50 SCIENCE TRIVIA 50 Interesting Science Facts 1 – The speed of light is generally rounded down to 186‚000 miles per second. In exact terms it is 299‚792‚458 m/s (equal to 186‚287.49 miles per second). 2 – It takes 8 minutes 17 seconds for light to travel from the Sun’s surface to the Earth. 3 – 10 percent of all human beings ever born are alive at this very moment. 4 – The Earth spins at 1‚000 mph but it travels through space at an incredible 67‚000 mph. 5 – Every year‚ over one million
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Lab #1 ‐ Introduction to the Microscopy & Observation of Prokaryotic and Eukaryotic Cells Introduction Many of the cells and organisms that you will be studying are at the lower limits of visibility of light microscopes; therefore‚ it is extremely important that you attain critical lighting and focussing. It is also important to handle the microscope competently to avoid damaging either the microscope or the preparation you are studying
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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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Biological Science‚ 4e (Freeman) Chapter 1 Biology and the Tree of Life 1) Which of the following statements about cells is true? A cell is _____. A) only found in multiples of two‚ because single cells cannot exist independently B) always between 200 and 500 micrometers in diameter C) characteristic of eukaryotic but not prokaryotic organisms D) characteristic of both prokaryotic and eukaryotic organisms Answer: D Reference: Section 1.4 Bloom’s Taxonomy: Level 1 Knowledge 2)
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UNIT 1 VIRUSES AND SUBVIRUSES PRE-READING AND READING TASKS 1. Make sure you know the following words: to interfere with ["Intq’fIq] мешать‚ вредить inscrutable [In’skru:tqb(q)l] загадочный‚ непостижимый entity [’entItI] сущность‚ существо‚ организм to overpower ["qVvq’paVq] подавлять machinery [mq’Si:n(q)rI] структура intact [In’txkt] нетронутый‚ неповрежденный‚ целый crucial [’kru:S(q)l] решающий‚ критический to impart [Im’pQ:t] придавать‚ сообщать to promote [prq’mqVt] способствовать‚ помогать
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Factors That Influence the Reproduction of Sea Cucumbers by Angela Mackey (Biol 515 at SDSU‚ Fall 2001) Copyright © 2002 by Angela Mackey and Brian T. Hentschel (hentsche@sunstroke.sdsu.edu) INTRODUCTION The echinoderm class Holothuroidea consists of sea cucumbers‚ which can be described as worm-like organisms with elongated‚ soft bodies. Like most echinoderms‚ holothuroids have 5 rows of tube feet along their bodies. These tube feet aid the animal in attachment‚ locomotion and respiration (Pearse
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1.1. Introduction The study describes and analyses the relationship between the production of waste in animal product processing industries on the one hand and the prevention and treatment of the waste on the other. The industries discussed are slaughterhouses‚ tanneries and the dairy industry. The report offers a summary of the knowledge on production‚ prevention and treatment of waste in these three animal products processing industries. Because of the limited time available for this study‚ the
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Marine National Park in the Gulf of Kutch is situated on the southern shore of the Gulf of Kachchh in the Jamnagar District of Gujarat state‚India. In 1980‚ an area of 270 km2. from Okha to Jodiya was declared Marine Sanctuary. Later‚ in 1982‚ a core area of 110 km2 was declared Marine National Park under the provisions of the Wildlife (protection) Act‚ 1972 of India. It is the first national marine park of India. There are 42 islands on the Jamnagar coast in the Marine National Park‚ most of them
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Tapeworms are the dominant member of the class Cestoidea. They are ribbon-like‚ segmented creatures living in the intestines of their vertebrate hosts. There are a dozen orders in this class‚ most living in fish but two that use humans as hosts. Tapeworms cling to the intestinal wall of their hosts with suckers‚ hooks‚ or other adhesive devices. Having no mouth or gut‚ they receive their nourishment through their skin. Further‚ they have no type of sensory organs. White or yellowish in color‚ species
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Chapter 25: Environmental Microbiology Question Type: Multiple Choice 1) Which would not be the habitat for terrestrial species of some microorganisms? a) desert b) tundra c) tropical rain forest d) freshwater lake Answer: d Difficulty: Easy Learning Objective 1: LO 25.1 Explain the concept of ecosystems and how energy flows through them. Section Reference 1: Section 25.1 Fundamentals of Ecology 2. Microbes in the environment can be _____. a) producers b) consumers c) decomposers d) all
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