Biology Chapter: Properties of Water and Homeostasis
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Questions and Answers

Which property of water is inaccurately described?

  • Water is called a universal solvent, meaning it will dissolve most polar and ionic substances.
  • Water has a high specific heat, meaning it helps maintain constant temperatures.
  • Water has a high surface tension such that a mosquito can sit on the surface of a pond.
  • Water sinks as it freezes, and is most dense as ice. (correct)

    • Which of the following molecules includes nitrogen along with carbon, oxygen, and hydrogen?

  • a monosaccharide such as glucose
  • an alcohol such as ethanol
  • an amino acid such as glycine (correct)
  • a steroid such as testosterone

    • What term describes the ability to maintain a stable internal environment in an organism?

  • Homeostasis (correct)
  • Metabolism
  • Adaptation
  • Evolution

    • What trace element is essential for preventing goiters in humans?

    <p>Iodine</p> Signup and view all the answers

    What best describes the relationship between Carbon 12 and Carbon 14?

    <p>They are isotopes of Carbon with the same number of protons but a different number of neutrons.</p> Signup and view all the answers

    Which statement accurately describes the fatty acid illustrated?

    <p>It has no double bonds in its structure.</p> Signup and view all the answers

    At what level in the ecological hierarchy would a specific group of lions be classified?

    <p>Population</p> Signup and view all the answers

    Which term best describes the highest level of ecological organization?

    <p>Biosphere</p> Signup and view all the answers

    In terms of temperature behavior, how are unsaturated fatty acids generally characterized?

    <p>Liquid at room temperature.</p> Signup and view all the answers

    Which level in the hierarchy includes all living organisms and their physical environment?

    <p>Ecosystem</p> Signup and view all the answers

    What represents the collection of different species living in the tree in your backyard?

    <p>a community</p> Signup and view all the answers

    Which sequence accurately represents the levels of biological organization from simplest to most complex?

    <p>molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem</p> Signup and view all the answers

    When consuming ground beef, what levels of biological organization are primarily represented?

    <p>tissue, organ, and organ system</p> Signup and view all the answers

    Which claim about ecosystems is incorrect?

    <p>The 'web of relationships' within an ecosystem includes the nonliving components of the environment.</p> Signup and view all the answers

    In a scientific experiment, what is the role of a control?

    <p>control</p> Signup and view all the answers

    What characteristic identifies the cells sourced from an organism without distinct organelles?

    <p>Bacteria</p> Signup and view all the answers

    What type of bond holds the hydrogen atoms to the oxygen atom in a water molecule?

    <p>Hydrogen Bond</p> Signup and view all the answers

    Which statement contradicts Darwin's theory of natural selection?

    <p>Individual organisms evolve genetic changes within their lifespan.</p> Signup and view all the answers

    What is the largest level of ecological organization?

    <p>biosphere</p> Signup and view all the answers

    Which of the following statements about polysaccharides is true?

    <p>They are made of monomers called monosaccharides.</p> Signup and view all the answers

    What is the primary component of cell membranes?

    <p>Phospholipids</p> Signup and view all the answers

    Which of the following substances is not classified as a protein?

    <p>Steroids</p> Signup and view all the answers

    Which of these is not considered a true polymer?

    <p>Lipids</p> Signup and view all the answers

    What is the structure shown in the figure above?

    <p>starch molecule</p> Signup and view all the answers

    What is the term used for a change in a protein's three-dimensional shape that causes it to unravel and no longer function properly?

    <p>denaturation</p> Signup and view all the answers

    Based on the amino acid differences in hemoglobin, which conclusion is supported about the new organism?

    <p>it is more closely related to humans than to frogs</p> Signup and view all the answers

    Which description accurately fits the class of molecules known as nucleotides?

    <p>a nitrogenous base, a phosphate group, and a sugar</p> Signup and view all the answers

    Plants store sugars in the form of ________ and animals store sugars in the form of ________.

    <p>starch; glycogen</p> Signup and view all the answers

    What gives rise to the cohesiveness of water molecules?

    <p>hydrogen bonds</p> Signup and view all the answers

    Amino acids have a basic end because they always possess which functional group?

    <p>amino</p> Signup and view all the answers

    Which of the following statements is/are true regarding the chemical reaction illustrated above?

    <p>A and B</p> Signup and view all the answers

    A molecule with a 1:2:1 ratio of Carbon, Hydrogen and Oxygen, such as C6H12O6 is likely a

    <p>carbohydrate</p> Signup and view all the answers

    All of the following statements concerning saturated fats are true except

    <p>They have multiple double bonds in the carbon chains of their fatty acids.</p> Signup and view all the answers

    What term describes all the chemical reactions within an organism that break down and build up molecules?

    <p>Metabolism</p> Signup and view all the answers

    In an experiment measuring how temperature affects seed germination, which factor is the independent variable?

    <p>The temperature</p> Signup and view all the answers

    What is a hypothesis in scientific terms?

    <p>A prediction or educated guess that is testable</p> Signup and view all the answers

    Which macromolecule is known to store and transmit hereditary information?

    <p>Nucleic acids</p> Signup and view all the answers

    What is the relationship between dehydration reactions and hydrolysis?

    <p>Hydrolysis reactions assemble polymers, and dehydration reactions break down polymers.</p> Signup and view all the answers

    Study Notes

    Multiple Choice Questions

    • Water's unique properties allow for life on earth
    • Water is a universal solvent, dissolving polar and ionic substances
    • Water is most dense as a solid (ice)
    • Water has a high surface tension

    Bonus Questions

    • Maintaining constant internal conditions is called homeostasis
    • The trace element lacking in a person with a goiter (enlarged thyroid) is iodine
    • The theme in biology that links organisms to their ancestors is evolution

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    Description

    Test your knowledge on the unique properties of water and essential concepts in biology, including homeostasis and the role of iodine. This quiz covers fundamental topics that are crucial for understanding life processes on Earth. Challenge yourself with multiple choice and bonus questions!

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