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    Chapter 3 Notes

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    prepared by Vince Austin‚ Bluegrass Technical and Community College Human Anatomy & Physiology SEVENTH EDITION Cells: The Living Units 3 P ART A Copyright © 2006 Pearson Education‚ Inc.‚ publishing as Benjamin Cummings But First… Let’s clean up… Hydrophobic Hydrophilic Copyright © 2006 Pearson Education‚ Inc.‚ publishing as Benjamin Cummings Plasma Membrane Separates intracellular fluids from extracellular fluids Plays a dynamic role in cellular activity Just like the

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    BIO 201 Study Guide

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    BIO Chapter 2 Study Guide 1-Know the difference between an atom‚ an element and a compound. -Atom-The basic unit of a chemical element. -Element-A unique molecule that makes up all matter and cannot be broken down any further. -Compound- Two or more elements together 2-Understand and be able to apply the concept of the Atomic number and the Atomic mass of an element. -Atomic Number- The number of protons an element has. -Atomic Mass-The number of Protons + Neutrons. *the number of neutrons

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    Gel Electrophoresis Lab

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    Ali A. Mohammed Cell Structure and Function 16 October 2014 Gel Filtration and Electrophoresis Objective The essential goal of the experiment was to separate proteins in a solution based on size in different fractions. The relative protein content for each one fraction was found through the utilization of an amido black-based protein assay. Later in the trial polyacrylamide gel electrophoresis was utilized to separate BSA from hemoglobin. Methods I. Gel Filtration and Protein Assay: 1. A slurry

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    The Protista Assignment

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    and propel. Food Getting and Digestion Digestion in amoeba is intracellular taking place within the cell. The food taken in remains in a food vacuole or gastric vacuole formed by the cell membrane and small part of the cytoplasm. Paramecia feed on microorganisms like bacteria‚ algae‚ and yeasts. To gather its food‚ the paramecium uses its cilia to sweep the food along with some water into the cell after it falls into the oral groove. Photosynthesis Respiration (gases exchanged and methods of

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    4B- The hypothesis was supported because the diffusion rate was faster shown from the agar blocks. The materials passed through the membrane easily and quickly in the small cells than the large‚ making them more efficient. The smaller the cell is‚ the faster it can transport signals. The bigger cell took longer because it took up more surface area than the smaller cell. 4C- The hypothesis was supported because the yellow bag which had the largest amount of sucrose solution gained more mass than the

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    phisiology lab

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    Exercise 1: Cell Transport Mechanisms and Permeability: Activity 2: Simulated Facilitated Diffusion Lab Report Pre-lab Quiz Results
You scored 50% by answering 2 out of 4 questions correctly. 1. Molecules need a carrier protein to help them move across a membrane because Your answer : a. they are not lipid soluble.
Correct answer: d. they are lipid insoluble or they are too large. 2. Which of the following is true of facilitated diffusion?
You correctly answered: c. Movement is passive and down

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    Microbiology notes

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    Micrbio Clicker questions: 1. Organisms that have a prokaryotic cell structure‚ no peptidoglycan in cell walls and unique cell membrane lipids would most likely be: A. Archaea 2. Who first published extensive observations of microorganisms? A. Anthony Von Leeuwenhoek 3. The primary use of Koch’s postulates is to? A. Demonstrate that a disease is caused by a specific microorganism 4. Microscope resolution ____________ as the wavelength of radiation used to illuminate the specimen

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    bacterial cell‚ the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. 2. Cellular foundations Page: 3 Difficulty: 1 Ans: E A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: A) DNA. B) photosynthetic capability. C) plasma membranes. D) ribosomes. E) the nucleus. 3. Cellular foundations Page: 3 Difficulty: 1 Ans: B In eukaryotes‚ the nucleus is enclosed by a double membrane called

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    lower solute concentration of minerals than the epidermal cell cytoplasm (there is a water potential gradient). Water movement across the cortex cell is by two pathways both involving a water potential gradient. The cortex cell cytoplasm has a solute concentration gradient. This moves water symplastically from cell to cell by osmosis. The Apoplastic pathway moves water by capillary action of mass flow through the connecting cellulose cell wall. The endodermis marks the beginning of the central

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    contains a red pigment called betalain‚ which is in the cell vacuole. Normally the betalain stays inside the cell‚ however when the cell is exposed to extreme temperatures they leak out. The reason why they leak out is because of the cell membrane structure. When the cell membrane is exposed to extreme heat the proteins unravel and the lipids melt. This will allow the betalain to leak out from the cell vacuole. Under extreme cold the cell membrane will freeze and fracture also allowing the betalain

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