Introduction and Chemistry of Life Anatomy: the study of structure or shape of body parts and their relationship to each other. Physiology: the study of function (how the parts work) Levels of structural organization: There is a hierarchy of structural complexity‚ beginning with the simplest or chemical level and culminating with the highest level-the whole organism Chemical level – atoms (and their parts)‚ and combinations of atoms called molecures Cellular level – cells are the basic structural
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* Microbiology: Study of microorganisms Most microorganisms are pathogenicFalse The majority of bacteria are harmless True Total number of bacterial species: about 10 million to a billion What is a microorganism? An organism or virus too small to be seen without a microscope. (Smaller than 0.5 mm) Ex: Bacteria‚ Fungi‚ Protozoa‚ Algae‚ and Viruses Microbiom: collection of microbes Human cells vs. Microbial cells = 1:10 Which statement about Michaelangelo is not correct? A. He was
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Raudah P. Mangbisa Grade VIII-Nilo VIRUS A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms‚ from animals and plants to bacteria and archaea. Characteristics: Like living organisms‚ viruses contain nucleic acids and proteins. Inside living cells‚ viruses can reproduce‚ but not by the process of mitosis like most living cells. Viruses lack some characteristics of living organisms. Outside of living cells‚ viruses are
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Introduction In this week’s laboratory period students had the opportunity to perform a common procedure preformed by many if not all microbiologists known as genetic transformation. Genetic transformation is the ability to move DNA into an organism and thereby altering its genotypic and genetic makeup (2). Genetic transformation has shown to have a wide variety of uses in many scientific studies. In agriculture‚ gene coding for traits such as frost‚ pest‚ or spoilage resistance have been genetically
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African Trypanosomiasis African Trypanosomiasis‚ also known as "sleeping sickness"‚ is a parasitic disease of people and animals caused by microscopic parasites of the species Trypanosoma brucei. It is transmitted by the tsetse fly‚ which is found only in rural Africa. Although the infection is not found in the United States‚ historically‚ it has been a serious public health problem in some regions of sub-Saharan Africa covering about 37 countries and 60 million
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Chapter 15 Signal Transduction 1) Endocrine‚ paracrine ‚ autocrine signaling‚ and cell-cell contact (Fig. 15-2). Endocrine signaling is long distance signaling. An example would be pancreatic cells secreting insulin. Paracrine signaling is for close proximity. An example would be a nerve cell releasing neurotransmitters. In autocrine signaling the cell that produces the ligand also contains the receptor for that ligand. This is how cancer cells work. In signaling by plasma membrane attached
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Introduction: Mitosis occurs in all eukaryotic cell tissues and produces genetically identical daughter cells with a complete set of chromosomes. In humans‚ mitosis produces somatic cells that are diploid‚ which means they contain two non-identical copies of each of the twenty-three chromosomes. One copy is derived from the person’s mother and the other from the person’s father. Meiosis‚ on the other hand‚ occurs only in testis and ovary tissues‚ producing sperm and ova (eggs). The gametes that
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Chapter 1 Section 1 Anatomy-Study of internal and external structures of the body and the physical relationships among body parts Gross Anatomy -involves the examination of relatively large structures and features usually visible with the unaided eye Microscopic Anatomy-deals with structures that cannot be seen without magnification Physiology-the study of function and considers the functions of the human body Anatomy and physiology are closely interrelated Theroretically Practically Anatomical
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Biology – Assignment One Cells. Question One Explain the roles of the main components and features of a cell to the cell function. A typical animal cell is rounded in shape‚ surrounded by a cell membrane. This holds in the cytoplasm‚ which contains other structures such as the nucleus‚ ribosomes‚ and mitochondria. Each cell has tiny structures inside called organelles; each type of organelle performs a particular function. For example there are mitochondria (power stations)‚ ribosomes (protein
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2015 IfAS JODHPUR CSIR NET LIFESCIENCE JUNE 2015 SOLVED PAPER BY IFAS JODHPUR PART ’A’ 1. What is angle x in the schematic diagram given below? 9. Let m and n be two positive integers such that m + n + mn = 118. Then the value of m + n is 1. not uniquely determined 2. 18 3. 20 4. 22 10. From a group of 40 players‚ a cricket team of 11 players is chosen. Then‚ one of the eleven is chosen as the captain of the team. The total number of ways this ? can be done is [ below means the number of ? ways
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