ENDOGENOUS PROCESSES AND ASSOCIATED LANDFORMS THE EVER CHANGING LANDSCAPE • • • • • • Earth’s surface is ever changing Endogenous processess- interior of the earth Mountains‚ plateaus and plains formed Occurences of volcanoes and earthquakes Processess- slow and sudden Many areas rise or subside NOTABLE CHANGES • • • • Breaking of Gondwanaland 120 mya Indian peninsula started drifting towards north Took present shape around 40 mya Raising of Himalayas- present height during last 1 million years
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a living thing? Are viruses alive or not? To figure out this question we first have to know‚ what defines a living thing. According to the online Merriam-Webster Dictionary‚ life is in particular “an organismic state characterized by capacity for metabolism‚ growth‚ reaction to stimuli‚ and reproduction.” For about 100 years‚ scientists have repeatedly changed their mind over what viruses are. First seen as poisons‚ then as life-forms‚ then biological chemicals‚ viruses today are thought of as
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1. Which of the following is a basic principle that applies to both internal and external devices? A) when connecting a faster device to a slower port‚ the port adapts to the speed of the device B) if you have multiple devices to install‚ it’s best to install them at the same time C) for most installations‚ install the device first‚ then the device driver D) some devices don’t require a software component for them to work properly 2. What happens when a problem occurs while Windows 7 is installing
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NATURE AND DEVELOPMENT OF VIRUSES The Nature of Viruses Viruses are sub-cellular agents of infection that must utilize the cellular machinery of bacteria‚ plants or animals in order to reproduce. Composed of a single strand of genetic material (DNA or RNA) encased in a protein capsid‚ a virus is too small to be seen by standard light microscopy; indeed‚ most are less than one hundredth the size of a bacterium. Specific proteins on the viral capsid attach to receptors on the host cell; this
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VIRUSES Viruses are not classified in any kingdom yet because they are not really alive. They only show signs of life after they infect a host cell. Virus: lifeless particle that does not carry out any METABOLIC functions on its own and CANNOT REPRODUCE on its own until it invades a living HOST cell Viral history: Viral history is relatively short. It begins with the isolation of the human influenza virus in the 1930s and crystallization of the tobacco mosaic virus in 1933‚ and moves through
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ACG 6315 1.For which of the following products would job order costing be least likely to be used? Textbook printing Newsprint paper Manufacturing Mortgage loan processing Residential building 2.Which of the following costs are treated as part of the cost of product? Wages of plant security guards Insurance on the plant building and equipment All of the above are product costs Depreciation on the kitchen sink in the plant cafeteria 3. If a cost is identical under each alternative
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Lupita Garica Mr. Zarate 8/29/14 Period 7 Are Viruses Alive? For many years there have been numerous controversies over whether a virus should be classified as living or nonliving. It is believed that viruses are considered nonliving because they lack a substantial amount of qualities to be classified a form of life and they are incapable of carrying out all life processes. For example‚ some characteristics that would justify a virus being nonliving would be that they are acellular: they are not
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A. Is a Virus Alive? 1. Viruses are segments of nucleic acids contained in a protein coat. 2. Pathogens are agents that cause disease. 3. Viruses do not grow‚ do not have homeostasis‚ and do not metabolize‚ therefore scientists don’t consider them to be living. 4. Discovery of Viruses i. Scientists filtered bacteria from the sap of infected plants‚ and were surprised to find that the filtered sap could still cause uninfected plants to become infected. ii. In 1935‚ Wendell Stanley of the Rockefeller
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The Reproductive System All living things reproduce. Reproduction — the process by which organisms make more organisms like themselves — is one of the things that sets living things apart from nonliving matter. But even though the reproductive system is essential to keeping a species alive‚ unlike other body systems‚ it’s not essential to keeping an individual alive. In the human reproductive process‚ two kinds of sex cells‚ or gametes‚ are involved. The male gamete‚ or sperm‚ and the female
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Reproduction Brenda Rodriguez PSY/265 January 21‚ 2013 Megan Hild Reproduction The function of each of the female and male external and internal sex organs in relation to the sperm‚ and the egg is to function together to foster the reproduction process. (University of Phoenix‚ Hild‚M. 2009). The genital tract is the area of the body containing parts related to the reproductive process
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