Biology Practice Test (Part 1)

50 Questions | Total Attempts: 84

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Biology Quizzes & Trivia

Questions and Answers
  • 1. 
    Control variables are the aspects that are held constant during all trials of an experiment
    • A. 

      True

    • B. 

      False

  • 2. 
    A scientific theory
    • A. 

      Is a tentative explanation for a natural phenomena

    • B. 

      Is a heredity report

    • C. 

      Is more reliable than a theory

    • D. 

      Will never be changed

    • E. 

      None of the above

  • 3. 
    Alexander Fleming observed a patch of mold that bacteria were not able to grow near.  Which of these was his hypothesis?
    • A. 

      The mold used all of the nutrients so that the bacteria couldn’t grow

    • B. 

      The mold produced a substance that killed nearby bacteria

    • C. 

      The bacteria werer never there to start with

    • D. 

      The mold was dead

    • E. 

      All of the above

  • 4. 
    Controlled variables & control group mean the same thing
    • A. 

      True

    • B. 

      False

  • 5. 
    Which correctly indicates the sequence of increasing organization?
    • A. 

      Molecule, cell, organelle, organ

    • B. 

      Organelle, tissue, cell, organ

    • C. 

      Atom, molecule, tissue, cell

    • D. 

      Organ, tissue, cell, molecule

    • E. 

      Cell, tissue, organ, organ system

  • 6. 
    What is the total magnification if the ocular is at 10X and the objective lens is at 100X
    • A. 

      4X

    • B. 

      40X

    • C. 

      10X

    • D. 

      100X

    • E. 

      1000X

  • 7. 
    You drink a glass of lemonade, but your body’s pH does not change.  This is an example of how organisms
    • A. 

      Maintain homeostasis

    • B. 

      Maintain organization

    • C. 

      Adapt to their environment

    • D. 

      Are immune to acid

    • E. 

      Are what they eat

  • 8. 
    A buffer is a substance that resists the pH change
    • A. 

      True

    • B. 

      False

  • 9. 
    You observe a plant on your windowsill that is growing at an angle toward the outside.  This is an example of a living thing
    • A. 

      Maintaining homeostasis

    • B. 

      Responding to stimuli

    • C. 

      Reproducing

    • D. 

      Evolving

    • E. 

      Regress

  • 10. 
    Which of the following may be found live in the extreme environments, i.e, arctic cold, boiling hot springs, high salt waters
    • A. 

      Members of archaebacteria

    • B. 

      Members of plants

    • C. 

      Members of fungi

    • D. 

      Members of animals

    • E. 

      None of the above

  • 11. 
    A covalent bond is when an atom can become stable by ---- electrons whith another atom
    • A. 

      Transferring

    • B. 

      Sharing

    • C. 

      Hydrophilic

    • D. 

      Hydrophobic

    • E. 

      None of the above

  • 12. 
    You have been hired as a chemist.  Your first task at your new job is to examine a newly discovered atom.  The paperwork you are given states that its atomic number is 110.  What does this mean?
    • A. 

      The atom contains 55 electrons

    • B. 

      The atom contains 50 electrons and 50 neutrons

    • C. 

      The atom contain 110 protons

    • D. 

      All of the above

    • E. 

      None of the above

  • 13. 
    If the concentration H+ exceeds the concentration of OH-, then the solution is
    • A. 

      Acidic

    • B. 

      Basic

    • C. 

      Neutral

    • D. 

      None of the above

    • E. 

      All of the above

  • 14. 
    Which of the following is an example of hydrogen bonding?
    • A. 

      The bond between O and H in a single molecule of water

    • B. 

      The bond between O of one water molecule and H of a second water molecule

    • C. 

      The bond between O of one water molecule and O of a second water molecule

    • D. 

      The bond between H of one water molecule and H of a hydrogen peroxide molecule

    • E. 

      The bone between H of one water molecule and H of a second water molecule

  • 15. 
    Hydrogen usually loses its electron to form a hydrogen ion with a charge of ___.
    • A. 

      Neutral

    • B. 

      Negative

    • C. 

      Fuzzy

    • D. 

      Positive

    • E. 

      Not possible to determine based on the given information

  • 16. 
    The second electron shell is considered to be full when it contains ___ electrons
    • A. 

      1

    • B. 

      2

    • C. 

      8

    • D. 

      10

    • E. 

      6

  • 17. 
    An atom’s nucleus is composed of
    • A. 

      Protons

    • B. 

      Neutrons

    • C. 

      Protons and electrons

    • D. 

      Protons and neutrons

    • E. 

      Neutrons and electrons

  • 18. 
    Polar covalent bonds form when
    • A. 

      Electrons are shared unequally between atoms

    • B. 

      More than one pair of electrons is shared

    • C. 

      Ions are formed

    • D. 

      An acid and base are combined

    • E. 

      Atoms from two molecules are attracted to each other

  • 19. 
    A single covalent chemical bond represents the sharing of how many electrons?
    • A. 

      1

    • B. 

      3

    • C. 

      2

    • D. 

      4

    • E. 

      6

  • 20. 
    Water is important to life because it
    • A. 

      Is universal solvent

    • B. 

      Floats when freezes

    • C. 

      Has high cohesive property

    • D. 

      High adhesive property

    • E. 

      Has all of the above

  • 21. 
    Keratin and silk are examples of _________ while glucose and sucrose are examples of ________.
    • A. 

      Proteins; lipids

    • B. 

      Proteins; carbohydrates

    • C. 

      Carbohydrates; proteins

    • D. 

      Nucleic acids; lipids

    • E. 

      Lipids; carbohydrates

  • 22. 
    Which type of lipid is most important in biological membranes?
    • A. 

      Fats

    • B. 

      Embedded protein channel

    • C. 

      Phospholipids

    • D. 

      Oils

    • E. 

      Triglycerides

  • 23. 
    Testosterone & estrogen are examples of
    • A. 

      Fatty acids

    • B. 

      Proteins

    • C. 

      Steroids

    • D. 

      Hormones

    • E. 

      C & D

  • 24. 
    Fatty acids with more than one carbon-carbon double bond are called polyunsaturated
    • A. 

      True

    • B. 

      False

  • 25. 
    Hydrogen bonds are critical for the maintenance of the secondary structure of a protein?
    • A. 

      True

    • B. 

      False

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