Category Archives: Biology

My Biology Project Hope You Like it and then in the first part I talk about how transcription and translation of DNA and mRNA is transcriptesd to mRNA then I talk about to the specialized cell going to carry... By: Theblondkid … Continue reading →

A Fatty Acid used to Decode Weight Control Obesity can be described as an excess of fat leading to metabolic diseases and adipose tissue has a pivotal role in obesity and its related complications. Dietary management is the conventional strategy to promote weight loss and improve health, new research suggests the central role of myristoleic acid - a minor fatty acid not found in food - could provide the answer to the success of that New Year's Resolution. Emilie Montastier, Nathalie Villa-Vialaneix, Sylvie Caspar-Bauguil, Nathalie Viguerie and colleagues from the University of Toulouse developed a method to understand how molecular signatures of adipose tissue respond to weight control. The study, publishing this week in PLOS Computational Biology, uses a data-driven approach to jointly analyze the lipidome, gene expression and phenotype from 135 obese women who took part in one of the most comprehensive dietary programs worldwide. The trial induced weight loss through an 8-week low calorie diet and a subsequent 6-month ad libitum weight maintenance diet. A comprehensive insight of adipose tissue response during and after calorie restriction might improve obesity management. To figure out how weight change impacts the intrinsic complexity of adipose tissue biology the authors investigated the … Continue reading →

IMAGE:This is a loggerhead sea turtle nesting in the Archie Carr National Wildlife Refuge in Melbourne Beach, Florida. view more Credit: J. Roger Brothers Adult sea turtles find their way back to the beaches where they hatched by seeking out unique magnetic signatures along the coast, according to new evidence reported in the Cell Press journal Current Biology on January 15. "Sea turtles migrate across thousands of miles of ocean before returning to nest on the same stretch of coastline where they hatched, but how they do this has mystified scientists for more than fifty years," says J. Roger Brothers of the University of North Carolina, Chapel Hill. "Our results provide evidence that turtles imprint on the unique magnetic field of their natal beach as hatchlings and then use this information to return as adults." While earlier studies have shown that sea turtles use the Earth's magnetic field as a guide while out at sea, it has remained unclear whether adult turtles also depend on magnetic features to recognize and return to the nesting sites chosen by their mothers before them, the researchers explain. Several years ago, UNC's Kenneth Lohmann, the co-author of the new study, proposed that animals including … Continue reading →

How bar-headed geese cope with flying in relatively low-density mountain atmosphere as they migrate across the Tibetan Plateau and Himalaya Mountains Roller Coaster migratory flights of geese give unique insights into bird physiology and biomechanics at high altitudes. An international team of scientists studying the migratory biology of bar-headed geese (Anser indicus), during their high altitude flights across the Tibetan plateau and Himalayan Mountains, have revealed how these birds cope with flying in the relatively low-density mountain atmosphere. Dr. Charles Bishop of Bangor University led the study, along with colleagues Robin Spivey and Dr. Lucy Hawkes (now at University of Exeter), Professor Pat Butler from the University of Birmingham, Dr. Nyambayar Batbayar (Wildlife Science and Conservation Center of Mongolia), Dr. Graham Scott (McMaster University) and an international team from Canada, Australia, Germany and the USA. The study used custom-designed data loggers to monitor pressure-derived altitude, body accelerations and heart rate of geese during their southern migration from their breeding grounds in Mongolia to their wintering grounds in South-eastern Tibet or India. Historically, it was commonly assumed that bar-headed geese would fly to high altitudes relatively easily and then remain there during their flights, possibly benefitting from a tailwind. Instead, the … Continue reading →

New methods for analysing malaria transmission can estimate the best time of year to carry out campaigns such as mass drug treatment and spraying of houses with insecticide. In a study publishing this week in PLOS Computational Biology, Jamie Griffin of Imperial College London uses methods that calculate the effect of interventions against infectious diseases when conditions change seasonally. The study finds that for malaria in Africa the best time of year for mass drug administration is in the low season, whereas the best time for house spraying, or a vaccine that reduces infection rates, is just before the high season. An important summary of the dynamics of an infectious disease is the reproduction number, defined as the average number of secondary infections that would result from each infection if everyone were susceptible. The study's author shows how to find the reproduction number, and the number's change due to interventions when the disease has seasonal variation or the intervention effects change over time. It has been estimated that in some parts of Africa the reproduction number needs to be reduced over 1000-fold in order to locally eliminate malaria. The results of this study can help us to understand how to … Continue reading →

Biology Cell Cycle Cell Division part 11 (Meiosis: Prophase 1) CBSE class 11 XI Biology Cell Cycle Cell Division part 11 (Meiosis: Prophase 1) CBSE class 11 XI. By: ExamFearVideos … Continue reading →

Smiley Biology Classes THis the STEM Biology Classes at the STEM Academy in San Antonio TX. By: LANE SMILEY … Continue reading →

Euglena Video Molecular Biology By Angela and Melody Period 6. By: melody QUINTANA … Continue reading →

Biology final By: Georgia Kenderova … Continue reading →

Molecular biology, JFK High School, December 2014, by Maya Vargas and Gabriella Griffe via YouTube Capture. By: GG … Continue reading →