The Loom Your hands are, roughly speaking, 360 million years old. Before then, they were fins, which your fishy ancestors used to swim through oceans and rivers. Once those fins sprouted digits, they could propel your salamander-like ancestors across dry land. Fast forward 300 million years, and your hands had become fine-tuned for manipulations: your lemur-like ancestors used them to grab leaves and open up fruits. We know a fair amount about the transition from fins to hands thanks to the moderately mad obsession of paleontologists, who venture to inhospitable places around the Arctic where the best fossils from that period of our evolution are buried. By comparing those fossils, scientists can work out the order in which the fish body was transformed into the kind seen in amphibians, reptiles, birds, and mammals–collectively known as tetrapods. A team of Spanish scientists has provided us with a glimpse of that story. Both fins and hands get their start in embryos. The effect was dramatic.
Tree of Life Web Project AP Biology Investigative Labs Supplement to the first printing: This Supplement to the First Printing of the lab manual includes updated URLs, corrections, clarifications, sample data tables for Investigation 7, and an updated version of the AP Biology Equations and Formulas appendix. The second printing of the Teacher Manual, available for download below, incorporates these changes. The second printing of the Student Manual, available through the College Board store, has also been updated. Each PDF below contains the teacher edition (blue banner), followed by the student edition (red banner). Click on a big idea to download all the labs associated with that section. The teacher edition and student edition can also be purchased from the College Board Store. You may download the second printing of the full AP Biology Teacher manual (.pdf/19.2MB), which includes the Student manual. Many files on AP Central are saved in Adobe® PDF format.
MOLO - Proteins: From Sequence to Structure Overview By working their way through a series of models of polymers of increasing complexity, students can recognize forces responsible for protein's 3D shape. They compare folding of the same chain of amino acids in water and lipids, experiment with different sequences of amino acids and learn how charges, polar and non-polar amino acids affect the shape of a protein. Activities Objectives and Goals Students will be able to: construct polymers from monomers;identify and manipulate in models the key forces on protein shaping (charge, lipid or water environment);interpret protein structure in a variety of representations;connect problems in protein structure with disease. Standards THE LIVING ENVIRONMENT: CELLS - Most cells function best within a narrow range of temperure and acidity. THE LIVING ENVIRONMENT: CELLS - The genetic information encoded in DNA molecules provides insructions for assemblng protein molecules.
AP Biology Labs and Handouts « School Without Walls Biology Here you will find the labs and handouts for AP biology. Many of the links will be to external sites. Credit is given to original authors when possible. Online lab resources LabBench hosts online labs with prelabs. Online reading guides and notes Lynn Miriello has put together the reading guides we will be using in class. Explore Biology | AP Biology Teaching & Learning Resources Welcome! Here you will find links to my lecture presentations. These are posted just before or right after the class lecture.Students: I have linked directly to the Powerpoint files so you can download them and view them at home. Introductions Welcome to AP Biology! AP Biology is a rigorous, demanding, stimulating, rewarding course. Biology is an ever-expanding body of knowledge and there are too many details to memorize it all, so we need to create a framework of over-arching themes upon which to organize new knowledge. Unit 1 Evolution A Darwinian view of life! Our introduction to Darwin the man & the scientist, his ideas, and the inspiration for them. Let's delve deeper into how natural selection acts on individuals. What evidence supports this Darwinian view of change over time? Darwin's theory of evolution by natural selection gave scientists the ability to craft testable hypotheses. Natural selection acts on individuals, but populations evolve. How do new species arise? Unit 3 Ecology