Plants that Make Spores
There are ten basic divisions in the Plantae kingdom, and only 5 that are spore bearing. Spores are special cells used in asexual reproduction. Learn about the plants that make cells in this short clip. Examples and photos are provide for the mosses, liverworts, horsetails and ferns. (2:34)
Plant Examples of Asexual Reproduction
This short video is about plants that have not grown from seeds but are reproduced asexually. Some examples from the video include bulbs, liverworts, plants with cuttings, and strawberry plants with runners. Run time 02:56.
Liverworts, Mosses, and Ferns
This video gives a quick overview of some different types of spore-bearing plants. Dr. Matt von Konrat explains the reproduction of liverworts, mosses, and ferns to a high school group of students. Audio is poor but information is good. Run time 07:50
Peachtree Rock Heritage Preserve: The Longleaf Pine Ecosystem
Conservationists know that the Longleaf Pine Forests of the Southern U.S. consist of much more than just its trees. They are complete ecosystems of plants, animals and natural processes including fire, rain and soil mineralization. Estimates show that over the last century, longleaf pine ecosystems have dwindled to less than 3 percent. Once thought to be inexhaustible, these forests were exploited for their lumber and turpentine products. Today, restoring these habitats to pre-settlement conditi
Green Fluorescent Protein: Lighting Up Life - January 28, 2010
Martin Chalfie, chair and professor of biological sciences at Columbia University, shared the 2008 Nobel Prize in Chemistry with Osamu Shimomura and Roger Y. Tsien for the discovery and development of the green fluorescent protein (GFP). GFP has become a fundamental tool in cell biology, developmental biology, genetics, neurobiology and the medical sciences. It has permitted scientists to study damaged cells in Alzheimer’s disease, cancer, and genetic disorders. It also has many applications i
Green Fluorescent Protein: Lighting Up Life - January 28, 2010
Martin Chalfie, chair and professor of biological sciences at Columbia University, shared the 2008 Nobel Prize in Chemistry with Osamu Shimomura and Roger Y. Tsien for the discovery and development of the green fluorescent protein (GFP). GFP has become a fundamental tool in cell biology, developmental biology, genetics, neurobiology and the medical sciences. It has permitted scientists to study damaged cells in Alzheimer’s disease, cancer, and genetic disorders. It also has many applications i
26 - Learning from and Responding to Financial Crisis, Part II (Guest Lecture by Lawrence Summers)
In the second of his two lectures in honor of Arthur Okun, Professor Summers points out that real interest rates have been very low in the current subprime crisis. This indicates that the shock to the economy was more a financial breakdown shock than a disinflation shock. But financial breakdown shocks are not necessarily very harmful to the economy, so long as financial intermediation capital is not destroyed. In a financial crisis like the present one, financial firms are likely to take the st
21 - Forwards and Futures
Futures markets were started in Osaka, Japan in the 1600s to create an authoritative and meaningful market price for agricultural products, using standardized contracts. Since then, futures markets have been copied around the world to allow the hedging various future risks, financial and other. In the United States, the Chicago Mercantile Exchange and the Chicago Board of Trade have been the most popular futures trading markets. Although futures markets are changing and becoming more electronic,
05 - Insurance: The Archetypal Risk Management Institution
Insurance provides significant risk management to a broad public, and is an essential tool for promoting human welfare. By pooling large numbers of independent or low-correlated risks, insurance providers can minimize overall risk. The risk management is tailored to individual circumstances and reflects centuries of insurance industry experience with real risks and with moral hazard and selection bias issues. Probability theory and statistical tools help to explain how insurance companies use ri
03 - Technology and Invention in Finance
Technology and innovation underlie finance. In order to manage risks successfully, particularly long-term, we must pool large amounts of risk among many, diverse people and overcome barriers such as moral hazard and erroneous framing. Inventions such as insurance contracts and social security, and information technology all the way from such simple things as paper, and the postal service to modern computers have helped to manage risks and to encourage financial systems to address issues pertaini
07 - Inferno XIX, XXI, XXV, XXVI
This lecture deals primarily with cantos 19 and 26 of Inferno. Simony, the sin punished in Inferno 19, is situated historically to point out the contiguity of the sacred and the profane and its relevance to the prophetic voice Dante established in this canto. The fine line between prophecy and profanation is shown to resurface in Inferno 24 and 25, where the poet falls prey, as did the pilgrim in Inferno 4, to poetic hubris. Once again, the dangers of Dante’s poetic vocation are dramatized
Cells: Molecules and Mechanisms
Cells: Molecules and Mechanisms is a CC-licensed, open access textbook that can be effectively used as a resource in both introductory (underclassmen) and more advanced (upperclassmen) college cell and molecular biology courses. This book was written and designed for the student learning process, and ...
Lecture 27: Nervous System 2
This course covers the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes, as well as, the structure and synthesis of proteins, how these molecules are integrated into cells, and how these cells are integrated into multicellular systems and organisms. In addition, each version of the subject has its own distinctive material. The focus of the c
Lecture 23: Immunology 2
This course covers the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes, as well as, the structure and synthesis of proteins, how these molecules are integrated into cells, and how these cells are integrated into multicellular systems and organisms. In addition, each version of the subject has its own distinctive material. The focus of the c
Lecture 06: Genetics 1
This course covers the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes, as well as, the structure and synthesis of proteins, how these molecules are integrated into cells, and how these cells are integrated into multicellular systems and organisms. In addition, each version of the subject has its own distinctive material. The focus of the c
Lecture 02: Biochemistry 1
This course covers the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes, as well as, the structure and synthesis of proteins, how these molecules are integrated into cells, and how these cells are integrated into multicellular systems and organisms. In addition, each version of the subject has its own distinctive material. The focus of the c
18.417 Introduction to Computational Molecular Biology (MIT)
This course introduces the basic computational methods used to understand the cell on a molecular level. It covers subjects such as the sequence alignment algorithms: dynamic programming, hashing, suffix trees, and Gibbs sampling. Furthermore, it focuses on computational approaches to: genetic and physical mapping; genome sequencing, assembly, and annotation; RNA expression and secondary structure; protein structure and folding; and molecular interactions and dynamics.
18.901 Introduction to Topology (MIT)
This course introduces topology, covering topics fundamental to modern analysis and geometry. It also deals with subjects like topological spaces and continuous functions, connectedness, compactness, separation axioms, and selected further topics such as function spaces, metrization theorems, embedding theorems and the fundamental group.
HST.523J Cell-Matrix Mechanics (MIT)
Mechanical forces play a decisive role during development of tissues and organs, during remodeling following injury as well as in normal function. A stress field influences cell function primarily through deformation of the extracellular matrix to which cells are attached. Deformed cells express different biosynthetic activity relative to undeformed cells. The unit cell process paradigm combined with topics in connective tissue mechanics form the basis for discussions of several topics from cell
7.22 Developmental Biology (MIT)
This graduate and advanced undergraduate level lecture and literature discussion course covers the current understanding of the molecular mechanisms that regulate animal development. Evolutionary mechanisms are emphasized as well as the discussion of relevant diseases. Vertebrate (mouse, chick, frog, fish) and invertebrate (fly, worm) models are covered. Specific topics include formation of early body plan, cell type determination, organogenesis, morphogenesis, stem cells, cloning, and issues in
