Learning about Cells. First thing I want to show you is two beautiful pictures of a Cell. Imagine all of this is in something so small we cannot see it with our naked eyes. About 10‚000 average-sized human cells can fit on the head of a pin. There are a few exceptions‚ but the average cell is very tiny. Here are a few beautiful examples of a cell structure to kind of give you an idea of its beauty‚ and how they fit together. Plasma Membrane (cell membrane) First we are going to learn about
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Faculty of Medicine MAHSA UNIVERSITY STUDY GUIDE Block: Genetics‚ Immunology & Molecular Medicine (GIM) Session: 2013/2014 Semester 1 (Year 1) MBBS PROGRAM Block Coordinator: Dr Selvi Palasubramaniam CONTENTS 1. Teaching Staff & Contacts 2 2. Academic calendars MBBS Session 2013 / 2014 3 3
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prokaryotes have been split into eubateria‚ bacteria and archeobacteria Carl P. Woese (1960’s) - proposed another taxon larger then a kingdom - called it a domain - placed in 1 of 3 domains - based on nucleic acid studies (specifically ribosomal RNA) Classification Modern Critera? 1) Morphological (cell type) 2) Physiological & Metabolic (ex. Reproduction) (asexual v. sexual) (autotroph?/ heterotroph?) (vertebra or envertibray) 3) Ecological (Range and Life cycle) 4) Molecular (Protein
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Cell Structure and Function Chapter Outline Cell theory Properties common to all cells Cell size and shape – why are cells so small? Prokaryotic cells Eukaryotic cells Organelles and structure in all eukaryotic cell Organelles in plant cells but not animal Cell junctions History of Cell Theory mid 1600s – Anton van Leeuwenhoek Improved microscope‚ observed many living cells mid 1600s – Robert Hooke Observed many cells including cork cells 1850 – Rudolf Virchow
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EXERCISE 7 Use of Biometrics in Animal Taxonomy ANSWERS TO STUDY QUESTIONS: 1. Discuss the conflict between the uses of molecular markers against morphological characters in the construction of phylogenetic trees. Molecular phylogenetics predates DNA sequencing by several decades. It is derived from the traditional method for classifying organisms according to their similarities and differences (morphological characters)‚ as first practiced in a comprehensive fashion by Linnaeus in the
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Organelle |Function |Location | | |Cell (plasma) membrane |Composed of proteins and a bilayer of lipid. |Outermost boundary of cell (animal) | | |Holds the contents of the cell in place. | | | |Regulates the movement of materials into and out of the cell using the |
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As humans‚ we are the most dominant species in the world. We have the ability to walk upright‚ grasping thumbs‚ and large brains. This helps us to live and be successful on earth. But‚ these advantages we have didn’t happen overnight‚ they occurred during the hominine evolution. The skull‚ neck‚ spiral column‚ hip bones‚ and leg bones of the early hominine species changed shape in ways that later enabled species to walk upright. The evolution of dipedal‚ or two-footed‚ locomotion was very important
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Differences in chromatin Differences in chromosomes Differential content of DNA Differential expression of genes 1-2 Which of the following structures is not normally found in the cytoplasm of a resting cell? DNA Messenger RNA (mRNA) Ribosomal RNA (rRNA) Transfer RNA (tRNA) 1-3 Which of the following cytoplasmic organelles are not found in most all nucleated cells? Endoplasmic reticulum Golgi apparatus Mitochondria Myofilaments 1-4 Which of the following is the primary purpose of
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The Endosymbiont Hypothesis and the evolution of the Chloroplast and Mitochondria Dr Lynn Margulis is seen as the first person to have put forward the Endosymbiont Hypothesis which is based on a theory which explains the likely origin of the mitochondria and chloroplast (plants) in eukaryote organisms which we observe today. Dr Margulis received evidence from all over the world and from many scientific researchers and experiments‚ Margulis simply had to put all the evidence together to form her
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Botany Lab Introduction to Microscope Circa 1000 AD. = the first vision aid was invented (inventor unknown) called a reading stone. Circa 1284= Italian‚ Salvino D’ Armante is credited inventing the first bearable eye glass. 1590= two dutch eye glass makers‚ Zaccharias Janssen and Hans Janssen experimented with multiple lenses. 1665= English Physicist‚ Robert Hooke looked at a silver of cork through a microscope lens and noticed some “pores” or “cells”. 1674= Anton Van Leeuwenhoek built
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