UGC CSIR NET suggestions plant biology This CSIR NET suggestions on plant biology will help you to study NET topics and crack NET life sciences with guidance from Shomu's Biology. For more informa... By: Suman Bhattacharjee … Continue reading →

AP Biology Video Notes Cellular Respiration, Part B By: BIO STUFF … Continue reading →

Mobb Deep - Biology (Prod. By The Alchemist) 2014 New CDQ Dirty NO DJ Super producer The Alchemist celebrates his birthday by digging into the vault and releasing a new song entitled "Biology" featuring frequent collaborators, Mobb Deep. Sit back with a cold... By: PaperChaserDotCom … Continue reading →

cara's biology credit "photosynthesis rap/thrift shop" By: cara3566 … Continue reading →

There are smaller pieces that make up cells such as macromolecules and organelles. A protein is an example of a macromolecule while a mitochondrion is an example of an organelle. Cells can also connect to form larger structures. They might group together to form the tissues of the stomach and eventually the entire digestive system. However, in the same way that atoms are the basic unit when you study matter, cells are the basic unit for biology and organisms. In larger organisms, the main purpose of a cell is to organize. Cells hold a variety of pieces and each cell type has a different purpose. By dividing responsibilities among different groups of cells, it is easier for an organism to survive and grow. If you were only made of one cell, you would be very limited. You don't find single cells that are as large as a cow. Cells have problems functioning when they get too big. Also, if you were only one cell you couldn't have a nervous system, no muscles for movement, and using the internet would be out of the question. The trillions of cells in your body make your way of life possible. Plant cells are … Continue reading →

Molecular biology // is the branch of biology that deals with the molecular basis of biological activity. This field overlaps with other areas of biology and chemistry, particularly genetics and biochemistry. Molecular biology chiefly concerns itself with understanding the interactions between the various systems of a cell, including the interactions between the different types of DNA, RNA and protein biosynthesis as well as learning how these interactions are regulated. Writing in Nature in 1961, William Astbury described molecular biology as: "...not so much a technique as an approach, an approach from the viewpoint of the so-called basic sciences with the leading idea of searching below the large-scale manifestations of classical biology for the corresponding molecular plan. It is concerned particularly with the forms of biological molecules and [...] is predominantly three-dimensional and structuralwhich does not mean, however, that it is merely a refinement of morphology. It must at the same time inquire into genesis and function."[1] Researchers in molecular biology use specific techniques native to molecular biology but increasingly combine these with techniques and ideas from genetics and biochemistry. There is not a defined line between these disciplines. The figure above is a schematic that depicts one possible view of … Continue reading →

Marine biology is the scientific study of organisms in the ocean or other marine or brackish bodies of water. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy. Marine biology differs from marine ecology as marine ecology is focused on how organisms interact with each other and the environment, while biology is the study of the organisms themselves. A large proportion of all life on Earth exists in the ocean. Exactly how large the proportion is unknown, since many ocean species are still to be discovered. The ocean is a complex three-dimensional world[3] covering about 71% of the Earth's surface. The habitats studied in marine biology include everything from the tiny layers of surface water in which organisms and abiotic items may be trapped in surface tension between the ocean and atmosphere, to the depths of the oceanic trenches, sometimes 10,000 meters or more beneath the surface of the ocean. Specific habitats include coral reefs, kelp forests, seagrass meadows, the surrounds of seamounts and thermal vents, tidepools, muddy, sandy and rocky bottoms, and the … Continue reading →

PUBLIC RELEASE DATE: 27-Oct-2014 Contact: Shane Canning shane.canning@biomedcentral.com 44-203-192-2243 BioMed Central @biomedcentral A new idea about the origin of complex life turns current theories inside out. In the open access journal BMC Biology, cousins Buzz and David Baum explain their 'inside-out' theory of how eukaryotic cells, which all multicellular life - including us - are formed of, might have evolved. Scientists have long pondered the question of how simple "prokaryotic" cells, like bacteria, which are little more than a membrane-bound sack, evolved into more complex eukaryotic cells, which contain numerous internal membrane compartments. These compartments include the nucleus, which holds genetic information in the form of DNA; the endoplasmic reticulum, which shunts proteins and lipids around the cell; and mitochondria which act as the cell's powerhouse. The mitochondria also contain their own distinct DNA, which is one good indicator of their once having been separate organisms. The trouble is that no one has identified eukaryotic cells that are intermediate in complexity, making it much harder to know how they evolved. At present, the most widely accepted theory is that mitochondria derive from a bacterium that was engulfed by an archaeon (plural = archaea), a kind of prokaryote that looks similar … Continue reading →