AP Bio Ch 4 Outline Quiz

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AP Biology Quizzes & Trivia

The human body is made of a lot of wonders and we got to cover most of them in chapter four of AP Biology this year. Do you remember what we were able to cover and believe you can tackle the quiz covering the whole chapter? Give it a try and jog your memory.


Questions and Answers
  • 1. 

    Which is NOT true about the cell theory?

    • A.

      Its various parts were described by Schleiden, Schwann, and Virchow.

    • B.

      It states that all organisms are composed of cells.

    • C.

      It states that all cells come from preexisting cells.

    • D.

      It states that bacteria and other small organisms can arise spontaneously.

    • E.

      It is accepted today by biologists as applying to virtually all forms of life.

    Correct Answer
    D. It states that bacteria and other small organisms can arise spontaneously.
    Explanation
    The cell theory does not state that bacteria and other small organisms can arise spontaneously. According to the cell theory, all cells come from preexisting cells, and it is accepted today by biologists as applying to virtually all forms of life. The various parts of the cell theory were described by Schleiden, Schwann, and Virchow.

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  • 2. 

    A high-powered microscope that produces an image from scattered secondary electrons is the

    • A.

      Immunofluorescence microscope.

    • B.

      Bright-field light microscope.

    • C.

      Transmission electron microscope (TEM).

    • D.

      Scanning electron microscope (SEM).

    • E.

      Confocal microscope.

    Correct Answer
    D. Scanning electron microscope (SEM).
    Explanation
    The correct answer is scanning electron microscope (SEM). A scanning electron microscope is a high-powered microscope that uses a beam of electrons to scan the surface of a sample. It produces an image by detecting the scattered secondary electrons. This allows for detailed imaging of the sample's surface, making it useful for examining the topography and composition of materials at a high resolution. Immunofluorescence microscope, bright-field light microscope, transmission electron microscope (TEM), and confocal microscope do not utilize scattered secondary electrons for imaging.

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  • 3. 

    A microscope that uses antibodies that glow to reveal the location of a protein in a cell is the

    • A.

      Immunofluorescence microscope.

    • B.

      Bright-field light microscope.

    • C.

      Transmission electron microscope (TEM).

    • D.

      Scanning electron microscope (SEM).

    • E.

      Confocal microscope

    Correct Answer
    A. Immunofluorescence microscope.
    Explanation
    The correct answer is the immunofluorescence microscope. This type of microscope uses antibodies that are labeled with fluorescent dyes to specifically bind to a target protein in a cell. When the antibodies bind to the protein, they emit fluorescence, allowing the location of the protein to be visualized under the microscope. This technique is commonly used in cell biology and immunology research to study the localization and distribution of proteins within cells.

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  • 4. 

    Which statement is NOT true about bacteria?

    • A.

      Their cell wall is made of a slime layer that is the same as in plant cell walls.

    • B.

      Some are photosynthetic.

    • C.

      Some are chemosynthetic.

    • D.

      They are all prokaryotes.

    • E.

      They have a cell wall that contains peptidoglycan.

    Correct Answer
    A. Their cell wall is made of a slime layer that is the same as in plant cell walls.
    Explanation
    The statement "Their cell wall is made of a slime layer that is the same as in plant cell walls" is not true about bacteria. Bacteria have a cell wall made of peptidoglycan, which is different from the cellulose-based cell walls found in plant cells.

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  • 5. 

    Which is NOT true of eukaryotic cells?

    • A.

      A true nucleus contains the chromosomes.

    • B.

      Eukaryotic cells contain membrane-bounded compartments.

    • C.

      They contain ribosomes that are smaller than those of prokaryotic cells.

    • D.

      They all contain mitochondria.

    • E.

      They contain many organelles in the cytoplasm.

    Correct Answer
    C. They contain ribosomes that are smaller than those of prokaryotic cells.
    Explanation
    Eukaryotic cells contain ribosomes that are larger than those of prokaryotic cells. Ribosomes in eukaryotic cells are generally 80S, while ribosomes in prokaryotic cells are 70S. This is because eukaryotic cells have more complex protein synthesis machinery, requiring larger ribosomes.

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  • 6. 

    Which is NOT a characteristic of chloroplasts?

    • A.

      A chloroplast is surrounded by a double membrane.

    • B.

      Chlorophyll absorbs solar energy that is used to form chemical bonds.

    • C.

      A membrane inside a chloroplast is called a thylakoid.

    • D.

      Stacks called grana are linked by membranous connections.

    • E.

      Chlorophylls are found in the fluid stroma of the chloroplast.

    Correct Answer
    E. Chlorophylls are found in the fluid stroma of the chloroplast.
    Explanation
    Chlorophylls are actually found in the thylakoid membranes of the chloroplast, not in the fluid stroma. The stroma is the fluid-filled space surrounding the thylakoid membranes. It is where the second stage of photosynthesis, known as the Calvin cycle, takes place. The thylakoid membranes, on the other hand, contain the pigments, including chlorophylls, that capture the solar energy needed for photosynthesis.

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  • 7. 

    Actin filaments are

    • A.

      Also known as microtubules.

    • B.

      Able to assemble and disassemble from component proteins.

    • C.

      Found in the center of flagella and cilia.

    • D.

      Intermediate in size between microtubules and microfilaments.

    • E.

      Made of different kinds of components in different tissues.

    Correct Answer
    B. Able to assemble and disassemble from component proteins.
    Explanation
    Actin filaments, also known as microfilaments, are able to assemble and disassemble from component proteins. This property allows them to dynamically change their structure and function in response to cellular needs. Actin filaments play a crucial role in various cellular processes such as cell movement, muscle contraction, and cell division. They are composed of actin proteins that can polymerize to form long filaments or depolymerize to break them down, providing flexibility and adaptability to the cell.

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  • 8. 

    BCells are surrounded by a plasma membrane.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    B cells, also known as B lymphocytes, are a type of white blood cell that plays a crucial role in the immune response. They are surrounded by a plasma membrane, which acts as a barrier and separates the internal contents of the B cell from its external environment. This membrane is made up of a phospholipid bilayer with embedded proteins that help regulate the entry and exit of substances into and out of the cell. Therefore, the statement "B cells are surrounded by a plasma membrane" is true.

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  • 9. 

    A cell is the smallest unit of living matter.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because a cell is indeed the smallest unit of living matter. Cells are the basic building blocks of all living organisms and are responsible for carrying out all the necessary functions of life. They are capable of reproducing themselves and have the ability to perform various specialized functions within multicellular organisms. Without cells, life as we know it would not exist.

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  • 10. 

    All cells have a cell wall that regulates the passage of molecules into and out of the cell.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    This statement is false because not all cells have a cell wall. In fact, only certain types of cells, such as plant cells and bacterial cells, have a cell wall. Animal cells, on the other hand, do not have a cell wall. The cell wall is a rigid structure that provides support and protection to the cell, but it also restricts the passage of molecules. Therefore, it is incorrect to say that all cells have a cell wall.

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  • 11. 

    Explain the endosymbiotic theory and the lines of evidence that support it.

  • 12. 

    BONUSDescribe three major differences between eukaryotic and prokaryotic cells.

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