Biology Chapter 1
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Questions and Answers

What is a primary characteristic of evolution?

  • It is a change in population size.
  • It involves learning new behaviors.
  • It is the genetic change in a species over time. (correct)
  • It occurs only in response to environmental changes.
  • Which sugar component distinguishes RNA from DNA?

  • Glucose
  • Fructose
  • Deoxyribose
  • Ribose (correct)
  • What process is illustrated by boiling an egg?

  • Hydrolysis
  • Condensation
  • Fermentation
  • Denaturation (correct)
  • Which of the following organisms may possess RNA as their only genetic material?

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

    Which of the following is NOT a method of observation in biology?

    <p>Supernatural occurrences</p> Signup and view all the answers

    What is the term for the transmission of characteristics from parent to offspring?

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

    What is the term used to describe the process of using and transforming energy in living organisms?

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

    What do we call the ability of living organisms to maintain stable internal conditions?

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

    What is a group of different tissues that work together in a multicellular organism called?

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

    What term describes all the populations of a particular kind of organism?

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

    What is the proper order for the hierarchy of increasing complexity?

    <p>molecules - organelles - cells - tissues - organs</p> Signup and view all the answers

    What biological process is responsible for much of the diversity among flowering plants and their insect pollinators?

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

    What type of reasoning do scientists use when forming new hypotheses?

    <p>inductive reasoning</p> Signup and view all the answers

    What is the correct sequence of steps in the scientific process?

    <p>observation - hypothesis - predictions - experiment</p> Signup and view all the answers

    What genetic material is all organisms' genetic systems based on?

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

    Which of the following characteristics of water molecules contributes to its high heat of vaporization?

    <p>Water is a polar molecule</p> Signup and view all the answers

    Which kingdom is known for containing photosynthetic organisms that primarily live in aquatic environments?

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

    What is the mass number of an atom defined as?

    <p>The number of protons plus the number of neutrons</p> Signup and view all the answers

    Which kingdom includes organisms that are unable to perform photosynthesis and digest food externally?

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

    How many neutrons are present in an element with an atomic number of 6 and a mass number of 14?

    <p>8</p> Signup and view all the answers

    Which kingdom is characterized by non-photosynthetic organisms that digest their food internally?

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

    Which group comprises the simplest organisms that lack a nucleus?

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

    What are proteins made up of?

    <p>Amino acids held together by peptide bonds</p> Signup and view all the answers

    Which particle is primarily responsible for the chemical behavior of atoms?

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

    What is the term for the region around a nucleus where electrons are likely to be found?

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

    Which level of protein structure determines all other levels?

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

    What are atoms that have a positive or negative charge called?

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

    What are most enzymes classified as?

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

    What type of sugar is found in DNA?

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

    What carbohydrate do plants primarily use for energy storage?

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

    What term describes fatty acids that have the maximum number of hydrogen atoms possible?

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

    Which molecule is a primary component of cell membranes?

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

    Which theory explains that individuals with advantageous traits are more likely to reproduce?

    <p>theory of evolution</p> Signup and view all the answers

    What process proposed by Charles Darwin involves the survival and reproduction of individuals with favorable traits?

    <p>natural selection</p> Signup and view all the answers

    Most elements in nature exist as:

    <p>Mixtures of different isotopes</p> Signup and view all the answers

    When an electron is transferred from one atom to the next, and the two atoms are then electrically attracted to one another, the type of bond is a(n) ____ bond.

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

    What is the name for groups of cells that share a similar structure and function?

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

    The type of bond that forms between two atoms when electrons are shared is a(n) ____ bond.

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

    Weak chemical attractions that form when molecules are very close together are called ____.

    <p>Van der Waals forces</p> Signup and view all the answers

    A solution with a pH of 3 is highly ____.

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

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