* Meiosis – cell division for gamete production * In specialized tissues * Produces cells with the 1n chromosome number * Two Divisions * Meiosis I separates homologous chromosomes * Meiosis II separates sister chromisis * Asexual Reproduction * Mitotic division * Identical offspring * Sexual Reproduction * Fuse gametes from parents (syngamy) to produce a zygote * Each parent contributes half the genetic material * Increase the diversity of
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2-Doxorubicin-DOX(Adriamycin): The anthracycline antibiotic doxorubicin (DOX) (C27H29NO11) (fig.2) (Kambas et al.‚ 2013) is one of the most useful anticancer agents and is still a cornerstone in the therapy of many carcinoma types.(simunek et al .‚ 2009) including leukemia‚ lymphoma‚ breast‚ lung‚ ovarian‚ and liver cancers‚ among others. Originally isolated from the fungus streptomyces peucetius (youngmok‚2003). Fig.( 3 )Chemical structure of
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is a difference between prokaryotic and eukaryotic cells? b) What is one significant similarity? Prokaryotic cells do not have a neucleus and Eukaryotic cells do have a nucleus. One similarity is that both are covered by a cell membrane and contain RNA as well as require energy 3. Which type of microscopy provides a 3d view of the surface of an object? Scanning electron microscope 4. Would you find proteins inside cells or cells inside proteins? (Choose one answer.) Protein inside cells
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Macromolecular Composition of the Liver Cell Formal Report Aims The aim of the experiment was to test for the presence of DNA‚ RNA‚ protein and glycogen in the cytoplasm and the nucleus of bovine liver cells. From the findings of the results the distribution of these macromolecules can be shown within the liver cell. This was carried out by undertaking qualitative experiments‚ where the observation of a colour change was noted and a quantitative experiment‚ where numerical data was recorded from
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Module 1 ‘Introduction to Molecular Biology’ Learning Objectives (Chapter 6) Molecular Biology‚ DNA‚ chromosomes‚ and the central dogma. Understand Nucleic Acid Structure and properties (including alternate forms of DNA structure and supercoiling‚ and renaturation) Explain the nature of Prokaryotic Chromosome Understand the differences in re-association kinetics of single-copy vs. repeated sequence Understand how DNA re-association provides a measure of genome size in base pairs Functions
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Mitosis Biology Project Dania Abu Zahra‚ Hadeel Kashash‚ Nada Mubarak‚ Reem Al Ahbabi What is Mitosis? Mitosis is the process by which a cell‚ which has previously replicated each of its chromosomes‚ separates the chromosomes in its cell nucleus into two identical sets of chromosomes‚ each set in its own new nucleus. It is a form of nuclear division. It is generally followed immediately by cytokinesis. Mitosis and cytokinesis together define the mitotic (M) phase of the cell cycle—the division of
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identification of the organisms is difficult because the contaminating organisms often are not cultivable. (Wiley et al. 2012) study was explored further insight into the etiology of contact lens related disease by using culture independent‚ 16S ribosomal RNA (rRNA) gene analysis. In their study Achromobacter‚ Stenotrophomonas and Delftia were the predominant bacteria rather than Pseudomonas in patient having contact lens related corneal diseases. These genera’s exhibits physiological properties similar
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Archaea: Most are unicellular and microscopic. Prokaryotic. Example: ancient bacteria‚ live in harsh enviorments‚ Eukarya: Contain a nucleus and organelles. Eukaryotic. Example: Plants‚ animals‚ fungi and all other forms of life -All have cells‚ dna‚ rna‚ membrane‚ ribosomes Producer to Tertiary Consumer in an energy pyramid (trophic levels) -Trophic structure / levels~ feeding relationships in an ecosystem -Primary producers~ the trophic level that supports all others; autotrophs -Primary consumers~
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1. Eukaryotic cells have a true nucleus‚ bound by a double membrane. Prokaryotic cells have no nucleus. The purpose of the nucleus is to sequester the DNA-related functions of the big eukaryotic cell into a smaller chamber‚ for the purpose of increased efficiency. This function is unnecessary for the prokaryotic cell‚ because its much smaller size means that all materials within the cell are relatively close together. Of course‚ prokaryotic cells do have DNA and DNA functions. Biologists describe
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Bacterial Diversity Project John FreesackSection A24 Kim Daffer‚ John Chang September 23‚ 2012 Introduction: Bacteria are everywhere. Some can be seen with the naked eye and some require a microscope but how do we distinguish one kind of bacteria from another? To answer this question‚ we were required to complete three bacterial labs that helped us to understand what microorganisms are and how to identify and classify them. Thus‚ the main purpose of this project is to identify our unknown microorganisms
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