Lipids. Lipids The lipids are a large and diverse group of naturally occurring organic compounds that are related by their solubility in nonpolar organic solvents (e.g. ether, chloroform, acetone & benzene) and general insolubility in water. There is great structural variety among the lipids, as will be demonstrated in the following sections. You may click on a topic listed below, or proceed page by page. Fats, Oils, Waxes & Phospholipids 1. The common feature of these lipids is that they are all esters of moderate to long chain fatty acids. The higher melting points of the saturated fatty acids reflect the uniform rod-like shape of their molecules. Two polyunsaturated fatty acids, linoleic and linolenic, are designated "essential" because their absence in the human diet has been associated with health problems, such as scaley skin, stunted growth and increased dehydration. 2.
Very small amounts of these surfactants dissolve in water to give a random dispersion of solute molecules. 3. 4. 5. Plant Divisions.ppt. The Immortal Life of Henrietta Lacks. With Henrietta unconscious on the operating table…though no one asked if she wanted to be a donor—[Dr.] Wharton picked up a sharp knife and shaved two dime-sized pieces of tissue from Henrietta’s cervix.
. – The Immortal Life of Henrietta Lacks, pg. 33 Informed consent is a legal procedure to ensure that a patient or client knows all of the risks and costs involved in a treatment. A Guide to Understanding Informed Consent (National Cancer Institute) Making a decision about participating in a research study involves understanding the potential risks and benefits as well as your rights and responsibilities. Related News Stories U.S. scientists knew 1940s Guatemalan STD studies were unethical, panel finds (Washington Post) August 29, 2011. Classroom Activities. Biology Tips Biology Reading Skills. Tree of Life Web Project. The Tree of Life Web Project (ToL) is a collaborative effort of biologists and nature enthusiasts from around the world. On more than 10,000 World Wide Web pages, the project provides information about biodiversity, the characteristics of different groups of organisms, and their evolutionary history (phylogeny).
Each page contains information about a particular group, e.g., salamanders, segmented worms, phlox flowers, tyrannosaurs, euglenids, Heliconius butterflies, club fungi, or the vampire squid. ToL pages are linked one to another hierarchically, in the form of the evolutionary tree of life. Starting with the root of all Life on Earth and moving out along diverging branches to individual species, the structure of the ToL project thus illustrates the genetic connections between all living things. Plant Biology. Cellular Biology. Genetics. Genetics includes the study of heredity, or how traits are passed from parents to offspring. The topics of genetics vary and are constantly changing as we learn more about the genome and how we are influenced by our genes. Inheritance Mendel & Inheritance – powerpoint presentation covering basics of genetics Simple Genetics Practice – using mendelian genetics and punnett squares Genetic Crosses with two traits – basic crosses, uses Punnet squaresGenetic Crosses with two traits II – basic crossses, uses Punnett squaresDihybrid Crosses in Guinea Pigs (pdf) – step through on how to do a 4×4 punnett square Codominance & Incomplete Dominance – basic crosses involving codominance X-Linked Traits – practice crosses that involve sex-linkage, mainly in fruitflies The Genetics of Blood Disorders – a worksheet with genetics problems that relate to specific disorders: sickle cell anemia, hemophilia, and Von Willebrand disease.
Human Genetics Presentation Chromosomes Modeling Chromosomal Inheritance. Plant%20Divisions.