Biology Test 2

Last update by Shanal on 10/29/2013
698732 People have viewed this Quiz
  • Share

Microfilaments are well known for their role in which of the following?

Answer:
formation of cleavage furrows, contracting of muscle cells, and ameboid movement

View Biology Test 2 as Flashcard Deck

Related Quiz Content
  • smiraclelynch
    Answered in Biology Test 2
    Which of the following statements about the cytoskeleton is true?
    Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other.
  • smiraclelynch
    Answered in Biology Test 2
    When a potassium ion (K+) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the ion?
    primary cell wall → plasma membrane → cytoplasm → tonoplast
  • smiraclelynch
    Answered in Biology Test 2
    A cell lacking the ability to make and secrete glycoproteins would most likely be deficient in its
    Golgi apparatus and extracellular matrix.
  • smiraclelynch
    Answered in Biology Test 2
    Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells?
    gap junctions
  • smiraclelynch
    Answered in Biology Test 2
    Of the following molecules of the ECM, which is capable of transmitting signals between the ECM and the cytoskeleton?
    integrins
  • smiraclelynch
    Answered in Biology Test 2
    How do isotopes of the same element differ from each other?
    number of neutrons
  • smiraclelynch
    Answered in Biology Test 2
    The atomic number of carbon is 6. Carbon-14 is heavier than carbon-12 because the atomic nucleus of carbon-14 contains _____ neutrons.
    8
  • smiraclelynch
    Answered in Biology Test 2
    From its atomic number of 15, it is possible to predict that the phosphorus atom has
    15 electrons.and 15 protons.
  • smiraclelynch
    Answered in Biology Test 2
    If an atom of sulfur (atomic number 16) were allowed to react with atoms of hydrogen (atomic number 1), which of the molecules below would be formed?

    H-S-H

  • smiraclelynch
    Answered in Biology Test 2
    What results from an unequal sharing of electrons between atoms?
    a polar covalent bond
  • smiraclelynch
    Answered in Biology Test 2
    What is the difference between covalent bonds and ionic bonds?
    Covalent bonds involve the sharing of electrons between atoms, and ionic bonds involve the electrical attraction between atoms.