Exam 1 (Biol 120‚ Spring 2014) 2/21/14 12:00-12:50 pm 50 questions × 3 points = 150 points 1. Table right compares the shape and size of various prokaryotes. Which one best describes Escherichia coli? A) A B) B C) C D) D E) E 2. Which is the least permeable through the cell membrane? A) Proton B) Water C) Glycerol D) Tryptophan E) Glucose 3. Figure right shows three classes of transport systems. Which one is using energy? A) 1 B) 2 C) 3 D) 1 and 2 E) 1‚ 2 and 3 Use figure right to answer
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Chapter 1- 2 CHAPTER 1 INTRODUCTION: THEMES IN THE STUDY OF LIFE OBJECTIVES Exploring Life on Its Many Levels 1. Briefly describe the unifying themes that characterize the biological sciences. 1. The cell an organism’s basic unit of structure and function 2. Heritable information: the inheritance of biological information in the form of DNA which is encoded in the nucleotide sequence of DNA. 3. Emergent properties: emerge as a result of interaction among components at the
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Evolution: descent with modification; the idea that living species are descendants of ancestral species that were different from the present-day ones. Biology: the scientific study of life. Emergent properties: new properties that emerge with each step upward in the hierarchy of life‚ owing to the arrangement and interaction of parts as complexity increases. Systems biology: an approach to studying biology that aims to model the dynamic behavior of whole biological systems based on a study of the
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(Natural Resources Conservation Service‚ 2013) At first glance‚ soil may seem to be just another substance that lies on the ground beneath our feet. But by taking a closer look‚ soil appears to be more lively and complex with organisms including archaea‚ bacteria‚ actinomycetes‚ fungi‚ algae‚ protozoa‚ and a wide variety of larger soil fauna‚ including springtails‚ mites‚ nematodes‚ earthworms‚ ants‚ insects that spend all or part of their life underground‚ and larger organisms such as burrowing
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MBK – Lab Report Name: ____________________ Section: ___________________ Module 3‚ Experiment 3: Aseptic Technique & Culturing Microbes Part 3: Generating Microbial Cultures: Observe your culture tubes after 24 hours to assess the growth patterns of all tubes. If there is no observable growth allow the tubes to incubate an additional 24 hours. Record your observations here. Attach a picture of you incubator in this space. Questions: A. What is
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Name and Course Section: Avital Gershtein‚ Section 701 Title: Aseptic Technique & culturing Microbes - Lab # 4 Purpose: The purpose of this experiment is to Learn and employ aseptic technique‚ to become familiar with basic requirements of microbial growth‚ to learn the basic forms of culture media‚ and to become familiar with methods used to control microbial growth. Bacteria Growth pattern after 24 hours Growth pattern after 48 hours L. acidophilus in liquid MRS broth No growth Amount of sediment
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virus is a small infectious agent that can replicate only inside the living cells of organisms. Most viruses are too small to be seen directly with a light microscope. Viruses infect all types of organisms‚ from animals and plants to bacteria and archaea. All viruses have genes made from either DNA or RNA‚ long molecules that carry genetic information; all have a protein coat that protects these genes; and some have an envelope of fat that surrounds them when they are outside a cell. Fungi:
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electron transport chain‚ thylakoid membrane‚ chloroplast. 2) Explain why each of the following misconceptions about photosynthesis is false: CH5 WIO #15 • Only plants are autotrophs Answer: False. Certain bacteria‚ protists and archaea are also autotrophs. Autotrophs are able to create their own food using light source and photosynthesis process or through obtaining energy through oxidation. Some example of living organisms that is autotrophs that is not plants are red algae and
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forty-five degrees celsius. Thermophiles can be found in soil and water associated with volcanic activity‚ and in compost piles and habitats exposed to direct sun. Most do best from forty-five to eighty degrees celsius. There are even a few bacteria and archaea that are called hyperthermophiles which grow best between eighty and one-hundred and twenty one degrees
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simple in structure and markedly different from eukaryote and protist organisms‚ prokaryotic cells are believed to have been amongst the first on the Earth and very well may out-survive all other organisms. Examples of prokaryotes are bacteria and archaea and eukaryotes include fungi‚ animal and plant cells. One of the main differentiating points between the two is the presence or absence of membrane enclosed nuclear body. In prokaryotes‚ it lacks outer membrane covering and nucleolus‚ whereas nucleolus
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