways - Video

Slender's Woods (1/?) – Nature

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Slender #39;s Woods (1/?) - Nature Biology - FearPlay
Submit your theories for upcoming episodes! 🙂 Wherein we cover the risks of the forest, the gifts of animal biology and the dangers of human physiology. Slender #39;s Woods: http://www.moddb.com "The story is about a man who decides to move into a house deep in the woods for a week. The man hears strange noises outside the house one night and decided to check it out. The story will have twists and sudden moments to make you more interested in solving the mystery." --------- Intro Music: Bent Broken - Royalty Free Music - incompetech.comFrom:deaddoll00Views:2 2ratingsTime:13:29More inGaming

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Slender's Woods (1/?) - Nature

The Cognitive Science of Religion (Part 2) – Video

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The Cognitive Science of Religion (Part 2)
For more on this event, visit: bit.ly For more on the Berkley Center, visit: berkleycenter.georgetown.edu May 3, 2011 | Is religious experience intrinsically related to human cognition? In recent decades this question has prompted significant academic interest from a wide range of scholarly disciplines including anthropology, biology, philosophy, and psychology. The result of this research is an emerging consensus among scientists that the mind has a natural bias towards religious ideas. The human inclination towards religion, if true, would have consequences for the treatment of religion in public affairs. Cognitive psychologist Justin Barrett has been a leading figure in the exploration of this question and spoke to Religious Freedom Project on May 4, 2011. Richard Sosis, a prominent scholar in the field of evolutionary anthropology offered a formal response. Following their interventions, a general discussion ensued between invited scholars representing a diverse set of academic fields.From:berkleycenterViews:1 0ratingsTime:49:14More inEducation

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The Cognitive Science of Religion (Part 2) - Video

Multimodal Optical and Nuclear Imaging – Video

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Multimodal Optical and Nuclear Imaging
Preclinical applications of biomedical imaging are rapidly expanding as tools for molecular biology research and diagnostic contrast agent development. As no single imaging modality can provide a full picture of the complex biology of disease, more researchers are turning to multimodality imaging. The availability of contrast agents for optical and nuclear imaging has never been higher, including both genetically engineered reporters and synthetic compounds. In this webinar, we will discuss the principles of planar optical imaging and scintigraphy in the context of imaging in animal models. These techniques are economical and simple, allowing facile data co-registration. We will review multimodal imaging strategies with respect to laboratory research and clinical applications.From:BrukerBioSpin PCIViews:0 0ratingsTime:36:39More inScience Technology

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Multimodal Optical and Nuclear Imaging - Video

Is YouTube Making Us Smarter? | Idea Channel | PBS – Video

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Is YouTube Making Us Smarter? | Idea Channel | PBS
Did you know there #39;s a place where you can learn just about anything you #39;d like? It #39;s true! It #39;s called YOU TUBE!!! Sure, YouTube has hundreds of thousands of hours of deliciously time-wasting content, but it #39;s a whole lot more than just a black hole of pet videos and FAIL clips. If you know where to go, YouTube has some of the best educational content on the planet! And although watching Kahn Academy all day might be a bit dry, the creativity of YouTube creators has allowed "education" to be transformed in variety of amazing and engaging ways. YouTube probably won #39;t replace schools anytime soon, but it #39;s a pretty rad alternative. So time to stop watching cat videos and get your learn on! Let us know what sorts of crazy ideas you have, about this episode and otherwise: Tweet at us! @pbsideachannel (yes, the longest twitter username ever) Email us! pbsideachannel [at] gmail [dot] com Hosted by Mike Rugnetta (@mikerugnetta) Made by Kornhaber Brown (www.kornhaberbrown.com) Youtube People Brady Haran Numberphile http://www.youtube.com Deep Sky Videoswww.youtube.com Vsauce http://www.youtube.com http://www.youtube.com http://www.youtube.com Smarter Everyday http://www.youtube.com ViHart http://www.youtube.com ASAP Science http://www.youtube.com CGPGrey http://www.youtube.com CrashCourse http://www.youtube.com MinutePhysics http://www.youtube.com Sci Show http://www.youtube.com Veritasium http://www.youtube.com Teachers with YouTube Channels Amor Sciendi http://www.youtube.com Bozeman Biology http://www.youtube.com Keith Hughes http://www.youtube.com More assets: ocw.mit.edu www ...From:pbsideachannelViews:2124 1158ratingsTime:08:04More inEducation

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Is YouTube Making Us Smarter? | Idea Channel | PBS - Video

ATPtoADP – Video

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ATPtoADP
A short explanation that resolves the seemly contradictory statements "breaking the high energy phosphate bond on ATP releases energy" (learned in biology classes), and "All bond breaking costs energy" (as taught in chemistry classes).From:kcousins47Views:0 0ratingsTime:02:53More inEducation

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ATPtoADP - Video


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