Xem 1-20 trên 177 kết quả Animal biology
  • Tissue culture was first devised at the beginning of the twentieth century [Harrison, 1907; Carrel, 1912] (Table 1.1) as a method for studying the behavior of animal cells free of systemic variations that might arise in vivo both during normal homeostasis and under the stress of an experiment. As the name implies, the technique was elaborated first with undisaggregated fragments of tissue, and growth was restricted to the migration of cells from the tissue fragment, with occasional mitoses in the outgrowth.

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  • .The Project Gutenberg EBook of Anecdotes of the Habits and Instinct of Animals, by R. Lee This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org Title: Anecdotes of the Habits and Instinct of Animals Author: R. Lee Illustrator: Harrison Weir Release Date: June 30, 2007 [EBook #21973] Language: English .

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  • The Project Gutenberg EBook of The Minds and Manners of Wild Animals by William T. Hornaday Copyright laws are changing all over the world. Be sure to check the copyright laws for your country before downloading or redistributing this or any other Project Gutenberg eBook. This header should be the first thing seen when viewing this Project Gutenberg file. Please do not remove it. Do not change or edit the header without written permission. Please read the "legal small print," and other information about the eBook and Project Gutenberg at the bottom ...

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  • In laboratory conditions (relative humidity 50-70%, temperature 25 ± 2 ° C, 16 h light) monitoring studies of biological interactions between spiders catch prey Amblyseius cucumeris (Oudermans) and Orius bugs prey sauteri (Poppius) in an environment with lots of prey thrips thrips palmi (Karny)

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  • FC01 CELLS Cells are tiny building blocks that make up all living things. Cells are so small that you need a microscope to see them. ANIMAL CELL This is the control centre of the cell. It contains chromosomes with DNA instructions for all the cell’s activities, including instructions to make new cells. This is a jelly like substance, in which many of the cell’s activities, e.g. respiration and protein synthesis occur. This is a thin skin around the cell. It is selectivelt permeable, controlling what goes in and out of the cell....

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  • Rarely in the modern history of humans has biology played such an important role in human affairs as it does today. In the eighteenth and nineteenth centuries, explorers stimulated the first major advance in biology by bringing back countless new species that Darwin, and others, put into a logical order based on the theory of natural selection. The development of evolutionary thinking and the clarification of the rules of genetic inheritance resulted in the theoretical base for targeted artificial selection—an essential component of progress in biology and agriculture....

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  • The timing of the publication of this book couldn’t be better as we celebrate the 50th anniversary of Charles Elton’s seminal book, The Ecology of Invasions by Animals and Plants. Since this influential book was published in 1958, the study of bioinvasions has developed exponentially, alongside the exponential growth in the magnitude of the invasion problem itself. Today, bioinvasion, a highly complex ecological process and environmental concern, has become a specific branch in ecology and environmental studies, with many disciplines developing within it....

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  • The Project Gutenberg EBook of Concerning Animals and Other Matters by E.H. Aitken, (AKA Edward Hamilton) This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online

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  • In response to requests from Congress, NASA asked the National Research Council to undertake a decadal survey of life and physical sciences in microgravity. Developed in consultation with members of the life and physical sciences communities, the guiding principle for the study is to set an agenda for research for the next decade that will allow the use of the space environment to solve complex problems in life and physical sciences so as to deliver both new knowledge and practical benefits for humankind as we become a spacefaring people.

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  • Conserving biodiversity is a daunting and complex task. Perhaps no species presents a greater challenge than the giant panda – one of the most recognized and threatened animals on the planet. Its difficult-to-traverse, mountainous habitat in China makes quantifying population numbers in the wild exceedingly difficult. Despite a recent survey suggesting that the wild population may be growing, there is no disagreement that the primary threat is severely fragmented habitat.

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  • From microorganisms to whales, from single cells to complex organisms, from plants to animals to fungi, from body plans to behavior, the diversity of life is amazing. Living organisms have a profound impact on our physical world of ocean, landscape, and climate; around us is a multitude of diverse ecosystems that provide a livable environment and many valuable resources. The study of life—biology—is a multifaceted endeavor that uses observation, exploration, and experiments to gather information and test hypotheses about topics ranging from climate change to stem cells.

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  • Over the past several years, scientists from the United States and around the world have been using a technique called DNA sequencing to unlock the genetic code of many different organisms. With code in hand, scientists can design sophisticated experiments that will inform our understanding of how an organism develops and functions. To date, they have carried out partial or complete DNA sequencing on human, mouse, rat, bacterial, and plant genomes. A major finding that was confirmed from these efforts is that most biologic functions are genetically conserved within and between species....

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  • Tham khảo sách 'concerning animals and other matters by e.h. aitken', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tham khảo sách 'the human side of animals, by royal dixon', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Chapter 32 introduction to animal diversity. After completing this chapter, students will be able to: List the characteristics that combine to define animals; summarize key events of the Paleozoic, Mesozoic, and Cenozoic eras; compare the developmental differences between protostomes and deuterostomes.

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  • This chapter describe how a sponge feeds and digests its food, list the characteristics of the phylum Cnidaria that distinguish it from other animal phyla, list the four classes of Cnidaria and distinguish among them based on life cycle morphology, list the characteristics of Platyhelminthes and distinguish among the four classes, describe the features of molluscs and distinguish among the four classes,...

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  • Chapter 1 introduction the scientific study of life. In this chapter, the following content will be discussed: The characteristics of life, humans are related to other animals, science as a process, making sense of a scientific study, science and social responsibility.

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  • Prokaryotes, yeasts and plants synthesize thiamin (vitamin B1) via complex pathways. Animal cells capture the vitamin through specific high-affinity transporters essential for internal thiamin homeostasis. Inside the cells, thi-amin is phosphorylated to higher phosphate derivatives. Thiamin diphos-phate (ThDP) is the best-known thiamin compound because of its role as an enzymatic cofactor.

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  • Quinone reductases are ubiquitous soluble enzymes found in bacteria, fungi, plants and animals. These enzymes utilize a reduced nicotinamide such as NADH or NADPH to reduce the flavin cofactor (either FMN or FAD), which then affords two-electron reduction of cellular quinones.

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  • Chapter 32 - An introduction to animal diversity. After completing this chapter, students will be able to: List the characteristics that combine to define animals; summarize key events of the Paleozoic, Mesozoic, and Cenozoic eras; compare the developmental differences between protostomes and deuterostomes.

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