The nucleolus (plural nucleoli) is a non-membrane bound structure. Composed of proteins and nucleic acids found within the nucleus. Ribosomal RNA (rRNA) is transcribed and assembled within the nucleolus. Three major components of the nucleolus are recognized: the fibrillar centers (FC)‚ the dense fibrillar components (DFC)‚ and granular components (GC). The DFC consists of newly transcribed rRNA bound to ribosomal proteins‚ while the GC‚ contains rRNA bound to ribosomal proteins that are beginning
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p53: Structure‚ Function and Therapeutic Applications Ling Bai and Wei-Guo Zhu1 Department of Biochemistry and Molecular Biology‚ Peking University Health Science Center‚ Beijing‚ China [L. Bai‚ W.-G. Zhu]; Department of Biotechnology‚ Guilin Medical College‚ Guilin‚ China [L. Bai] Since the p53 tumor suppressor gene has been found to be mutated in more than 50% of human cancers‚ it has attracted the interest of numerous researchers. The capacity of p53 for multiple biological functions can be
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that of bacteria and manufacturing many of their own proteins. The fact that both the organelles reproduce by binary fission can also be mentioned. Besides the similarities between the two organelles‚ notable differences are present in their structure and function that could be stated as follows: Chloroplasts and mitochondria both have number of different membranes where most of the energy conversion reactions take place. But there are some membranes in the chloroplast that contain some crucial components
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DNA STRUCTURE AND FUNCTION QUIZ Provide answers to each of the following. You may consult your text and fellow students. Each numbered item counts 2 points. 1. If one strand of a DNA double helix has the sequence GTCCAT‚ what is the sequence of the other strand? a. ACTTGC b. CUGGTU c. CAGGTA d. CAGGUA e. TGAACG 2. If a strand of DNA has the sequence AAGCTC‚ transcription will result in a(n) ______. a. single DNA strand with the sequence TTCGAG
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Role of Stomata & Control Stomata : a pore found in the epidermis of plants which are used to control as exchange Main function of stomata : Allow enough C02 to enter the leaf to optimize photosynthesis‚ while conserving as much water as possible Structure of stomata * Each stomata consists of a stoma (minute pore) which are surrounded by 2 guard cells. * Stomata closes and opens according to the turgidity of the guard cells * Stomata also allows for cooling of the leaf by loss
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ENZYME STRUCTURE AND FUNCTIONS: Enzymes are biological catalysts. They increase the rate of reactions by a factor of between 106 to 1012 times‚ allowing the chemical reactions that make life possible to take place at normal temperatures Definition of enzyme: A protein with catalytic properties due to its power of specific activation is defined as an enzyme. STRUCTURE Enzymes are proteins their function depends on its complexity. The reaction takes place in a small part of the enzyme
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MEMBRANE PROTEINS determine the membrane’s function Many diff. types of protein in plasma membrane 2 types of proteins Peripheral proteins-loosely bound to surface‚ not embedded in bilayer Integral proteins-penetrate the hydrophobic core Integral Proteins Transmembrane proteins=integral proteins that span the membrane The hydrophobic regions of an integral protein consists of one or more sections of non-polar amino acids‚ often coiled in alpha functions of membrane proteins Transport Allow
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Whether you are already an experienced practitioner in other complementary or beauty therapies or this is you first course‚ I am sure that you will embrace what you learn from this course and finish it feeling motivated and humble that you can provide this wonderful treatment to your clients‚ family and friends. Facials and skin exfoliation are an important part of general skin maintenance. Facials include deep cleansing‚ exfoliation‚ moisturizing‚ mask application‚ and massage‚ are great for removing
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| |LEVEL 200 | | |PRINCIPLES OF MANAGEMENT | | |JENNIFER OPOKU BAAH
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Aorta: The aorta carries oxygenated blood to different parts of the body. It distributes blood to all the arteries. Brachiocephalic artery: The brachiocephalic artery carries oxygenated blood away from the heart. It supplies the brain‚ right arm‚ and neck with blood. Common carotid artery: The common carotid artery supplies oxygenated blood to the front of the brain as well as the head‚ neck‚ face‚ and spinal cord. Subclavian artery: The subclavian artery carries blood away from the heart and
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