Chapter 9: Muscles and Muscle Tissue‚ Lecture Outline: I. Overview of Muscle Tissues (pp. 276–278; Table 9.1) A. Types of Muscle Tissue (p. 277; Table 9.1) 1. Skeletal muscle is associated with the bony skeleton and consists of large cells that bear striations and are under voluntary control. 2. Cardiac muscle occurs only in the heart and consists of small cells that are striated and under involuntary control. 3. Smooth muscle is found in the walls of hollow organs and
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www.moalims.com KBSE Guess Paper IX Biology 2010 NEW PATTERN Section "A" (Multiple Choice Question) Q.1. Prepare multiple choice questions from your text book. Section "B" (Short Questions Answer - Zoology) Q.2. Define the following Physiology Ecology Cytology Taxonomy Palaeontology Genetics Bio-Chemists Embryology OR Write contributions of Al-Farabi‚ Ibn-Al-Haitham‚ Bu-Ali Sina in the field of Biology. Q.3. Write contributions of Galileo‚ Robbert Hook‚ Louis
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instructions of what to do. The mitochondria are the power plant and produces energy called ATP. The ribosomes are the factories that translate information into proteins that do the work in the cells. The Golgi functions as a post office and the endoplasmic reticulum is the highways. The protein vesicles are the trucks on the highways and the lysosome is the trash collector. Now the eukaryotic cell has two types and they are plant and animal cells. Plant cells have a wall around the plasma cell membrane
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If there is any update‚ it will be posted no later than this Saturday (2/8/14) Identify the following individuals’ major contributions to science Ehrlich – magic bullet Hooke –cell theory and microscope Jenner - cowpox Lister- disinfectant (phenol) Koch- kochs postulate Lancefield- immunology to classify via serotypes Linnaeus- nomenclature Pasteur- pasteurization‚ vaccine‚ microbes in nonliving matter‚ aseptic techniques‚ fermentation. van Leeuwenhoek- described live organisms with Hooke’s microscope
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membrane. This contrasts with the cell walls of fungi‚ and of bacteria‚ which are made of peptidoglycan. Specialized cell to cell communication pathways known as plasmodesmata‚ pores in the primary cell wall through which the plasmalemma and endoplasmic reticulum of adjacent cells are continuous. Plastids‚ the most notable being the chloroplasts‚ which contain chlorophyll a green coloured pigment which is used for absorbing sunlight and is used by a plant to make its own food in the process is known
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cellular respiration‚ metabolism and energy production in the form of ATP‚ or adenosine triphosphate. Many organelles—small structures that help to carry out the daily operations of the cell‚ inhabit the cell such as the Golgi complex‚ the endoplasmic reticulum‚ the nucleus‚ or brain of the cell‚ and lysosomes. An organelle that is the place where most of the cell’s energy is generated is called the mitochondrion. The mitochondrion‚ commonly named “the powerhouse of the cell‚” is found in most eukaryotic
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Bones support‚ move‚ and protect the body; they also give us our features. But without bone cells we would have no bones. Bone cells are the living units that make up your bones and keep them functioning. Bone cells have two major roles‚ which are the production of new bones and resorption or destruction of old bone. They also carry out other small roles. There are four main types of bone cells: Osteogenic‚ which are bone cells that respond to traumas‚ osteoblasts‚ which form bone matrix around themselves
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Chapter 11: Cell Communication Concept 11.1 External signals are converted to responses within the cell. I. Evolution of Cell Signaling 1. signal transduction pathway. a specific cellular response in a series of steps 2. signaling mechanisms first evolved in ancient prokaryotes and unicellular eukaryotes‚ then adopted for new uses 3. quorum sensing. allows bacterial populations to coordinate behaviors to carry out activities only productive when performed by a given number of cells
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EXAM-1 STUDY GUIDE DUE ON FEBRUARY 28TH PLEASE SUBMIT IN THE DROP BOX IN MICROSOFT WORD. CHAPTER-1 The Microbial World and You List several ways in which microbes affect our lives. Help maintain the balance of living organisms and chemicals in our environment. Marine and fresh water microorganisms form the bases of the food chain in oceans‚ lakes‚ and ricers. Soil microbes help break down wastes and incorporate nitrogen gas from the air into organic compounds‚ thereby recycling chemical
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Cell wall is a fairly rigid‚ protective and supportive layer surrounding the cell external to plasma membrane of plants‚ bacteria‚ archaea‚ fungi and algae. It is absent in animals and most protists. It was first observed by Robert Hooke in 1665. It is not an entirely rigid structure as the cell wall expands due to the growth of the cell. It varies in thickness from o.1mm to I0mm.in most of the cells‚ cell wall is present from the very beginning to the last‚ but in slime molds (myxomycetes)
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