BIOSC 048: Problem Set Questions 1. Given that cell A has significantly more nongated K+ channels than cell B‚ which cell has the larger resting membrane potential? Explain. If the permeability to K is higher in A than in B‚ then the resting membrane potential (rmp) will be closer to the equilibrium potential in cell A‚ which means the rmp will be more negative in cell A than in cell B; or in other words‚ the potential difference will be LARGER in cell A. 2. Predict the effect of a reduced
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BETA MANAGEMENT COMPANY Q1. Calculate the variability (standard deviation) of the stock returns of California REIT and Brown Group during the past 2 years. How variable are they compared with Vanguard Index 500 Trust? Which stock appears to be riskiest? The stock returns for each month are given in Table 1. Based on the monthly returns‚ the standard deviation or variability of each stock has been calculated. The standard deviation for California REIT is 9.23% and the standard deviation for Brown
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Cell Membrane Transport Cell Membrane Transport Hands-On Labs‚ Inc. Version 42-0034-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a su Premium 609 Words 3 Pages Diffusion and Osmosis of Solutes and Water Across a Membrane Diffusion and Osmosis of Solutes and Water Across a Membrane Brittany Bacallao Nova Southeastern University Abstract: This experiment gave a visual understanding
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Biological Membranes Lipid Membranes • Receptors‚ detecting the signals from outside: Light Odorant Taste Chemicals A Hormones Neurotransmitters Drugs • Channels‚ gates and pumps • Electric/chemical potential Neurophysiology Energy • Energy transduction: Photosynthesis Oxidative phosphorylation • • • • • • Structure Function Composition Physicochemical properties Self-assembly Molecular models highly selective permeability barrier Internal membranes for organelles Bilayer Permeability
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2. Draw and completely label a cell membrane. [pic] 4. List and briefly discuss the 5 components of cellular membranes. 1. Phospholipids layer- 2 layers ‚ polar and non polar ‚ polar facing the extracellular fluid and cytoplasm 2. Transmembrane proteins-integral membrane proteins are proteins that expand the membrane 3. Interior protein network-peripheral proteins are in the interior side of the membrane 4. Cell surface markers are glycolipids‚ carbohydrates/lipid
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BIOL 2010 ANATOMY AND PHYSIOLOGY I Chapter 4: TISSUES AND MEMBRANES Outline of Notes I. Introduction. A. General: Cells are highly specialized and interdependent on one another. Groups of similar cells performing similar functions are called Tissues The study of tissues is called Histology. Organs are made of tissues. A detailed understanding of tissues will greatly help your understanding of organs and organ systems later in this course. Tissues are classified into 4 main types:
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Acne Vulgaris is a disease of the epidermal pilosebaceous follicles involving inflammatory and non-inflammatory clinical lesions in the skin. The multifactorial pathogenesis of acne includes sebum‚ ductal epidermal hyperproliferation‚ colonization of Proprionibacterium acnes and inflammation . Research has shown‚ P. acnes is not the cause of Acne Vulgaris‚ but is a significant contributing factor to the inflammation stage of this disease . Sebum secretion upsurge‚ during times such as puberty‚
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Proteus Vulgaris Proteus vulgaris is a gram negative‚ facultatively anaerobic‚ bacillus rodchemoheterotroph bacterium belongs to the family Enterobacteriaceae. It possesses peritrichous flagella‚ making it actively motile. P.vulgaris occurs naturally the intestional tracts of humans and animals‚ soil‚ fecal matter‚ polluted water‚ and raw meat. It is grouped with the enterobacteriacea and is an opportunistic pathogen of humans. In humans P.vulgaris is known to cause urinary tract
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Identification of Proteus vulgaris from an Unknown Sample Lakhram Bhisham March 31‚ 2016 01:447:390 General Microbiology TA: Jennifer Goff ABSTRACT This report delineates how unknown #405 was identified as Proteus vulgaris out of a possible seven species of Enterobacteriaceae by applying various tests that are able to distinguish between members of the family. Inevitably‚ the results for many tests are identical across multiple species‚ which is expected due to the organisms’ evolutionary relatedness
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Title: Investigation of Induction Time of lac operon in E. Coli with IPTG‚ and Comparision of the Amount Beta-galactosidase produced with Lactose‚ IPTG and Antibiotic. Abstract: Introduction: An operon is a group of genes that are arranged side by side with a regulatory gene. It also includes a promoter gene‚ operator gene‚ structural genes. Regulatory genes control transcription with positive or negative signal. (Jacob‚ and Monod‚ 1961) A positive signal‚ inducer‚ would stimulate
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