Biology Cell Unit of Life part 14 (Nucleus: Chromosomes, Classifications) CBSE class 11 XI Biology Cell Unit of Life part 14 (Nucleus: Chromosomes, Classifications, functions) CBSE class 11 XI. By: ExamFearVideos … Continue reading →

Biology Cell Unit of Life part 18 (Lysosomes) CBSE class 11 XI Biology Cell Unit of Life part 18 (Lysosomes) CBSE class 11 XI. By: ExamFearVideos … Continue reading →

excerpt from Introduction to Human Behavioral Biology Robert Sapolsky Catagories? Buckets? -ologies? What is behavior and what does it occur? Is there really only one answer? Has your bucket become over-important? Oris behaviorism all we really need? From... By: musicofnote1 … Continue reading →

December 28, 2014 Credit: Thinkstock Brett Smith for redOrbit.com Your Universe Online Biologists have long-wondered what causes a rapidly-growing cell to split: The size it reaches? Or the length of time its been growing? According to a new report in the journalCurrent Biology, a team of American researchers has finally gotten to the bottom of this mystery. How cells control their size and maintain stable size distributions is one of the most fundamental, unsolved problems in biology, said study author Suckjoon Jun, an assistant professor of physics and molecular biology at UC San Diego. Even for the bacteriumE. coli, arguably the most extensively studied organism to date, no one has been able to answer this question. In the study, researchers created a small device to separate and physically adjust individual genetic components. It turned out that we can use this device to also follow the life history of thousands of individual bacterial cells for hundreds of generations, Jun said. We looked at the growth patterns of the cells very, very carefully, and realized that there is something really special about the way the cells control their size. In our study, we monitored the growth and division of hundreds of thousands … Continue reading →