Midterm 1 stuff (1‚ 25‚ 26‚ 27‚ 28) 2) What characterizes a prokaryotic cell? a. the lack of ribosomes b. the lack of a membrane-enclosed nucleus c. the presence of a nucleus with no DNA d. the presence of mitochondria e. having a cell wall without a cell membrane 3) Which of the following does NOT comprise a logical hierarchy of organization? a. family‚ order‚ class‚ phylum‚ kingdom b. molecules‚ cells‚ tissues‚ organ systems‚ populations c. organisms‚ populations‚ communities‚ biomes
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SCI 2020 Study Guide for Exam 1 on September 14‚ 2012 Ch. 14 How did reading books by Lyell and Malthus influence Darwin’s development of the theory of evolution? - From Lyell‚ Darwin saw that species gradually changed over time o Example: the Finches - From Malthus‚ Darwin perceived the idea of natural selection o Survival of the fittest o Those species that possessed physical‚ behavioral or other attributes survived over those who didn’t
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Theories: unifying explanations of the natural world Proximate questions: deal with mechanisms. Don’t always need evolutionary explanations Ultimate questions: concerned with evolutionary origins and functions Induction: inference of general law from observations Hypothesis: possible explanation for observation Carolus Linnaeus: binomial nomenclature Nomenclature: system of rules for naming things Taxonomy: naming and classifying organisms Systematics: theory and practice of classifying organisms
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Anti-bacterial property of Duhat (Syzgium Cumini) Bark extract John Francis M. Vicera January‚ 2012 Ms. Santiago Abstract Humans especially for those who live in dirty community are prone to get disease such as cholera‚ diarrhea‚ fever and many more because there is an unseen specimen called bacteria. Bacteria such as e-coli and staphylococcus are the most common bacteria that can cause illness to mankind. According to the World Health Organization (WHO) 3 out of 10 people are infected by bacteria
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The Nature of biology and science Cell theory: * All organisms are made of cells and the products of cells * All cells come from pre-existing cells * The cell is the smallest organisational unit Cells have an outer membrane‚ encloses fluid contents of cell (cytoplasm) Robert Hooke (1665): observed dead cells from bark Anton van Leeuwenhoek: described living cells Matthias Schleiden: plant issues Theodor Schwann: animal tissues Bacteria found without nucleus and lacking other membrane-bound
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Lecture 1: What are the 3 domains of life? (Ch. 12‚ Section “The Three Domains of Life”) Bacteria‚ Archaea‚ and Eukarya What marine organism represents the vast majority of the ocean’s biomass? (Ch. 12‚ Section “How Are Marine Organisms Classified?”) Plankton Plankton is a organism that float. Why is a copepod‚ which can swim and propel itself through the water‚ classified as plankton? (Ch. 12‚ Section “Plankton”) Because of its small size‚ it cannot swim very far or fast so its location
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could be used in the future (Weirich‚ 2005). This discovery gave way to understanding these species abilities and the positive effects it has on humans and other existing mammals. Acidophillic extremophiles exist as two types of broad categories: Archaea and Bacteria. Lactobacillus
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air‚water some of the microbes are even found in the very hot places while some are found absolute freezing places ‚these microscopic organisms are found in plants and animals and are even found in human body‚ mainly microbes includes : bacteria‚archaea‚fungi and protists. U.S. Department of human and Health Services.2012: what are microbes.[online] ].[Accessed 9 April 2013] .Available from: world wide web:< http://www.niaid.nih.gov/topics/microbes/Pages/default.aspx>‚ majority of microbes are completely
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metabolism‚ response to stimuli‚ and plasma membranes. One significant difference is that prokaryotes are without a cell nucleus and eukaryotes are cells with a membrane bound nucleus Prokaryotic falls in two taxa characteristic of organism: domain archaea and domain bacteria; however prokaryotic itself is not a taxon. Prokaryotes does not have a membrane surrounding its genetic material (DNA) they make proteins simultaneously to read their genetic code. Eukaryotes have a membrane called a nuclear envelope
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Biology Honors Final Exam Review Study Guide A. Intro Unit * Characteristics of life (DR.CHARGE) * DNA * Directs protein synthesis * Reproduce * Divides in mitosis (asexual reproduction) * Cells * Homeostasis * The process by which cells maintain constant internal condition (water‚ temperature) * Adaptation (Evolution) * Respond to stimulus * Growth (Development) * Energy * Heterotroph: an organism that cannot synthesize its own food
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